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Home >> Toyota >> 2017 >> Avalon XLE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes & Symptom Tests - (Except Hybrid) >> Airbag System >> DTC B1630/23: Rear Airbag Sensor RH Circuit Malfunction [10/2014 - ] >> Procedure

DTC B1630/23: Rear Airbag Sensor RH Circuit Malfunction [10/2014 - ]: 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 RH, side No. 2 airbag sensor assembly RH and door side airbag sensor RH. Also check that the connectors that link the No. 2 floor wire and front door wire RH 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 RH, side No. 2 airbag sensor assembly RH and door side airbag sensor RH. Also disconnect the connectors that link the No. 2 floor wire and front door wire RH.
    5. Check that the terminals of the connectors are not damaged.

      OK

      The terminals are not deformed or damaged.

    Result: 

    NG 

    REPLACE WIRE HARNESS 

    Result: 

    OK 

    See step  2

  2. CHECK NO. 2 FLOOR WIRE (OPEN) 
    1. Using a service wire, connect terminals 4 (BCR+) and 3 (BCR-) of connector C.
      GTY539369Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Side No. 2 Airbag Sensor Assembly RH
      *2 Side Airbag Sensor Assembly RH
      *3 No. 2 Floor Wire
      *4 Service Wire
      *a Front view of wire harness connector
      (to Side Airbag Sensor Assembly RH)
      *b Front view of wire harness connector
      (to Side No. 2 Airbag Sensor Assembly RH)
      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
      K6-1 (BCR+) - K6-2 (BCR-) Always Below 1 Ω
    3. Disconnect the service wire from connector C.

    Result: 

    NG 

    REPLACE NO. 2 FLOOR WIRE 

    Result: 

    OK 

    See step  3

  3. CHECK NO. 2 FLOOR WIRE (SHORT) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY605171Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      K6-1 (BCR+) - K6-2 (BCR-) Always 1 MΩ or higher

    Result: 

    NG 

    REPLACE NO. 2 FLOOR WIRE 

    Result: 

    OK 

    See step  4

  4. CHECK NO. 2 FLOOR WIRE (SHORT TO B+) 
    1. Connect the cable to the negative (-) battery terminal.
      GTY605171Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Side No. 2 Airbag Sensor Assembly RH
      *2 Side Airbag Sensor Assembly RH
      *3 No. 2 Floor Wire
      *a Front view of wire harness connector
      (to Side Airbag Sensor Assembly RH)
    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
      K6-1 (BCR+) - Body ground Engine switch on (IG) Below 1 V
      K6-2 (BCR-) - 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.

    Result: 

    NG 

    REPLACE NO. 2 FLOOR WIRE 

    Result: 

    OK 

    See step  5

  5. CHECK NO. 2 FLOOR WIRE (SHORT TO GROUND) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY605171Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      K6-1 (BCR+) - Body ground Always 1 MΩ or higher
      K6-2 (BCR-) - Body ground Always 1 MΩ or higher

    Result: 

    NG 

    REPLACE NO. 2 FLOOR WIRE 

    Result: 

    OK 

    See step  6

  6. CHECK WIRE HARNESS (OPEN) 
    1. Connect the connectors that link the No. 2 floor wire and front door wire RH.
      GTY601094Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor RH
      *2 Side No. 2 Airbag Sensor Assembly RH
      *3 Service Wire
      *a Front view of wire harness connector
      (to Side No. 2 Airbag Sensor Assembly RH)
      *b Front view of wire harness connector
      (to Door Side Airbag Sensor RH)
    2. Using a service wire, connect terminals 2 (BDR+) and 1 (BDR-) 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
      K8-1 (BDR+) - K8-2 (BDR-) Always Below 1 Ω

    Result: 

    NG 

    See step  13

    Result: 

    OK 

    See step  7

  7. CHECK WIRE HARNESS (SHORT) 
    1. Disconnect the service wire from connector E.
      GTY593417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor RH
      *2 Side No. 2 Airbag Sensor Assembly RH
      *a Front view of wire harness connector
      (to Side No. 2 Airbag Sensor Assembly RH)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K8-1 (BDR+) - K8-2 (BDR-) Always 1 MΩ or higher

    Result: 

    NG 

    See step  14

    Result: 

    OK 

    See step  8

  8. CHECK WIRE HARNESS (SHORT TO B+) 
    1. Connect the cable to the negative (-) battery terminal.
      GTY593417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor RH
      *2 Side No. 2 Airbag Sensor Assembly RH
      *a Front view of wire harness connector
      (to Side No. 2 Airbag Sensor Assembly RH)
    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
      K8-1 (BDR+) - Body ground Engine switch on (IG) Below 1 V
      K8-2 (BDR-) - 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.

    Result: 

    NG 

    See step  15

    Result: 

    OK 

    See step  9

  9. CHECK WIRE HARNESS (SHORT TO GROUND) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY593417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      K8-1 (BDR+) - Body ground Always 1 MΩ or higher
      K8-2 (BDR-) - Body ground Always 1 MΩ or higher

    Result: 

    NG 

    See step  16

    Result: 

    OK 

    See step  10

  10. CHECK SIDE NO. 2 AIRBAG SENSOR ASSEMBLY RH 
    1. Connect the connectors to the side airbag sensor assembly RH and door side airbag sensor RH.
      GTY579902Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Side No. 2 Airbag Sensor Assembly LH
      *2 Side Airbag Sensor Assembly RH
    2. Interchange the side No. 2 airbag sensor assembly RH with LH 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 [10/2014 - ] ).
    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 [10/2014 - ] ).

      Result

      Result Proceed to
      DTC B1630/23 is output. A
      DTC B1635/24 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 RH and LH to their original positions and connect the connectors.

    Result: 

    B 

    REPLACE SIDE NO. 2 AIRBAG SENSOR ASSEMBLY RH 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

    Result: 

    A 

    See step  11

  11. CHECK SIDE AIRBAG SENSOR ASSEMBLY RH 
    1. Interchange the side airbag sensor assembly RH with LH and connect the connectors.
      GTY583461Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Side Airbag Sensor Assembly LH
      *2 Airbag ECU Assembly
    2. Connect the cable to the negative (-) battery terminal.
    3. Clear the DTCs stored in memory (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
    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 [10/2014 - ] ).

      Result

      Result Proceed to
      DTC B1630/23 is output. A
      DTC B1635/24 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 RH and LH to their original positions and connect the connectors.

    Result: 

    B 

    REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

    Result: 

    A 

    See step  12

  12. CHECK DOOR SIDE AIRBAG SENSOR RH 
    1. Disconnect the connector from the door side airbag sensor RH.
      GTY594786Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor RH
      *2 Side No. 2 Airbag Sensor Assembly RH
    2. Connect the cable to the negative (-) battery terminal.
    3. Clear the DTCs stored in memory (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
    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 [10/2014 - ] ).

      OK

      DTC B1630/23 is not output.

      HINT: 

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

    Result: 

    OK 

    REPLACE DOOR SIDE AIRBAG SENSOR RH 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    NG 

    REPLACE AIRBAG ECU ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

  13. CHECK FRONT DOOR WIRE RH (OPEN) 
    1. Disconnect the front door wire RH connector from the No. 2 floor wire.
      GTY550283Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

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

      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
      FK1-1 (BDR+) - FK1-2 (BDR-) Always Below 1 Ω
    3. Disconnect the service wire from connector E.

    Result: 

    OK 

    REPLACE NO. 2 FLOOR WIRE 

    Result: 

    NG 

    REPLACE FRONT DOOR WIRE RH 

  14. CHECK FRONT DOOR WIRE RH (SHORT) 
    1. Disconnect the front door wire RH connector from the No. 2 floor wire.
      GTY557568Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor RH
      *2 Side No. 2 Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 No. 2 Floor Wire
      *a Front view of wire harness connector
      (to No. 2 Floor Wire)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      FK1-1 (BDR+) - FK1-2 (BDR-) Always 1 MΩ or higher

    Result: 

    OK 

    REPLACE NO. 2 FLOOR WIRE 

    Result: 

    NG 

    REPLACE FRONT DOOR WIRE RH 

  15. CHECK FRONT DOOR WIRE RH (SHORT TO B+) 
    1. Disconnect the front door wire RH connector from the No. 2 floor wire.
      GTY557568Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor RH
      *2 Side No. 2 Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 No. 2 Floor Wire
      *a Front view of wire harness connector
      (to No. 2 Floor Wire)
    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
      FK1-1 (BDR+) - Body ground Engine switch on (IG) Below 1 V
      FK1-2 (BDR-) - Body ground Engine switch on (IG) Below 1 V

    Result: 

    OK 

    REPLACE NO. 2 FLOOR WIRE 

    Result: 

    NG 

    REPLACE FRONT DOOR WIRE RH 

  16. CHECK FRONT DOOR WIRE RH (SHORT TO GROUND) 
    1. Disconnect the front door wire RH connector from the No. 2 floor wire.
      GTY557568Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor RH
      *2 Side No. 2 Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 No. 2 Floor Wire
      *a Front view of wire harness connector
      (to No. 2 Floor Wire)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      FK1-1 (BDR+) - Body ground Always 1 MΩ or higher
      FK1-2 (BDR-) - Body ground Always 1 MΩ or higher

    Result: 

    OK 

    REPLACE NO. 2 FLOOR WIRE 

    Result: 

    NG 

    REPLACE FRONT DOOR WIRE RH 

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