Honda 2001 Restraints23-1
SRS23-14 		Previous Page Next Page


SRS23-14

Component Location Index

LHD:


1

SRS INDICATOR

Troubleschooting, page 23-124


7

RIGHT SIDE SEAT BELT TENSIONER

Replacement, page 23-4 Disposal, page 23-138

2

CABLE REEL

Replacement, page 23-141


8

FRONT PASSENGER'S SIDE IMPACT SENSOR

Replacement, page 23-145

3

FRONT PASSENGER'S AIRBAG

Replacement, page 23-136 Disposal, page 23-138


9

LEFT SIDE SEAT BELT TENSIONER

Replacement, page 23-4 Disposal, page 23-138

4

DRIVER'S AIRBAG

Replacement, page 23-135 Disposal, page 23-138


10

DRIVER'S SIDE IMPACT SENSOR

Replacement, page 23-145

5

SRS UNIT

Replacement, page 23-144


11

DRIVER'S SIDE AIRBAG

Replacement, page 23-137 Disposal, page 23-138

6

FRONT PASSENGER'S SIDE AIRBAG

Replacement, page 23-137 Disposal, page 23-138


 




23-15

RHD


1

SRS INDICATOR

Troubleschooting, page 23-124

 

8

RIGHT SIDE SEAT BELT TENSIONER

Replacement, page 23-4 Disposal, page 23-138

2

FRONT PASSENGER'S AIRBAG

Replacement, page 23-136 Disposal, page 23-138

 

9

OPDS UNIT (KU)

Initialization, page 23-30 Replacement, page 23-146

3

CABLE REEL

Replacement, page 23-141

 

10

FRONT PASSENGER'S SIDE IMPACT SENSOR

Replacement, page 23-145

4

DRIVER'S AIRBAG

Replacement, page 23-135 Disposal, page 23-138

 

11

LEFT SIDE SEAT BELT TENSIONER

Replacement, page 23-4 Disposal, page 23-138

5

SRS UNIT

Replacement, page 23-144

 

12

OPDS SENSOR/SEAT BACK (KU)

Replacement, page 20-110

6

DRIVER'S SIDE AIRBAG

Replacement, page 23-137 Disposal, page 23-138

 

13

FRONT PASSENGER'S SIDE AIRBAG

Replacement, page 23-137 Disposal, page 23-138

7

DRIVER'S SIDE IMPACT SENSOR

Replacement, page 23-145

 

 




Precautions and Procedures23-16

General Precautions

Please read the following precautions carefully before performing airbag system service. Observe the instructions described in this manual, or the airbags could accidentally deploy and cause damage or injuries.

  • Except when performing electrical inspections, always turn the ignition switch OFF, disconnect the negative cable from the battery, and wait at least 3 minutes before beginning work.
    NOTE: The memory is not erased even if the ignition switch is turned OFF or the battery cables are disconnected from the battery.
  • Use replacement parts which are manufactured to the same standards and quality as the original parts. Do not install used SRS parts from another vehicle. Use only new parts when making SRS repairs.
  • Carefully inspect any SRS part before you install it.
    Do not install any part that shows signs of being dropped or improperly handled, such as dents, cracks or deformation.


  • Before removing any SRS parts (including the disconnection of connectors), always disconnect the SRS connector.
  • Use only a digital multimeter to check the system. If it is not a Honda multimeter, make sure its output is 10 mA (0.01 A) or less when switched to the lowest value in the ohmmeter range. A tester with a higher output could cause accidental deployment and possible injury.
  • Do not put objects on the front passenger's airbag.

    • Steering-related Precautions

    Cable Reel Alignment
  • Misalignment of the cable reel could cause an open in the wiring, making the SRS system and the horns inoperative. Center the cable reel whenever the following is performed (see step 6 on page 23-143 ).
  • Installation of the steering wheel
  • Installation of the cable reel
  • Installation of the steering column
  • Other steering-related adjustment or installation
  • Do not disassemble the cable reel.
  • Do not apply grease to the cable reel.
  • If the cable reel shows any signs of damage, replace it with a new one. For example, it does not rotate smoothly.

    • 23-17

    Airbag Handling and Storage

    Do not disassemble an airbag. It has no serviceable parts. Once an airbag has been deployed, it cannot be repaired or reused.

    For temporary storage of airbag during service, observe the following precautions.

  • Store the removed airbag with the pad surface up. Never put anything on the airbag.


  • To prevent damage to the airbag assembly, keep free from any oil, grease, detergent, or water.


  • Store the removed airbag on a secure, flat surface away from any high heat source (exceeding 200°F/93°C).


  • Never perform electrical inspections to the airbags, such as measuring resistance.
  • Do not position yourself in front of the airbag assembly during removal, inspection, or replacement.


  • Refer to the scrapping procedures for disposal of a damaged airbag.

    • Precautions and Procedures (cont'd)23-18

    SRS Unit, Front Sensors and Side Impact Sensors

  • Be careful not to bump or impact the SRS unit, front sensors, or the side impact sensors whenever the ignition switch is ON (II), or for at least 3 minutes after the ignition switch is turned OFF.
  • During installation or replacement, be careful not to bump (by impact wrench, hammer, etc.) the area around the SRS unit, front sensors, and the side impact sensor. The airbags could accidentally deploy and cause damage or injury.


  • After a collision in which any airbags or seat belt tensioners were deployed, replace the SRS unit, front sensors, and other related components (see page 23-134) . After a collision in which a side airbag was deployed, replace the side impact sensor on the deployed side and the SRS unit. After a collision in which the airbags or the side airbags did not deploy, inspect for any damage or any deformation on the SRS unit, front sensors, and the side impact sensors. If there is any damage, replace the SRS unit and/or the side impact sensors.


  • Do not disassemble the SRS unit or the side impact sensors.
  • Turn the ignition switch OFF, disconnect the battery negative cable, and wait at least 3 minutes before beginning installation or replacement of the SRS unit, or disconnecting the connectors from the SRS unit.
  • Be sure the SRS unit and side impact sensors are installed securely, with the mounting bolts torqued to 9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)
  • Do not spill water or oil on the SRS unit or the side impact sensors, and keep them away from dust.
  • Store the SRS unit and the side impact sensors in a cool (less than 104°F/40°C) and dry (less than 80 % relative humidity, no moisture) area.

    • 23-19

    Wiring Precautions

    Some of the SRS wiring can be identified by special yellow outer covering, and the SRS connectors can be identified by their yellow color.
    Observe the instructions described in this section.

  • Never attempt to modify, splice, or repair SRS wiring.
    If there is an open or damage in SRS wiring, replace the harness.


  • Be sure to install the harness wires so they do not get pinched or interfere with other parts.


  • Make sure all SRS ground locations are clean, and grounds are securely fastened for optimum metal-to-metal contact. Poor grounding can cause intermittent problems that are difficult to diagnose.

    • Precautions for Electrical Inspections

  • When using electrical test equipment, insert the probe of the tester into the wire side of the connector. Do not insert the probe of the tester into the terminal side of the connector, and do not tamper with the connector.


  • Use a U-shaped probe. Do not insert the probe forcibly.


  • Use specified service connectors in troubleshooting.
    Using improper tools could cause an error in inspection due to poor metal-to-metal contact.

    • Precautions and Procedures (cont'd)23-20

    Spring-loaded Lock Connector

    Some SRS system connectors have a spring-loaded lock.

    Front Airbag Connectors:
    Disconnecting

    To release the lock, pull the spring-loaded sleeve (A) toward the stop (B) while holding the opposite half of the connector. Then pull the connector halves apart. Be sure to pull on the sleeve and not on the connector.


    Connecting
    1. To reconnect, hold the pawl-side connector, and press on the back of the sleeve-side connector in the direction shown. As the two connector halves are pressed together, the sleeve (A) is pushed back by the pawl (C). Do not touch the sleeve.


    2. When the connector halves are completely connected, the pawl is released, and the spring-loaded sleeve locks the connector.


    Side Airbag Connector:
    Disconnecting

    To release the lock, pull the spring-loaded sleeve (A) and the slider (B) while holding the opposite half of the connector. Then pull the connector halves apart. Be sure to pull on the sleeve and not on the connector half.


    Connecting

    Hold both connector halves, and press them firmly together until the projection (C) of the sleeve-side connector clicks.


    23-21

    Backprobing Spring-loaded Lock Connectors

    When checking voltage or resistance on this type of connector the first time, you must remove the retainer to insert the tester probe from the wire side.

    NOTE: It is not necessary to reinstall the removed retainer; the terminals will stay locked in the connector housing.


    To remove the retainer (A), insert a flat-tip screwdriver (B) between the connector body and the retainer, then carefully pry out the retainer. Take care not to break the connector.


    Seats with Side Airbags

    Seats with side airbags have a ''SIDE AIRBAG'' label on the seat-back. Because the component parts (seat-back cover, cushion, etc.) of seats with and without airbags are different, make sure you install only the correct replacement parts.


  • When cleaning, do not saturate the seat with liquid, and do not spray steam on the seat.
  • Do not repair a torn or frayed seat-back cover. Replace the seat-back cover.
  • After a collision in which the side airbag was deployed, replace the side airbag with new parts. If the seat-back cushion is split, it must be replaced. If the seat-back frame is deformed, it must be replaced.
  • Never put aftermarket accessories on the seat (covers, pads, seat heaters, lights, etc.).

    • Precautions and Procedures (cont'd)23-22

    Disconnecting the Airbag Connectors, Side Airbag Connectors, Seat Belt Buckle Tensioner Connectors and Seat Belt Tensioner Connectors

    Before removing a front airbag, side airbag or other SRS related devices (the SRS unit, the cable reel, the side impact sensors, the seat belt buckle tensioners and the seat belt tensioner connector), disconnecting connectors from related devices, or removing the dashboard or the steering column, disconnect the airbag connectors or the side airbag connectors to prevent accidental deployment.
    Turn the ignition switch OFF and disconnect the negative cable from the battery, and wait at least 3 minutes before beginning the following procedures.

  • Before disconnecting the dashboard wire harness B 18P connector (A) from the SRS unit, disconnect the driver's airbag 2P connector (C), the front passenger's airbag 2P connector (D), the left side seat belt tensioner 2P connector (F), and the right side seat belt tensioner 2P connector (G).
  • Before disconnecting the floor wire harness 18P connector (I) from the SRS unit, disconnect both side airbag 2P connectors (J, K) and both seat belt buckle tensioner 4P connector (L, M).
  • Before disconnecting the cable reel 4P connector (B), disconnect the driver's airbag 2P connector (C).
  • Before disconnecting the floor wire harness 4P connector (E), disconnect both seat belt tensioner 2P connectors (F, G).


    • 23-23

    1. Disconnect the negative battery cable, and wait at least 3 minutes.
    Driver's Airbag
    1. Remove the access panel (A) from the steering wheel, then disconnect the driver's airbag 2P connector (1) from the cable reel 2P connector (2).


    Front Passenger's Airbag
    1. Remove the access panel (A), then disconnect the front passenger's airbag 2P connector (1) from the dashboard wire harness B 2P connector (2).


    Side Airbag
    1. Disconnect both side airbag 2P connectors (1) from the floor wire harness 2P connectors (2).


    Precautions and Procedures (cont'd)23-24

    Seat Belt Tensioner
    1. Disconnect both seat belt tensioner 2P connectors (1) from the floor wire harness 2P connector (2).


    Seat Belt Buckle Tensioner
    1. Disconnect both seat belt buckle tensioner 4P connectors (1).


    General Troubleshooting Information23-25

    DTC (Diagnostic Trouble Codes)

    The self-diagnostic function of the SRS system allows it to locate the causes of system problems and then store this information in memory. For easier troubleshooting, this data can be retrieved via a data link circuit.

  • When you turn the ignition switch ON (II), the SRS indicator will come on. If it goes off after 6 seconds, the system is normal.
  • If there is an abnormality, the system locates and defines the problem, stores this information in memory, and turns the SRS indicator on. The data will remain in the memory even when the ignition switch is turned off or if the battery is disconnected.
  • When you connect the Honda PGM Tester to the 16P data link connector (DLC) to short the SCS terminal, and turn the ignition switch ON (II), the SRS indicator will indicate the diagnostic trouble code (DTC) by the number of blinks.
  • After reading and recording the DTC, proceed with the troubleshooting procedure for this code.
    • Precautions
  • Use only a digital multimeter to check the system. If it's not a Honda multimeter, make sure it's output is 10 mA (0.01A) or less when switched to the smallest value in the ohmmeter range. A tester with a higher output could damage the airbag circuit or cause accidental airbag deployment and possible injury.
  • Whenever the ignition switch is ON (II), or has been turned OFF for less than 3 minutes, be careful not to bump the SRS unit; the airbags could accidentally deploy and cause damage or injuries.
  • Before you remove the SRS main harness, disconnect the driver's airbag connector, the front passenger's airbag connector, both side airbag connectors, both seat belt buckle tensioner connectors, and both seat belt tensioner connectors.
  • Make sure the battery is sufficiently charged. If the battery is dead or low, measuring values won't be correct.
  • Do not touch a tester probe to the terminals in the SRS unit or harness connectors, and do not connect the terminals with a jumper wire. Use only the backprobe set and the Honda PGM Tester. Backprobe spring-loaded lock type connectors correctly.

    • Reading the DTC

    When the SRS indicator is on, read the DTC using either of the following methods:

    PGM Tester ''SRS'' Menu Method

    Connect the Honda PGM Tester (A) to the 16P Data Link Connector (DLC)(1), and follow the Tester's prompts in the

    ''SRS'' menu. If the Tester indicates no DTC, DTC 3-6 to 3-10, DTC 4-6 to 4-10, DTC 9-1, or DTC 9-2, double-check by selecting ''SCS'' on the display, and watching the SRS indicator.


    General Troubleshooting Information (cont'd)23-26

    ''SCS'' Menu Method (retrieving the flash codes):

    The SRS indicator (A) indicates the DTC by the number of blinks when the DTC pin box (B) is connected to the Data Link Connector (DLC)16P (1).

    1. Make sure the ignition switch is OFF, and wait for 10 seconds. Then connect the DLC pin box (A) to the Data Link Connector (DLC) 16P. If you don't wait 10 seconds, the SRS unit won't be completely reset or output DTCs.


    2. Connect the DLC pin box terminals No. 4 and No. 9 with a jumper wire (C), and push the operation switch.
    3. Turn the ignition switch ON (II). The SRS indicator comes on for about 6 seconds, and then goes off. Then it will indicate the DTC.
    4. Read the DTC.
    5. Turn the ignition switch OFF, and wait for 10 seconds. Then disconnect the DLC pin box from the Data Link Connector (DLC) 16P.
    6. Proceed with the troubleshooting procedure for this DTC.
    Patterns of DTC Indications:


    Reading the main code:


    Reading the sub code:


    23-27

  • Including the most recent problem, up to three different DTCs can be indicated (see example 1 below).
  • In case of a continuous failure, the DTC will be indicated repeatedly (see example 1 below).
  • In case of an intermittent failure, the SRS indicator will indicate the DTCs one time, then it will stay on (see example 2 below).
  • If both a continuous and an intermittent failure occur, both DTCs will be indicated as continuous failures.
  • When the system is normal (no DTCs), the SRS indicator will stay on (see example 3).
  • If the SRS indicator comes on continuously without a DTC, there may be a problem with the system.
  • If the SRS indicator does not come on as indicated above, always check for an open or a short to ground in the SCS circuit before troubleshooting the system.
    • Example of DTC Indications:


    General Troubleshooting Information (cont'd)23-28

    Reading the SRS Indicator Method (with service check connector (2P) models):

    The SRS indicator indicates the DTC by the number of blinks when the SCS short connector is connected to the service check connector (2P).

    1. Make sure the ignition switch is OFF, and wait for 10 seconds. Then connect the SCS short connector (A) to the service check connector (2P) (B). If you don't wait 10 seconds, the SRS unit won't be completely reset or output DTCs.


    2. Turn the ignition switch ON (II). The SRS indicator comes on for about 6 seconds, and then goes off. Then it will indicate the DTC.
    3. Read the DTC.
    4. Turn the ignition switch OFF, and wait for 10 seconds. Then disconnect the SCS short connector from the service check connector (2P).

    23-29

    Erasing the DTC Memory

    Special Tools Required

    SCS short connector 07PAZ-0010100

    To erase the DTC(s) from the SRS unit, use a Honda PGM Tester (see the Honda PGM Tester SRS vehicle System Supplement) or the following procedure.

    1. Make sure the ignition switch is OFF.
    2. Connect the SCS short connector (A) to the MES connector (2P) (1). Do not use a jumper wire.


    3. Turn the ignition switch ON (II).
    4. The SRS indicator will come on for about 6 seconds, and then go off. Remove the SCS short connector from the MES connector (2P) within 4 seconds after the indicator goes off.
    5. The SRS indicator will come on again. Reconnect the SCS short connector to the MES connector (2P) within 4 seconds after the indicator comes on.
    6. When the SRS indicator goes off, remove the SCS short connector from the MES connector (2P) within 4 seconds.
    7. The SRS indicator will blink two times indicating that the memory has been erased.
    8. Turn the ignition switch OFF, and wait for 10 seconds.
    9. Turn the ignition switch ON (II) again. The SRS is OK if the SRS indicator comes on for 6 seconds and then goes off.

    Troubleshooting Intermittent Failures

    If there was a malfunction, but it doesn't recur, it will be stored in the memory as an intermittent failure, and the SRS indicator will come on.

    After checking the DTC, troubleshoot as follows:

    1. Read the DTC (see "Reading the DTC" ).
    2. Erase the DTC memory (see "Erasing the DTC Memory" ).
    3. With the shift lever in Park or neutral, start the engine, and let it idle.
    4. The SRS indicator will come on for about 6 seconds and then go off.
    5. Shake the wire harness and the connectors, take a test drive (quick acceleration, quick braking, cornering), turn the steering wheel fully left and right, and hold it there for 5 to 10 seconds. If the problem recurs, the SRS indicator will come on.
    6. If you can't duplicate the intermittent failure, the system is OK at this time.

    General Troubleshooting Information (cont'd)23-30

    Initializing the OPDS (Occupant Position Detection System) Unit

    Special Tools Required

    SCS short connector 07PAZ-0010100

    DLC pin box 07WAJ-0010100

    When a seat-back cover, seat-back cushion, and/or OPDS unit is replaced, initialize the OPDS by following the procedure below.

    NOTE: Make sure the passenger's seat is dry. Set the seat-back in the normal position, and make sure there is nothing on the front passenger's seat.

    1. Make sure the ignition switch is OFF.
    2. Connect a DLC pin box (A) to the DLC (16P) (1), and connect the DLC pin box terminals No.4 and No.9 with a jumper wire (B), and push the operation switch.
    3. Connect the SCS short connector (C) to the MES connector (2P) (2). Do not use a jumper wire.


    4. Turn the ignition switch ON (II).
    5. The SRS indicator (D) comes on for about 6 seconds and goes off. Remove the SCS short connector from the MES connector within 4 seconds after the SRS indicator went off.
    6. The SRS indicator comes on again. Reconnect the SCS short connector to the MES connector within 4 seconds after the SRS indicator comes on.
    7. The SRS indicator goes off. Remove the SCS short connector from the MES connector within 4 seconds.
    8. Watch the SRS indicator.
    9. If the indicator blinks two times and then stays on, the OPDS is initialized, but the DTCs need to be erased. Go to step 9, then erase the DTCs.
    10. If the indicator blinks two times and then goes off, the OPDS unit is initialized. Go to step 9.
    11. If the indicator stays on without first blinking, the OPDS is not initialized. Read the DTC, and go to the appropriate page in the DTC Troubleshooting Index.
    12. Turn the ignition switch off, and disconnect the DLC pin box from the DLC (16P).


    DTC Troubleshooting Index23-31

    Without Side Airbag and Seat belt buckle tensioner Model(DENSO)

    DTC

    Detection Item

    Notes

    1-1
    		Open in driver's airbag inflator (see page 23-45)
    1-2
    		Increased resistance in driver's airbag inflator (see page 23-45)
    1-3
    		Short to another wire or decreased resistance in driver's airbag inflator (see page 23-48)
    1-4
    		Short to power in driver's airbag inflator (see page 23-50)
    1-5
    		Short to ground in driver's airbag inflator (see page 23-52)
    2-1
    		Open in front passenger's airbag inflator (see page 23-54)
    2-2
    		Increased resistance in front passenger's airbag inflator (see page 23-54)
    2-3
    		Short to another wire or decreased resistance in front passenger's airbag inflator (see page 23-55)
    2-4
    		Short to power in front passenger's airbag inflator (see page 23-57)
    2-5
    		Short to ground in front passenger's airbag inflator (see page 23-58)
    3-1
    		Open in left side seat belt tensioner (see page 23-60)
    3-2
    		Increased resistance in left side seat belt tensioner (see page 23-60)
    3-3
    		Short to another wire or decreased resistance in left side seat belt tensioner (see page 23-62)
    3-4
    		Short to power in left side seat belt tensioner (see page 23-64)
    3-5
    		Short to ground in left side seat belt tensioner (see page 23-66)
    4-1
    		Open in right side seat belt tensioner (see page 23-74)
    4-2
    		Increased resistance in right side seat belt tensioner (see page 23-74)
    4-3
    		Short to another wire or decreased resistance in right side seat belt tensioner (see page 23-76)
    4-4
    		Short to power in right side seat belt tensioner (see page 23-78)
    4-5
    		Short to ground in right side seat belt tensioner (see page 23-80)
    5-1 Internal failure of SRS unit NOTE: Before troubleshooting DTCs 5-1 through 8-6, check battery/system voltage. If the voltage is low, repair the charging system before troubleshooting the SRS. (see page 23-88)
    5-2
    5-4
    6-4
    7-1
    7-2
    7-3
    8-1
    8-2
    8-3
    8-4
    8-5
    8-6
    9-1
    		Internal failure of the SRS unit. If intermittent, could mean internal failure of the unit or a faulty indicator circuit. Refer to Troubleshooting Intermittent Failures (see page 23-29) . (see page 23-88)
    9-2
    		Internal failure of the SRS unit. If intermittent, could mean internal failure of the power supply (VB line). Refer to Troubleshooting Intermittent Failures (see page 23-29) .
    9-6
    		Faulty left front sensor (see page 23-90)
    9-7
    		Faulty right front sensor (see page 23-93)




    DTC Troubleshooting Index (cont'd)23-32

    With Seat belt buckle tensioner, without Side Airbag Model (DENSO)

    DTC

    Detection Item

    Notes

    1-1
    		Open in driver's airbag inflator (see page 23-45)
    1-2
    		Increased resistance in driver's airbag inflator (see page 23-45)
    1-3
    		Short to another wire or decreased resistance in driver's airbag inflator (see page 23-48)
    1-4
    		Short to power in driver's airbag inflator (see page 23-50)
    1-5
    		Short to ground in driver's airbag inflator (see page 23-52)
    2-1
    		Open in front passenger's airbag inflator (see page 23-54)
    2-2
    		Increased resistance in front passenger's airbag inflator (see page 23-54)
    2-3
    		Short to another wire or decreased resistance in front passenger's airbag inflator (see page 23-55)
    2-4
    		Short to power in front passenger's airbag inflator (see page 23-57)
    2-5
    		Short to ground in front passenger's airbag inflator (see page 23-58)
    3-1
    		Open in left side seat belt tensioner (see page 23-60)
    3-2
    		Increased resistance in left side seat belt tensioner (see page 23-60)
    3-3
    		Short to another wire or decreased resistance in left side seat belt tensioner (see page 23-62)
    3-4
    		Short to power in left side seat belt tensioner (see page 23-64)
    3-5
    		Short to ground in left side seat belt tensioner (see page 23-66)
    21-1
    		Open in left side seat belt buckle tensioner (see page 23-68)
    21-2
    		Increased resistance in left side seat belt buckle tensioner (see page 23-68)
    21-3
    		Short to another wire or decreased resistance in left side seat belt buckle tensioner (see page 23-69)
    21-4
    		Short to power in left side seat belt buckle tensioner (see page 23-71)
    21-5
    		Short to ground in left side seat belt buckle tensioner (see page 23-72)
    4-1
    		Open in right side seat belt tensioner (see page 23-74)
    4-2
    		Increased resistance in right side seat belt tensioner (see page 23-74)
    4-3
    		Short to another wire or decreased resistance in right side seat belt tensioner (see page 23-76)
    4-4
    		Short to power in right side seat belt tensioner (see page 23-78)
    4-5
    		Short to ground in right side seat belt tensioner (see page 23-80)
    22-1
    		Open in right side seat belt buckle tensioner (see page 23-82)
    22-2
    		Increased resistance in right side seat belt buckle tensioner (see page 23-82)
    22-3
    		Short to another wire or decreased resistance in right side seat belt buckle tensioner (see page 23-83)
    22-4
    		Short to power in right side seat belt buckle tensioner (see page 23-85)
    22-5
    		Short to ground in right side seat belt buckle tensioner (see page 23-86)




    23-33

    DTC

    Detection Item

    Notes

    5-1 Internal failure of SRS unit NOTE: Before troubleshooting DTCs 5-1 through 8-6, check battery/system voltage. If the voltage is low, repair the charging system before troubleshooting the SRS. (see page 23-88)
    5-2
    5-4
    6-4
    7-1
    7-2
    7-3
    8-1
    8-2
    8-3
    8-4
    8-5
    8-6
    9-1 Internal failure of the SRS unit. If intermittent, could mean internal failure of the unit or a faulty indicator circuit. Refer to Troubleshooting Intermittent Failures (see page 23-29) . (see page 23-88)
    9-2 Internal failure of the SRS unit. If intermittent, could mean internal failure of the power supply (VB line). Refer to Troubleshooting Intermittent Failures (see page 23-29) .
    9-6 Faulty left front sensor (see page 23-90)
    9-7 Faulty right front sensor (see page 23-93)




    DTC Troubleshooting Index (cont'd)23-34

    With Seat belt buckle tensioner and Side Airbag, without OPDS Unit Model (KEIHIN, SIEMENS)

    DTC

    Detection Item

    Notes

    1-1
    		Open or increased resistance in driver's airbag inflator (see page 23-45)
    1-3 Short to another wire or decreased resistance in driver's airbag inflator (see page 23-48)
    1-4 Short to power in driver's airbag inflator (see page 23-50)
    1-5 Short to ground in driver's airbag inflator (see page 23-52)
    2-1 Open or increased resistance in front passenger's airbag inflator (see page 23-54)
    2-3 Short to another wire or decreased resistance in front passenger's airbag inflator (see page 23-55)
    2-4 Short to power in front passenger's airbag inflator (see page 23-57)
    2-5 Short to ground in front passenger's airbag inflator (see page 23-58)
    3-1 Open or increased resistance in left side seat belt tensioner (see page 23-60)
    3-3 Short to another wire or decreased resistance in left side seat belt tensioner (see page 23-62)
    3-4 Short to power in left side seat belt tensioner (see page 23-64)
    3-5 Short to ground in left side seat belt tensioner (see page 23-66)
    21-1 Open or increased resistance in left side seat belt buckle tensioner (see page 23-68)
    21-3 Short to another wire or decreased resistance in left side seat belt buckle tensioner (see page 23-69)
    21-4 Short to power in left side seat belt buckle tensioner (see page 23-71)
    21-5 Short to ground in left side seat belt buckle tensioner (see page 23-72)
    4-1 Open or increased resistance in right side seat belt tensioner (see page 23-74)
    4-3 Short to another wire or decreased resistance in right side seat belt tensioner (see page 23-76)
    4-4 Short to power in right side seat belt tensioner (see page 23-78)
    4-5 Short to ground in right side seat belt tensioner (see page 23-80)
    22-1 Open or increased resistance in right side seat belt buckle tensioner (see page 23-82)
    22-3 Short to another wire or decreased resistance in right side seat belt buckle tensioner (see page 23-83)
    22-4 Short to power in right side seat belt buckle tensioner (see page 23-85)
    22-5 Short to ground in right side seat belt buckle tensioner (see page 23-86)
    5-1 Internal failure of SRS unit NOTE: Before troubleshooting DTCs 5-1 through 8-6, check battery/system voltage. If the voltage is low, repair the charging system before troubleshooting the SRS. (see page 23-88)
    5-2
    5-4
    5-8
    6-3
    6-4
    6-7
    6-8
    7-1
    7-2
    7-3
    8-1
    8-2
    8-3
    8-4
    8-5
    8-6




    23-35

    DTC

    Detection Item

    Notes

    9-1 Internal failure of the SRS unit. If intermittent, could mean internal failure of the unit or a faulty indicator circuit. Refer to Troubleshooting Intermittent Failures (see page 23-29) . (see page 23-88)
    9-2 Internal failure of the SRS unit. If intermittent, could mean internal failure of the power supply (VB line). Refer to Troubleshooting Intermittent Failures (see page 23-29) .
    9-6 Faulty left front sensor (see page 23-90)
    9-7 Faulty right front sensor (see page 23-93)
    10-1 Seat belt tensioners (and airbag(s)) deployed (see page 23-88)
    10-2 Left side airbag deployed
    10-3 Seat belt tensioners (and airbag(s)) and left side airbag deployed
    10-4 Right side airbag deployed
    10-5 Seat belt tensioners (and airbag(s)) and front right side airbag deployed
    10-6 Side airbags deployed
    10-7 Seat belt tensioners (and airbag(s)) and side airbags deployed
    11-1 Open or increased resistance in left side airbag inflator (see page 23-102)
    11-3 Short to another wire or decreased resistance in left side airbag inflator (see page 23-103)
    11-4 Short to power in left side airbag inflator (see page 23-105)
    11-5 Short to ground in left side airbag inflator (see page 23-106)
    12-1 Open or increased resistance in right side airbag inflator (see page 23-96)
    12-3 Short to another wire or decreased resistance in right side airbag inflator (see page 23-97)
    12-4 Short to power in right side airbag inflator (see page 23-99)
    12-5 Short to ground in right side airbag inflator (see page 23-100)
    13-1 Internal failure of the left side impact sensor (see page 23-89)
    13-2
    13-3 No signal from the left side impact sensor (see page 23-111)
    13-4 Faulty power supply to the left side impact sensor (see page 23-112)
    14-1 Internal failure of the right side impact sensor (see page 23-89)
    14-2
    14-3 No signal from the right side impact sensor (see page 23-108)
    14-4 Faulty power supply to the right side impact sensor (see page 23-109)




    DTC Troubleshooting Index (cont'd)23-36

    Side Airbag with OPDS Unit Model (KEIHIN)

    DTC

    Detection Item

    Notes

    1-1 Open or increased resistance in driver's airbag inflator (see page 23-45)
    1-3 Short to another wire or decreased resistance in driver's airbag inflator (see page 23-48)
    1-4 Short to power in driver's airbag inflator (see page 23-50)
    1-5 Short to ground in driver's airbag inflator (see page 23-52)
    2-1 Open or increased resistance in front passenger's airbag inflator (see page 23-54)
    2-3 Short to another wire or decreased resistance in front passenger's airbag inflator (see page 23-55)
    2-4 Short to power in front passenger's airbag inflator (see page 23-57)
    2-5 Short to ground in front passenger's airbag inflator (see page 23-58)
    3-1 Open or increased resistance in left side seat belt tensioner (see page 23-60)
    3-3 Short to another wire or decreased resistance in left side seat belt tensioner (see page 23-62)
    3-4 Short to power in left side seat belt tensioner (see page 23-64)
    3-5 Short to ground in left side seat belt tensioner (see page 23-66)
    4-1 Open or increased resistance in right side seat belt tensioner (see page 23-74)
    4-3 Short to another wire or decreased resistance in right side seat belt tensioner (see page 23-76)
    4-4 Short to power in right side seat belt tensioner (see page 23-78)
    4-5 Short to ground in right side seat belt tensioner (see page 23-80)
    5-1 Internal failure of SRS unit
    NOTE: Before troubleshooting DTCs 5-1 through 8-6, check battery/system voltage. If the voltage is low, repair the charging system before troubleshooting the SRS.     		(see page 23-88)
    5-2
    5-4
    5-8
    6-3
    6-4
    6-7
    6-8
    7-1
    7-2
    7-3
    8-1
    8-2
    8-3
    8-4
    8-5
    8-6




    23-37

    DTC

    Detection Item

    Notes

    9-1 Internal failure of the SRS unit. If intermittent, could mean internal failure of the unit or a faulty indicator circuit. Refer to Troubleshooting Intermittent Failures (see page 23-29) . (see page 23-88)
    9-2 Internal failure of the SRS unit. If intermittent, could mean internal failure of the power supply (VB line). Refer to Troubleshooting Intermittent Failures (see page 23-29) .
    9-6 Faulty left front sensor (see page 23-90)
    9-7 Faulty right front sensor (see page 23-93)
    10-1 Seat belt tensioners (and airbag(s)) deployed (see page 23-88)
    10-2 Driver's side airbag deployed
    10-3 Seat belt tensioners (and airbag(s)) and driver's side airbag deployed
    10-4 Front passenger's side airbag deployed
    10-5 Seat belt tensioners (and airbag(s)) and front passenger's side airbag deployed
    10-6 Driver's and front passenger's side airbags deployed
    10-7 Seat belt tensioners (and airbag(s)) and driver's and front passenger's side airbags deployed
    11-1 Open or increased resistance in driver's side airbag inflator (see page 23-96)
    11-3 Short to another wire or decreased resistance in driver's side airbag inflator (see page 23-97)
    11-4 Short to power in driver's side airbag inflator (see page 23-99)
    11-5 Short to ground in driver's side airbag inflator (see page 23-100)
    12-1 Open or increased resistance in front passenger's side airbag inflator (see page 23-102)
    12-3 Short to another wire or decreased resistance in front passenger's side airbag inflator (see page 23-103)
    12-4 Short to power in front passenger's side airbag inflator (see page 23-105)
    12-5 Short to ground in front passenger's side airbag inflator (see page 23-106)
    13-1 Internal failure of the driver's side impact sensor (see page 23-89)
    13-2
    13-3 No signal from the driver's side impact sensor (see page 23-108)
    13-4 Faulty power supply to the driver's side impact sensor (see page 23-109)
    14-1 Internal failure of the front passenger's side impact sensor (see page 23-89)
    14-2
    14-3 No signal from the front passenger's side impact sensor (see page 23-111)
    14-4 Faulty power supply to the front passenger's side impact sensor (see page 23-112)
    15-1 Faulty OPDS unit or OPDS not initialized (see page 23-114)
    15-2 Faulty side airbag cutoff indicator light circuit (see page 23-118)
    15-3 Faulty OPDS sensor (see page 23-123)




    Symptom Troubleshooting Index23-38

    Symptom

    Diagnostic procedure

    Also check for

    SRS indicator doesn't come on

    SRS Indicator Troubleshooting (see page 23-124)

    SRS indicator stays on when in ''SCS'' menu method

    SRS Indicator Troubleshooting (see step 1 on page 23-127 )

  • Inability to retrieve DTCs with the PGM Tester. Retrieve the flash codes using the SCS menu method (see page 23-26) .

    • Side airbag cutoff indicator stays on after bulb check (If the indicator stays on, it does not set a DTC)

  • Make sure nothing is on the front passenger's seat.
  • Make sure the front passenger's seat isn't wet. If the seat is wet, start the engine, and turn on the air conditioning system for 30 minutes to dry any moisture from the seat.
  • If the side airbag cutoff indicator stays on after the ignition switch is turned ON (II), initialize the OPDS unit (see page 23-30) .

    • - If the side airbag cutoff indicator operates normally, the system is OK.

    - If the side airbag cutoff indicator stays on, replace the OPDS sensor (see section 20) . The sensor is part of the seatback pad.




    23-39System Description23-40

    SRS Components

    Airbags

    The SRS is a safety device which, when used with the seat belt, is designed to help protect the driver and front passenger in a frontal impact exceeding a certain set limit. The system consists of the SRS unit, including safing sensor and impact sensor (A), the cable reel (B), the driver's airbag (C), the front passenger's airbag (D), side airbags (E), seat belt tensioners (I), and front impact sensors (J).

    Side Airbags

    The side airbags (E) are in each front seat-back. They help protect the upper torso of the driver or front seat passenger during a moderate to severe side impact. Side impact sensors (F) in each door sill and in the SRS unit detect such an impact and instantly inflate the driver's or the passenger's side airbag. Only one side airbag will deploy during a side impact. If the impact is on the passenger's side, the passenger's side airbag will deploy even if there is no passenger.

    Seat Belt and Seat Belt Buckle Tensioners

    The seat belt and seat belt buckle tensioners (G) are linked with the SRS airbags to further increase the effectiveness of the seat belt. In a front-end collision, the tensioners instantly retract the belt and buckle firmly to secure the occupants in their seats.

    OPDS

    The side airbag system also includes an Occupant Position Detection System (OPDS). This system consists of sensors (K) and a OPDS unit (H) in the front passenger's seat-back. The OPDS unit sends occupant height and position data to the SRS unit. If the SRS unit determines that the front passenger is of small stature (for example, a child) and the front passenger is leaning into the side airbag deployment path, it will automatically disable the airbag. The SRS unit will also disable the airbag when the OPDS detects certain objects on the seat. When the side airbag is disabled, the Side Airbag Cutoff indicator on the instrument panel alerts the driver that the passenger's side airbag will not deploy in a side impact. When the object is removed, or the passenger sits upright, the Side Airbag Cutoff indicator will go off, alerting the driver that the side airbag will deploy in a side impact.


    23-41

    SRS Operation

    The main circuit in the SRS unit senses and judges the force of impact and, if necessary, ignites the inflator charges. If battery voltage is too low or power is disconnected due to the impact, the voltage regulator and the back-up power circuit, respectively, will keep voltage at a constant level.

    For the SRS to operate:

    Driver's and Front Passenger's Airbag(s)

    (1) The frontal impact sensor must activate, and send electric signals to the microprocessor.

    (2) The microprocessor must compute the signals, and depending on the severity of the collision and whether the seat belt buckle switch is ON or OFF, it sends the appropriate signals to the airbag inflator(s).

    (3) The inflators that received signals must ignite and deploy the airbag (s).

    Side Airbag(s)

    (1) The side impact sensors must activate, and send electric signals to the microprocessor.

    (2) The microprocessor must compute the signals and send them to the side airbag inflator(s). However, the microprocessor cuts off the signals to the front passenger's side airbag if the SRS unit determines that the front passenger's head is in the deployment path of the side airbag.

    (3) The inflator that received the signal must ignite and deploy the side airbag.(With Side airbags)


    Self-diagnosis System

    A self-diagnosis circuit is built into the SRS unit; when the ignition switch is turned ON (II), the SRS indicator comes on and goes off after about 6 seconds if the system is operating normally.
    If the light does not come on, or does not go off after 6 seconds, or if it comes on while driving, it indicates an abnormality in the system. The system must be inspected and repaired as soon as possible.

    For better serviceability, the SRS unit memory stores a DTC that relates to the cause of the malfunction, and the unit is connected to the data link connector (DLC). This information can be read with the Honda PGM Tester when it is connected to the DLC (16P).

    Circuit Diagram23-42


    23-43



    Connectors23-44

    Connector No. *1

    Wire harness and connector

    Terminal

    Note *2

    Ref. No.

     

     

    Male

    Female

     

     

    U1o Dashboard wire harness B18P connector   o (1) 1
    U2o Floor wire harness 18P connector   o (1) 2
    U3o Floor wire harness 8P connector   o (1) 3
    F1o Dashboard wire harness B 2P connector   o (1) 4
    F2o Floor wire harness 18P connector   o 5
    F3o Dashboard wire harness A17P connector   o   6
    D1 D1o Driver's airbag 2P connector   o (1)(2) 10
    D1i Cable reel 2P connector o     9
    D2 D2o Cable reel 4P connector   o (1) 8
    D2i Dashboard wire harness B 4P connector o     7
    P1 P1o Front passenger's airbag 2P connector   o (1)(2) 10
    P1i Dashboard wire harness B 2P connector o     9
    TL1 TL1o Left side seat belt tensioner 2P connector     (1)(2) 10
    TL1i Floor wire harness 2P connector o     9
    TR1 TR1o Right side seat belt tensioner 2P connector     (1)(2) 10
    TR1i Floor wire harness 2P connector o     9
    T2 T2o Floor wire harness 4P connector o   (1) 10
    T2i Dashboard wire harness B 4P connector   o   9
    TB TBLi Floor wire harness 4P connector   o (1) 8
    TBLo Left side seat belt buckle tensioner 4P connector o     7
    TBRi Floor wire harness 4P connector   o    8
    TBRo Right side seat belt buckle tensioner 4P connector o     7
    SD SDo Driver's side airbag 2P connector o   (1)(2)(3) 11
    SDi Floor wire harness 2P connector   o   12
    SP SPo Front passenger's side airbag 2P connector o   (1)(2)(3) 11
    SPi Floor wire harness 2P connector   o   12
    FS FSL1i Engine compartment wire harness 2P connector   o (1)(3) 13
    FSR1i 2P connector   o   13
    FS2 FS2o Engine compartment wire harness 4P connector   o (1) 8
    FS2i Dashboard wire harness B 4P connector o     7
    IDi Floor wire harness 2P connector   o (1)(3) 13
    IPi Floor wire harness 2P connector   o   13
    O1i OPDS unit harness 8P connector   o   14
    O2 O2o OPDS unit harness 4P connector o     16
    O2i Floor wire harness 4P connector   o   15
    C1 Dashboard wire harness A 22P connector   o   17
    C2 Dashboard wire harness A 22P connector   o   18
    C3 Dashboard wire harness A18P connector   o   19
    C4 Floor wire harness A18P connector   o   20
    C5 Floor wire harness 21P connector   o   21
    C6 ECU wire harness 21P connector o     22




    *1: The connector numbers are original in this section that are different from other sections.

    *2: Note

    (1) Spring loaded lock connector

    (2) With built-in short contact connector

    (3) Waterproof connector

    23-45


    DTC Troubleshooting23-46

    DTC 1-1: Open in Driver's Airbag Inflator

    DTC 1-2: Increased Resistance in Driver's Airbag Inflator

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the D1o connector from the D1i connector (1).


    3. Connect the special tool (2 connector) to the D1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 1-1 or DTC 1-2 indicated?

    Yes : Go to step 9.

    No : Open or increased resistance in the driver's airbag inflator; replace the driver's airbag (see page 23-135).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the P1o connector (1) from the P1i connector (2).


    23-47

    1. Disconnect the TL1o and TR1o connectors (1) from the TL1i and TR1i connectors (2).


    2. Disconnect the U1o connector (1) from the SRS unit (A).


    3. Check resistance between the No. 7 and the No. 16 terminals of U1o connector. There should be
      2.0 - 3.0 .


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit or poor contact at the U1o connector and the SRS unit, check the connection between the U1o connector and the SRS unit. If the connection is OK, replace the SRS unit (see page 23-144).

    No : Open or increased resistance in dashboard wire harness B or the cable reel; replace dashboard wire harness B or the cable reel.

    DTC Troubleshooting (cont'd)23-48

    DTC 1-3: Short to Another Wire or Decreased Resistance in Driver's Airbag Inflator

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the D1o connector from the D1i connector (1).


    3. Connect the special tool (2 connector) to the D1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 1-3 indicated?

    Yes : Go to step 9.

    No : Short in the driver's airbag; replace the driver's airbag (see page 23-135).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the P1o connector (1) from the P1i connector (2).


    23-49

    1. Disconnect the TL1o and TR1o connectors (1) from the TL1i and TR1i connectors (2).


    2. Disconnect the U1o connector (1) from the SRS unit (A).


    3. Disconnect the special tool from the D1i connector.
    4. Check resistance between the No. 7 and the No. 16 terminals of the U1o connector. There should be 1 M or more.


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Go to step 15.

    1. Disconnect the cable reel from dashboard wire harness B. Check resistance between the No. 7 and the No. 16 terminals of the U1o connector. There should be 1 M or more.

    Is the resistance as specified?

    Yes : Replace the cable reel.

    No : Replace dashboard wire harness B.

    DTC Troubleshooting (cont'd)23-50

    DTC 1-4: Short to Power in Driver's Airbag Inflator

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the D1o connector from the D1i connector (1).


    3. Connect the special tool (2 connector) to the D1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 1-4 indicated?

    Yes : Go to step 9.

    No : Short to power in the driver's airbag; replace the driver's airbag (see page 23-135).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the P1o connector (1) from the P1i connector (2).


    3. Disconnect the TL1o and TR1o connectors (1) from the TL1i and TR1i connectors (2).


    23-51

    1. Disconnect the U1o connector (1) from the SRS unit (A).


    2. Disconnect the special tool from the D1i connector.
    3. Reconnect the battery negative cable.
    4. Turn the ignition switch ON (II).
    5. Check for voltage between the No. 7 terminal of U1o connector and body ground, between the No. 16 terminal and body ground. There should be 0.5 V or less.


    Wire side of female terminals

    Is the voltage as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Go to step 17.

    1. Turn the ignition switch OFF.
    2. Disconnect the cable reel from the dashboard wire harness.
    3. Turn the ignition switch ON (II).
    4. Check for voltage between the No. 7 terminal of U1o connector and body ground, between the No. 16 terminal and body ground. There should be 0.5 V or less.

    Is the voltage as specified?

    Yes : Replace the cable reel.

    No : Replace dashboard wire harness B.

    DTC Troubleshooting (cont'd)23-52

    DTC 1-5: Short to Ground in Driver's Airbag Inflator

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the D1o connector from the D1i connector (1).


    3. Connect the special tool (2 connector) to the D1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 1-5 indicated?

    Yes : Go to step 9.

    No : Short to ground in the driver's airbag inflator; replace the driver's airbag (see page 23-135).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the P1o connector (1) from the P1i connector (2).


    3. Disconnect the TL1o and TR1o connectors (1) from the TL1i and TR1i connectors (2).


    23-53

    1. Disconnect the U1o connector (1) from the SRS unit (A).


    2. Disconnect the special tool from the D1i connector.
    3. Check resistance between the No. 7 terminal of U1o connector and body ground, between the No.16 terminal and body ground. There should be 1 M or more.


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Go to step 15.

    1. Disconnect the cable reel from the dashboard wire harness.
    2. Check resistance between the No. 7 terminal of U1o connector and body ground, between the No. 16 terminal and body ground. There should be
      1 M or more.

    Is the resistance as specified?

    Yes : Replace the cable reel.

    No : Replace dashboard wire harness B.

    DTC Troubleshooting (cont'd)23-54

    DTC 2-1: Open in Front Passenger's Airbag Inflator

    DTC 2-2: Increased Resistance in Front Passenger's Airbag Inflator

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time.Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the P1o connector from the P1i connector (1).


    3. Connect the special tool (2 connector) to the P1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 2-1 or DTC 2-2 indicated?

    Yes : Go to step 9.

    No : Open or increased resistance in the front passenger's airbag inflator; replace the front passenger's airbag (see page 23-136).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the D1o connector (1) from the D1i connector (2).


    3. Disconnect the TL1o and TR1o connectors (1) from the TL1i and TR1i connectors (2).


    23-55

    1. Disconnect the U1o connector (1) from the SRS unit (A).


    2. Check resistance between the No. 5 and No. 14 terminals of U1o connector. There should be
      2.0 - 3.0 .


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit or poor contact at the U1o connector; check the connection between U1o connector and the SRS unit. If the connector is OK, replace the SRS unit (see page 23-144).

    No : Open or increased resistance in the dashboard wire harness B; replace dashboard wire harness B.

    DTC 2-3: Short to Another Wire or Decreased Resistance in Front Passenger's Airbag Inflator

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time.Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the P1o connector from the P1i connector (1).


    3. Connect the special tool (2 connector) to the P1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.

    DTC Troublshooting (cont'd)23-56

    1. Read the DTC.

    Is DTC 2-3 indicated?

    Yes : Go to step 9.

    No : Short in the front passenger's airbag inflator; replace the front passenger's airbag (see page 23-136).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the D1o connector (1) from the D1i connector (2).


    3. Disconnect the TL1o and TR1o connectors (1) from the TL1i and TR1i connectors (2).


    4. Disconnect the U1o connector (1) from the SRS unit (A).


    5. Disconnect the special tool from the P1i connector.
    6. Check resistance between the No. 5 and No. 14 terminals of U1o connector. There should be 1 or more.


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short in dashboard wire harness B; replace dashboard wire harness B.

    23-57

    DTC 2-4: Short to Power in Front Passenger's Airbag Inflator

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time.Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the P1o connector from the P1i connector (1).


    3. Connect the special tool (2 connector) to the P1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 2-4 indicated?

    Yes : Go to step 9.

    No : Short to power in the front passenger's airbag inflator; replace the front passenger's airbag (see page 23-136).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the D1o connector (1) from the D1i connector (2).


    3. Disconnect the TL1o and TR1o connectors (1) from the TL1i and TR1i connectors (2).


    DTC Troubleshooting (cont'd)23-58

    1. Disconnect the U1o connector (1) from the SRS unit (A).


    2. Disconnect the special tool from the P1i connector.
    3. Reconnect the battery negative cable.
    4. Turn the ignition switch ON (II).
    5. Check for voltage between the No. 5 terminal of the U1o connector and body ground, and between the No. 14 terminal and body ground. There should be 0.5 V or less.


    Wire side of female terminals

    Is the voltage as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short to power in the dashboard wire harness B; replace the dashboard wire harness B.

    DTC 2-5: Short to Ground in Front Passenger's Airbag Inflator

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time.Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the P1o connector from the P1i connector (1).


    3. Connect the special tool (2 connector) to the P1i connector.

    23-59

    1. Reconnect the battery negative cable.
    2. Erase the DTC memory.
    3. Read the DTC.

    Is DTC 2-5 indicated?

    Yes : Go to step 9.

    No : Short to ground in the front passenger's airbag inflator; replace the front passenger's airbag (see page 23-136).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the D1o connector (1) from the D1i connector (2).


    3. Disconnect the TL1o and TR1o connectors (1) from the TL1i and TR1i connectors (2).


    4. Disconnect the U1o connector (1) from the SRS unit (A).


    5. Disconnect the special tool from the P1i connector.
    6. Check resistance between the No. 5 terminal of the U1o connector and body ground, and between the No. 14 terminal and body ground. There should be 1 M or more.


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short to ground in dashboard wire harness B; replace dashboard wire harness B.

    DTC Troubleshooting (cont'd)23-60

    DTC 3-1: Open in Left Side Seat Belt Tensioner

    DTC 3-2: Increased Resistance in Left Side Seat Belt Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TL1o connector from the TL1i connector (1).


    3. Connect the special tool (2 connector) to the TL1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 3-1 or DTC 3-2 indicated?

    Yes : Go to step 9.

    No : Open or increased resistance in the left side seat belt tensioner; replace the left side seat belt (see page 23-4).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the T2o connector (1) from the T2i connector (2).


    3. Connect the special tool (2 connectors) to the T2i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 3-1 or DTC 3-2 indicated?

    Yes : Go to step 15.

    No : Open or increased resistance in the floor wire harness; replace the floor wire harness.

    1. Disconnect the battery negative cable, and wait for 3 minutes.

    23-61

    1. Disconnect the D1o connector (1), P1o connector (2), and TR1i connector (3).


    2. Disconnect the U1o connector (1) from the SRS unit (A).


    3. Check resistance between the No. 8 terminal and the No. 17 terminal of U1o connector. There should be 2.0 - 3.0 .


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit or poor contact at U1o connector and the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit (see page 23-144).

    No : Open or increased resistance in dashboard wire harness B; replace dashboard wire harness B.

    DTC Troubleshooting (cont'd)23-62

    DTC 3-3: Short to Another Wire or Decreased Resistance in Left Side Seat Belt Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TL1o connector from the TL1i connector (1).


    3. Connect the special tool (2 connector) to the TL1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 3-3 indicated?

    Yes : Go to step 9.

    No : Short in the left side seat belt tensioner; replace the left side seat belt (see page 23-4).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the T2o connector (1) from the T2i connector (2).


    3. Connect the special tool (2 connectors) to the T2i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 3-3 indicated?

    Yes : Go to step 15.

    No : Short in the floor wire harness; replace the floor wire harness.

    1. Disconnect the battery negative cable, and wait for 3 minutes.

    23-63

    1. Disconnect the D1o connector (1), P1o connector (2), and TR1i connector (3).


    2. Disconnect the U1o connector (1) from the SRS unit (A).


    3. Disconnect the special tool from the T2i connector.
    4. Check resistance between the No. 8 terminal and the No. 17 terminal U1o connector. There should be 1 M or more.


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short in dashboard wire harness B; replace dashboard wire harness B.

    DTC Troubleshooting (cont'd)23-64

    DTC 3-4: Short to Power in Left side Seat Belt Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TL1o connector from the TL1i connector (1).


    3. Connect the special tool (2 connector) to the TL1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 3-4 indicated?

    Yes : Go to step 9.

    No : Short to power in the left side seat belt tensioner; replace the left side seat belt (see page 23-4).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the T2o connector (1) from the T2i connector (2).


    3. Connect the special tool (2 connectors) to the T2i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 3-4 indicated?

    Yes : Go to step 15.

    No : Short to power in the floor wire harness; replace the floor wire harness.

    1. Disconnect the battery negative cable, and wait for 3 minutes.

    23-65

    1. Disconnect the D1o connector (1), P1o connector (2), and TR1i connector (3).


    2. Disconnect the U1o connector (1) from the SRS unit (A).


    3. Disconnect the special tool (2 ) from the T2i connector.
    4. Reconnect the battery negative cable.
    5. Turn the ignition switch ON (II).
    6. Check for voltage between the No. 8 terminal of U1o connector and body ground, and between the No. 17 terminal and body ground. There should be 0.5 V or less.


    Wire side of female terminals

    Is the voltage as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short to power in dashboard wire harness B; replace dashboard wire harness B.

    DTC Troubleshooting (cont'd)23-66

    DTC 3-5: Short to Ground in Left Side Seat Belt Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TL1o connector from the TL1i connector (1).


    3. Connect the special tool (2 connector) to the TL1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 3-5 indicated?

    Yes : Go to step 9.

    No : Short to ground in the left side seat belt tensioner; replace the left side seat belt (see page 23-4).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the T2o connector (1) from the T2i connector (2).


    3. Connect the special tool (2 connectors) to the T2i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 3-5 indicated?

    Yes : Go to step 15.

    No : Short to ground in the floor wire harness; replace the floor wire harness.

    1. Disconnect the battery negative cable, and wait for 3 minutes.

    23-67

    1. Disconnect the D1o connector (1), P1o connector (2), and TR1i connector (3).


    2. Disconnect the U1o connector (1) from the SRS unit (A).


    3. Disconnect the special tool from the T2i connector.
    4. Check resistance between the No. 8 terminal of U1o connector and body ground, and between the No. 17 terminal and body ground. There should be 1 M or more.


    Wire side of female terminal

    Is the resistance as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short to ground in dashboard wire harness B; replace dashboard wire harness B.

    DTC Troubleshooting (cont'd)23-68

    DTC 21-1: Open in Left Side Seat Belt Buckle Tensioner

    DTC 21-2: Increased Resistance in Left Side Seat Belt Buckle Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TBLo connector from the TBLi connector (1).


    3. Connect the special tool (2 connectors) to the TBLi connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 21-1 or DTC 21-2 indicated?

    Yes : Go to step 9.

    No : Open or increased resistance in the left side seat belt buckle tensioner; replace the left side seat belt buckle.

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the SDo and SPo connectors (1) and the TBRo connector (2).


    23-69

    1. Disconnect the U2o connector (1) from the SRS unit (A).


    2. Check resistance between the No. 1 and No. 10 terminals of the U2o connector. There should be 2.0 - 3.0 .


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit or poor contact at U2o connector and at the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit (see page 23-144).

    No : Open or increased resistance in the floor wire harness; replace the floor wire harness.

    DTC 21-3: Short to Auother Wire or Decreased Resistance in Left Side Seat Belt Buckle Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TBLo connector from the TBLi connector (1).


    3. Connect the special tool (2 connectors) to the TBLi connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.

    DTC Troubleshooting (cont'd)23-70

    1. Read the DTC.

    Is DTC 21-3 indicated?

    Yes : Go to step 9.

    No : Open or increased resistance in the left side seat belt buckle tensioner; replace the left side seat belt buckle.

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the SDo and SPo connectors (1) and the TBRo connector (2).


    3. Disconnect the U2o connector (1) from the SRS unit (A).


    4. Disconnect the special tool (2 connectors) from the TBLi connecto.
    5. Check resistance between the No. 1 and No. 10 terminals of the U2o connector. There should be 2.0 - 3.0 .


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit or poor contact at U2o connector and at the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit (see page 23-144).

    No : Open or increased resistance in the floor wire harness; replace the floor wire harness.

    23-71

    DTC 21-4: Short to Power in Left Side Seat Belt Buckle Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TBLo connector from the TBLi connector (1).


    3. Connect the special tool (2 connectors) to the TBLi connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 3-9 or 21-4 indicated?

    Yes : Go to step 9.

    No : Short to power in the left side seat belt buckle tensioner; replace the left side seat belt buckle.

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the SDo and SPo connectors (1) and the TBRo connector (2).


    DTC Troubleshooting (cont'd)23-72

    1. Disconnect the U2o connector (A) from the SRS unit (A).


    2. Disconnect the special tool (2 connectors) from the TBLi connector.
    3. Reconnect the battery negative cable.
    4. Turn the ignition switch ON (II).
    5. Check for voltage between the No. 1 terminal of the U2o connector and body ground. and between the No. 10 terminal and body ground. There should be 0.5 V or less.


    Wire side of female terminals

    Is the voltage as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short to power in the floor wire harness; replace the floor wire harness.

    DTC 21-5: Short to Ground in Left Side Seat Belt Buckle Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator light comes on for about 6 seconds and then goes off.

    Does the SRS indicator light stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TBLo connector from the TBLi connector (1).


    3. Connect the special tool (2 connectors) to the TBLi connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.

    23-73

    1. Read the DTC.

    Is DTC 21-5 indicated?

    Yes : Go to step 9.

    No : Short to ground in the left side seat belt buckle tensioner; replace the left side seat belt buckle.

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the SDo and SPo connectors (1) and the TBRo connector (2).


    3. Disconnect the U2o connector (1) from the SRS unit (A).


    4. Disconnect the special tool (2 connectors) from the TBLi connector.
    5. Check resistance between the No. 1 terminal of the U2o connector and body ground. and between the No. 10 terminal and body ground. There should be 1 M or more.


    Wire side of female terminal

    Is the resistance as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short to ground in the floor wire harness; replace the floor wire harness.

    DTC Troubleshooting (cont'd)23-74

    DTC 4-1: Open in Right Side Seat Belt Tensioner

    DTC 4-2: Increase Resistance in Right Side Seat Belt Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TR1o connector from the TR1i connector (1).


    3. Connect the special tool (2 connector) to the TR1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 4-1 or DTC 4-2 indicated?

    Yes : Go to step 9.

    No : Open or increased resistance in the right side seat belt tensioner; replace the right side seat belt (see page 23-4).

    1. Disconnect the battery negative cable, and wait for three minutes.
    2. Disconnect the T2o connector (1) from the T2i connector (2).


    3. Connect the special tool (2 connectors) to the T2i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 4-1 indicated?

    Yes : Go to step 15.

    No : Open or increased resistance in the floor wire harness; replace the floor wire harness.

    23-75

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the D1o connector (1), P1o connector (2), and TL1i connector (3).


    3. Disconnect the U1o connector (1) from the SRS unit (A).


    4. Check resistance between the No. 9 terminal and the No. 18 terminal of U1o connector. There should be 2.0 - 3.0 .


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit or poor contact at U1o connector and the SRS unit. Check the connection between connector and the SRS unit. If the connection is OK, replace the SRS unit (see page 23-144).

    No : Open or increased resistance in dashboard wire harness B; replace dashboard wire harness B.

    DTC Troubleshooting (cont'd)23-76

    DTC 4-3: Short to Another Wire or Decreased Resistance in Right Side Seat Belt Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TR1o connector from the TR1i connector (1).


    3. Connect the special tool (2 connector) to the TR1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 4-3 indicated?

    Yes : Go to step 9.

    No : Short in the right side seat belt tensioner; replace the right side seat belt (see page 23-4).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the T2o connector (1) from the T2i connector (2).


    3. Connect the special tool (2 connectors) to the T2i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 4-3 indicated?

    Yes : Go to step 15.

    No : Short in the floor wire harness; replace the floor wire harness.

    1. Disconnect the battery negative cable, and wait for 3 minutes.

    23-77

    1. Disconnect the D1o connector (1), P1o connector (2), and TL1i connector (3).


    2. Disconnect the U1o connector (1) from the SRS unit (A).


    3. Disconnect the special tool from the T2i connector.
    4. Check resistance between the No. 9 terminal and the No. 18 terminal of U1o connector. There should be 1 M or more.


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short in dashboard wire harness B; replace dashboard wire harness B.

    DTC Troubleshooting (cont'd)23-78

    DTC 4-4: Short to Power in Right Side Seat Belt Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TR1o connector from the TR1i connector (1).


    3. Connect the special tool (2 connector) to the TR1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 4-4 indicated?

    Yes : Go to step 9.

    No : Short to power in the right side seat belt tensioner; replace the right side seat belt (see page 23-4).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the T2o connector (1) from the T2i connector (2).


    3. Connect the special tool (2 connectors) to the T2i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 4-4 indicated?

    Yes : Go to step 15.

    No : Short to power in the floor wire harness; replace the floor wire harness.

    23-79

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the D1o connector (1), P1o connector (2), and TL1i connector (3).


    3. Disconnect the U1o connector (1) from the SRS unit (A).


    4. Disconnect the special tool from the T2i connector.
    5. Reconnect the battery negative cable.
    6. Turn the ignition switch ON (II).
    7. Check for voltage between the No. 9 terminal of U1o connector and body ground, and between the No. 18 terminal and body ground. There should be 0.5 V or less.


    Wire side of female terminals

    Is the voltage as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short to power in dashboard wire harness B; replace dashboard wire harness B.

    DTC Troubleshooting (cont'd)23-80

    DTC 4-5: Short to Ground in Right Side Seat Belt Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead C 07TAZ-SZ5011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TR1o connector from the TR1i connector (1).


    3. Connect the special tool (2 connector) to the TR1i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 4-5 indicated?

    Yes : Go to step 9.

    No : Short to ground in the right side seat belt tensioner; replace the right side seat belt (see page 23-4).

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the T2o connector (1) from the T2i connector (2).


    3. Connect the special tool (2 connectors) to the T2i connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 4-5 indicated?

    Yes : Go to step 15.

    No : Short to ground in the floor wire harness; replace the floor wire harness.

    1. Disconnect the battery negative cable, and wait for 3 minutes.

    23-81

    1. Disconnect the D1o connector (1), P1o connector (2), and TL1i connector (3).


    2. Disconnect the U1o connector (1) from the SRS unit (A).


    3. Disconnect the special tool (2 ) from the T2i connector.
    4. Check resistance between the No. 9 terminal of U1o connector and body ground, and between the No. 18 terminal and body ground. There should be 1 M or more.


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short to ground in dashboard wire harness B; replace dashboard wire harness B.

    DTC Troubleshooting (cont'd)23-82

    DTC 22-1: Open in Right Side Seat Belt Buckle Tensioner

    DTC 22-2: Increased Resistance in Right Side Seat Belt Buckle Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TBRo connector from the TBRi connector (1).


    3. Connect the special tool (2 connectors) to the TBRi connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 22-1 or DTC 22-2 indicated?

    Yes : Go to step 9.

    No : Open or increased resistance in the right side seat belt buckle tensioner; replace the right side seat belt buckle.

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the SDo and SPo connectors (1) and the TBLo connector (2).


    23-83

    1. Disconnect the U2o connector (1) from the SRS unit (A).


    2. Check resistance between the No. 2 and No. 11 terminals of the U2o connector. There should be 2.0 - 3.0 .


    Wire side of female terminals

    Is the resistance as specified?

    Yes : Faulty SRS unit or poor contact at U2o connector and at the SRS unit. Check the connection between connector and the SRS unit. If the connection is OK, replace the SRS unit (see page 23-144).

    No : Open or increased resistance in the floor wire harness; replace the floor wire harness.

    DTC 22-3: Short to Another Wire or Decreased Resistance in Right Side Seat Belt Buckle Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TBRo connector from the TBRi connector (1).


    3. Connect the special tool (2 connectors) to the TBRi connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.

    DTC Troubleshooting (cont'd)23-84

    1. Read the DTC.

    Is DTC 22-3 indicated?

    Yes : Go to step 9.

    No : Short in the light side seat belt buckle tensioner; replace the light side seat belt buckle.

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the SDo and SPo connectors (1) and the TBLo connector (2).


    3. Disconnect the U2o connector (1) from the SRS unit (A).


    4. Disconnect the special tool (2 connectors) from the TBRi connector.
    5. Check resistance between the No. 2 and No. 11 terminals of the U2o connector. There should be 1 M or more.


    Wire side of female terminal

    Is the resistance as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short in the floor wire harness; replace the floor wire harness.

    23-85

    DTC 22-4: Short to Power in Right Side Seat Belt Buckle Tensioner

    Special Tools Required
  • SRS inflator simulator 07SAZ-TB4011A
  • SRS simulator lead F 07XAZ-SZ30100
    1. Erase the DTC memory (see page 23-29) .
    2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on?

    Yes : Go to step 3.

    No : Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-29).

    1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the TBRo connector from the TBRi connector (1).


    3. Connect the special tool (2 connectors) to the TBRi connector.
    4. Reconnect the battery negative cable.
    5. Erase the DTC memory.
    6. Read the DTC.

    Is DTC 22-4 indicated?

    Yes : Go to step 9.

    No : Short to power in the right side seat belt buckle tensioner; replace the right side seat belt buckle.

    1. Disconnect the battery negative cable, and wait for 3 minutes.
    2. Disconnect the SDo and SPo connectors (1) and the TBLo connector (2).


    DTC TROUBLESHOOTING (cont'd)23-86

    1. Disconnect the U2o connector (1) from the SRS unit (A).


    2. Disconnect the special tool (2 connectors) from the TBRi connector.
    3. Reconnect the battery negative cable.
    4. Turn the ignition switch ON (II).
    5. Check for voltage between the No. 2 terminal of the U2o connector and body ground. and between the No. 11 terminal and body ground. There should be 0.5 V or less.


    Wire side of female terminals

    Is the voltage as specified?

    Yes : Faulty SRS unit; replace the SRS unit (see page 23-144).

    No : Short to power in the floor wire harness; replace the floor wire harness.

    DTC 22-5: Short to Ground in Right Side Seat Belt Buckle Tensioner

    Special Tools Required
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