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Home >> Toyota >> 2014 >> Avalon XLE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes & Symptom Tests) (Except Hybrid) >> Airbag System >> DTC B1635/24: Rear Airbag Sensor LH Circuit Malfunction [10/2013 - ] >> Procedure

DTC B1635/24: Rear Airbag Sensor LH Circuit Malfunction [10/2013 - ]: Procedure

  1. CHECK CONNECTORS 
    1. Turn the engine switch off.
    2. Disconnect the cable from the negative (-) battery terminal.
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Check that the connectors are properly connected to the side airbag sensor assembly LH, side No. 2 airbag sensor assembly LH and door side airbag sensor LH. Also check that the connectors that link the floor wire and front door wire LH are properly connected.

      OK

      The connectors are properly connected.

      HINT: 

      If the connectors are not properly connected, reconnect the connectors and proceed to the next inspection.

    4. Disconnect the connectors from the side airbag sensor assembly LH, side No. 2 airbag sensor assembly LH and door side airbag sensor LH. Also disconnect the connectors that link the floor wire and front door wire LH.
    5. Check that the terminals of the connectors are not damaged.

      OK

      The terminals are not deformed or damaged.

    NG → REPLACE WIRE HARNESS 

    OK: Go to next step 

  2. CHECK FLOOR WIRE (OPEN) 
    1. Using a service wire, connect terminals 4 (BCL+) and 3 (BCL-) of connector C.
      GTY381092Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J6-1 (BCL+) - J6-2 (BCL-) Always Below 1 Ω
    3. Disconnect the service wire from connector C.
      TEXT IN ILLUSTRATION

      *1 Side No. 2 Airbag Sensor Assembly LH
      *2 Side Airbag Sensor Assembly LH
      *3 Floor Wire
      *4 Service Wire
      *a Front view of wire harness connector
      (to Side Airbag Sensor Assembly LH)
      *b Front view of wire harness connector
      (to Side No. 2 Airbag Sensor Assembly LH)

    NG → REPLACE FLOOR WIRE 

    OK: Go to next step 

  3. CHECK FLOOR WIRE (SHORT) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY367281Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      J6-1 (BCL+) - J6-2 (BCL-) Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

      *1 Side No. 2 Airbag Sensor Assembly LH
      *2 Side Airbag Sensor Assembly LH
      *3 Floor Wire
      *a Front view of wire harness connector
      (to Side Airbag Sensor Assembly LH)

    NG → REPLACE FLOOR WIRE 

    OK: Go to next step 

  4. CHECK FLOOR WIRE (SHORT TO B+) 
    1. Connect the cable to the negative (-) battery terminal.
      GTY367281Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      J6-1 (BCL+) - Body ground Engine switch on (IG) Below 1 V
      J6-2 (BCL-) - Body ground Engine switch on (IG) Below 1 V
    4. Turn the engine switch off.
    5. Disconnect the cable from the negative (-) battery terminal.
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      TEXT IN ILLUSTRATION

      *1 Side No. 2 Airbag Sensor Assembly LH
      *2 Side Airbag Sensor Assembly LH
      *3 Floor Wire
      *a Front view of wire harness connector
      (to Side Airbag Sensor Assembly LH)

    NG → REPLACE FLOOR WIRE 

    OK: Go to next step 

  5. CHECK FLOOR WIRE (SHORT TO GROUND) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY367281Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      J6-1 (BCL+) - Body ground Always 1 MΩ or higher
      J6-2 (BCL-) - Body ground Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

      *1 Side No. 2 Airbag Sensor Assembly LH
      *2 Side Airbag Sensor Assembly LH
      *3 Floor Wire
      *a Front view of wire harness connector
      (to Side Airbag Sensor Assembly LH)

    NG → REPLACE FLOOR WIRE 

    OK: Go to next step 

  6. CHECK WIRE HARNESS (OPEN) 
    1. Connect the connectors that link the floor wire and front door wire LH.
      GTY375657Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a service wire, connect terminals 2 (BDL+) and 1 (BDL-) of connector E.
      NOTE:

      Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J10-1 (BDL+) - J10-2 (BDL-) Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *3 Service Wire
      *a Front view of wire harness connector
      (to Side No. 2 Airbag Sensor Assembly LH)
      *b Front view of wire harness connector
      (to Door Side Airbag Sensor LH)

    NG → See step   13 

    OK: Go to next step 

  7. CHECK WIRE HARNESS (SHORT) 
    1. Disconnect the service wire from connector E.
      GTY379736Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J10-1 (BDL+) - J10-2 (BDL-) Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *a Front view of wire harness connector
      (to Side No. 2 Airbag Sensor Assembly LH)

    NG → See step   14 

    OK: Go to next step 

  8. CHECK WIRE HARNESS (SHORT TO B+) 
    1. Connect the cable to the negative (-) battery terminal.
      GTY379736Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      J10-1 (BDL+) - Body ground Engine switch on (IG) Below 1 V
      J10-2 (BDL-) - Body ground Engine switch on (IG) Below 1 V
    4. Turn the engine switch off.
    5. Disconnect the cable from the negative (-) battery terminal.
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *a Front view of wire harness connector
      (to Side No. 2 Airbag Sensor Assembly LH)

    NG → See step   15 

    OK: Go to next step 

  9. CHECK WIRE HARNESS (SHORT TO GROUND) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY379736Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      J10-1 (BDL+) - Body ground Always 1 MΩ or higher
      J10-2 (BDL-) - Body ground Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *a Front view of wire harness connector
      (to Side No. 2 Airbag Sensor Assembly LH)

    NG → See step   16 

    OK: Go to next step 

  10. CHECK SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH 
    1. Connect the connectors to the side airbag sensor assembly LH and door side airbag sensor LH.
      GTY316477Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Interchange the side No. 2 airbag sensor assembly LH with RH and connect the connectors.
    3. Connect the cable to the negative (-) battery terminal.
    4. Clear the DTCs stored in memory. Refer to DTC CHECK / CLEAR [10/2013 - ] .
    5. Turn the engine switch off.
    6. Turn the engine switch on (IG), and wait for at least 60 seconds.
    7. Check for DTCs. Refer to DTC CHECK / CLEAR [10/2013 - ] .

      Result

      Result Proceed to
      DTC B1635/24 is output. A
      DTC B1630/23 is output. B
      DTCs B1630/23 and B1635/24 are not output. C

      HINT: 

      Codes other than DTCs B1630/23 and B1635/24 may be output at this time, but they are not related to this check.

    8. Turn the engine switch off.
    9. Disconnect the cable from the negative (-) battery terminal.
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    10. Return the side No. 2 airbag sensor assembly LH and RH to their original positions and connect the connectors.
      TEXT IN ILLUSTRATION

      *1 Side No. 2 Airbag Sensor Assembly RH
      *2 Side Airbag Sensor Assembly LH

    B → See step   18 

    C → See step   17 

    A: Go to next step 

  11. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH 
    1. Interchange the side airbag sensor assembly LH with RH and connect the connectors.
      GTY315873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the cable to the negative (-) battery terminal.
    3. Clear the DTCs stored in memory. Refer to DTC CHECK / CLEAR [10/2013 - ] .
    4. Turn the engine switch off.
    5. Turn the engine switch on (IG), and wait for at least 60 seconds.
    6. Check for DTCs. Refer to DTC CHECK / CLEAR [10/2013 - ] .

      Result

      Result Proceed to
      DTC B1635/24 is output. A
      DTC B1630/23 is output. B
      DTCs B1630/23 and B1635/24 are not output. C

      HINT: 

      Codes other than DTCs B1630/23 and B1635/24 may be output at this time, but they are not related to this check.

    7. Turn the engine switch off.
    8. Disconnect the cable from the negative (-) battery terminal.
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    9. Return the side airbag sensor assembly LH and RH to their original positions and connect the connectors.
      TEXT IN ILLUSTRATION

      *1 Side Airbag Sensor Assembly RH
      *2 Airbag ECU Assembly

    B → See step   20 

    C → See step   17 

    A: Go to next step 

  12. CHECK DOOR SIDE AIRBAG SENSOR LH 
    1. Disconnect the connector from the door side airbag sensor LH.
      GTY383533Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the cable to the negative (-) battery terminal.
    3. Clear the DTCs stored in memory. Refer to DTC CHECK / CLEAR [10/2013 - ] .
    4. Turn the engine switch off.
    5. Turn the engine switch on (IG), and wait for at least 60 seconds.
    6. Check for DTCs. Refer to DTC CHECK / CLEAR [10/2013 - ] .

      OK

      DTC B1635/24 is not output.

      HINT: 

      Codes other than DTC B1635/24 may be output at this time, but they are not related to this check.

      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH

    NG → See step   19 

    OK → See step   21 

  13. CHECK FRONT DOOR WIRE LH (OPEN) 
    1. Disconnect the front door wire LH connector from the floor wire.
      GTY360903Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      The service wire has already been inserted into connector E.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      GJ1-1 (BDL+) - GJ1-2 (BDL-) Always Below 1 Ω
    3. Disconnect the service wire from connector E.
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Service Wire
      *a Front view of wire harness connector
      (to Floor Wire)
      *b Front view of wire harness connector
      (to Door Side Airbag Sensor LH)

    NG → REPLACE FRONT DOOR WIRE LH 

    OK → REPLACE FLOOR WIRE 

  14. CHECK FRONT DOOR WIRE LH (SHORT) 
    1. Disconnect the front door wire LH connector from the floor wire.
      GTY366047Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      GJ1-1 (BDL+) - GJ1-2 (BDL-) Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *a Front view of wire harness connector
      (to Floor Wire)

    NG → REPLACE FRONT DOOR WIRE LH 

    OK → REPLACE FLOOR WIRE 

  15. CHECK FRONT DOOR WIRE LH (SHORT TO B+) 
    1. Disconnect the front door wire LH connector from the floor wire.
      GTY366047Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the cable to the negative (-) battery terminal.
    3. Turn the engine switch on (IG).
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      GJ1-1 (BDL+) - Body ground Engine switch on (IG) Below 1 V
      GJ1-2 (BDL-) - Body ground Engine switch on (IG) Below 1 V
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *a Front view of wire harness connector
      (to Floor Wire)

    NG → REPLACE FRONT DOOR WIRE LH 

    OK → REPLACE FLOOR WIRE 

  16. CHECK FRONT DOOR WIRE LH (SHORT TO GROUND) 
    1. Disconnect the front door wire LH connector from the floor wire.
      GTY366047Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      GJ1-1 (BDL+) - Body ground Always 1 MΩ or higher
      GJ1-2 (BDL-) - Body ground Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *a Front view of wire harness connector
      (to Floor Wire)

    NG → REPLACE FRONT DOOR WIRE LH 

    OK → REPLACE FLOOR WIRE 

  17. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2013 - ] 
  18. REPLACE SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH. Refer to  REMOVAL [10/2013 - ] 
  19. REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [10/2013 - ] 
  20. REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH. Refer to  REMOVAL [10/2013 - ] 
  21. REPLACE DOOR SIDE AIRBAG SENSOR LH. Refer to  REMOVAL [10/2013 - ] 
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