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Home >> Toyota >> 2015 >> Yaris LE, 4D Hatchback >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - (Diagnostic Codes (B1000/31- B1655/37)) >> AIRBAG SYSTEM (for Hatchback) >> DTC B1638/82: Rear Airbag Sensor Assembly LH Initialization Incomplete [07/2014 - ] >> Procedure

DTC B1638/82: Rear Airbag Sensor Assembly LH Initialization Incomplete [07/2014 - ]: Procedure

  1. CHECK HISTORY DTC 
    1. Turn the ignition switch to ON, and wait for at least 60 seconds.
    2. Check for history DTCs. Refer to DTC CHECK / CLEAR [07/2014 - ] .

      OK

      History DTC B1632/81 or B1637/82 is not output.

      HINT: 

      Codes other than history DTCs B1632/81 and B1637/82 may be output at this time, but they are not related to this check.

    NG → See step   22 

    OK: Go to next step 

  2. CHECK CONNECTORS 
    1. Turn the ignition 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 airbag sensor assembly, door side airbag sensor LH and No. 2 side airbag sensor assembly LH.

      OK

      The connectors are properly connected.

      HINT: 

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

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

      OK

      The terminals are not deformed or damaged.

    NG → REPLACE WIRE HARNESS 

    OK: Go to next step 

  3. CHECK FLOOR WIRE (OPEN) 
    1. Using the service wire, connect terminals 3 (BCL-) and 4 (BCL+) of connector C.
      GTY330860Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 No. 2 Side Airbag Sensor Assembly LH *2 Side Airbag Sensor Assembly LH
      *3 Floor Wire *4 Connector B
      *5 Connector C *6 Service Wire
      *a Front view of wire harness connector
      (to Side Airbag Sensor Assembly LH)      		 *b Front view of wire harness connector
      (to No. 2 Side Airbag Sensor Assembly LH)
      NOTE:

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      J73-2 (BCL-) - J73-1 (BCL+) Always Below 1 Ω

    NG → REPLACE FLOOR WIRE 

    OK: Go to next step 

  4. CHECK FLOOR WIRE (SHORT) 
    1. Disconnect the service wire from connector C.
      GTY328905Courtesy 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
      J73-1 (BCL+) - J73-2 (BCL-) Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

      *1 No. 2 Side Airbag Sensor Assembly LH
      *2 Side Airbag Sensor Assembly LH
      *3 Floor Wire
      *4 Connector B
      *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 B+) 
    1. Connect the cable to the negative (-) battery terminal.
      GTY328905Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      J73-1 (BCL+) - Body ground Ignition switch ON Below 1 V
      J73-2 (BCL-) - Body ground Ignition switch ON Below 1 V
      TEXT IN ILLUSTRATION

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

    NG → REPLACE FLOOR WIRE 

    OK: Go to next step 

  6. CHECK FLOOR WIRE (SHORT TO GROUND) 
    1. Turn the ignition switch off.
      GTY328905Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J73-1 (BCL+) - Body ground Always 1 MΩ or higher
      J73-2 (BCL-) - Body ground Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

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

    NG → REPLACE FLOOR WIRE 

    OK: Go to next step 

  7. CHECK FLOOR WIRE AND FRONT DOOR WIRE LH (OPEN) 
    1. Using the service wire, connect terminals 2 (BDL+) and 1 (BDL-) of connector E.
      GTY331624Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH *2 No. 2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH *4 Floor Wire
      *5 Connector B *6 Connector E
      *7 Service Wire - -
      *a Front view of wire harness connector
      (to No. 2 Side Airbag Sensor Assembly LH)      		 *b Front view of wire harness connector
      (to Door Side Airbag Sensor LH)
      NOTE:

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      J75-1 (BDL+) - J75-2 (BDL-) Always Below 1 Ω

    NG → See step   14 

    OK: Go to next step 

  8. CHECK FLOOR WIRE AND FRONT DOOR WIRE LH (SHORT) 
    1. Disconnect the service wire from connector E.
      GTY325191Courtesy 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
      J75-1 (BDL+) - J75-2 (BDL-) Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

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

    NG → See step   15 

    OK: Go to next step 

  9. CHECK FLOOR WIRE AND FRONT DOOR WIRE LH (SHORT TO B+) 
    1. Connect the cable to the negative (-) battery terminal.
      GTY325191Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      J75-1 (BDL+) - Body ground Ignition switch ON Below 1 V
      J75-2 (BDL-) - Body ground Ignition switch ON Below 1 V
      TEXT IN ILLUSTRATION

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

    NG → See step   16 

    OK: Go to next step 

  10. CHECK FLOOR WIRE AND FRONT DOOR WIRE LH (SHORT TO GROUND) 
    1. Turn the ignition switch off.
      GTY325191Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J75-1 (BDL+) - Body ground Always 1 MΩ or higher
      J75-2 (BDL-) - Body ground Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

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

    NG → See step   17 

    OK: Go to next step 

  11. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH 
    1. Connect the connectors to the door side airbag sensor LH and airbag sensor assembly.
      GTY340792Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Interchange the side airbag sensor assembly LH with the side airbag sensor assembly RH and connect the connectors to them.
    3. Connect the cable to the negative (-) battery terminal.
    4. Turn the ignition switch to ON, and wait for at least 60 seconds.
    5. Clear the DTCs stored in the memory. Refer to DTC CHECK / CLEAR [07/2014 - ] .
    6. Turn the ignition switch off.
    7. Turn the ignition switch to ON, and wait for at least 60 seconds.
    8. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2014 - ] .
      RESULT

      Result Proceed to
      DTC B1638/82 is output. A
      DTC B1633/81 is output.
      (for 5 Door)      		 B
      DTC B1633/81 is output.
      (for 3 Door)      		 C
      DTC B1633/81 or B1638/82 is not output. D
      TEXT IN ILLUSTRATION

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

      HINT: 

      Codes other than DTCs B1633/81 and B1638/82 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.
    10. 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.

    11. Return the side airbag sensor assembly LH and the side airbag sensor assembly RH to their original positions and connect the connectors to them.

    B → See step   21 

    C → See step   24 

    D → See step   18 

    A: Go to next step 

  12. CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH 
    1. Connect the connectors to the door side airbag sensor LH and airbag sensor assembly.
      GTY335198Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Interchange the No. 2 side airbag sensor assembly LH with the No. 2 side airbag sensor assembly RH and connect the connectors to them.
    3. Connect the cable to the negative (-) battery terminal.
    4. Turn the ignition switch to ON, and wait for at least 60 seconds.
    5. Clear the DTCs stored in the memory. Refer to DTC CHECK / CLEAR [07/2014 - ] .
    6. Turn the ignition switch off.
    7. Turn the ignition switch to ON, and wait for at least 60 seconds.
    8. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2014 - ] .
      RESULT

      Result Proceed to
      DTC B1638/82 is output. A
      DTC B1633/81 is output.
      (for 5 Door)      		 B
      DTC B1633/81 is output.
      (for 3 Door)      		 C
      DTC B1633/81 or B1638/82 is not output. D
      TEXT IN ILLUSTRATION

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

      HINT: 

      Codes other than DTCs B1633/81 and B1638/82 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.
    10. 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.

    11. Return the No. 2 side airbag sensor assembly LH and the No. 2 side airbag sensor assembly RH to their original positions and connect the connectors to them.

    B → See step   23 

    C → See step   25 

    D → See step   18 

    A: Go to next step 

  13. CHECK DOOR SIDE AIRBAG SENSOR LH 
    1. Interchange the door side airbag sensor LH with the door side airbag sensor RH and connect the connectors to them.
      GTY329243Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the cable to the negative (-) battery terminal.
    3. Turn the ignition switch to ON, and wait for at least 60 seconds.
    4. Clear the DTCs stored in the memory. Refer to DTC CHECK / CLEAR [07/2014 - ] .
    5. Turn the ignition switch off.
    6. Turn the ignition switch to ON, and wait for at least 60 seconds.
    7. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2014 - ] .
      RESULT

      Result Proceed to
      DTC B1633/81 or B1638/82 is not output. A
      DTC B1638/82 is output. B
      DTC B1633/81 is output. C
      TEXT IN ILLUSTRATION

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

      HINT: 

      Codes other than DTCs B1633/81 and B1638/82 may be output at this time, but they are not related to this check.

    8. Turn the ignition 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 door side airbag sensor LH and the door side airbag sensor RH to their original positions and connect the connectors to them.

    B → See step   20 

    C → See step   19 

    A → See step   18 

  14. CHECK FRONT DOOR WIRE LH (OPEN) 
    1. Disconnect the floor wire connector from the front door wire LH.
      GTY325048Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH *2 No. 2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH *4 Floor Wire
      *5 Connector D *6 Connector E
      *7 Service Wire - -
      *a Front view of wire harness connector
      (to Floor Wire)      		 *b Front view of wire harness connector
      (to Door Side Airbag Sensor Assembly LH)

      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.

    NG → REPLACE FRONT DOOR WIRE LH 

    OK → REPLACE FLOOR WIRE 

  15. CHECK FRONT DOOR WIRE LH (SHORT) 
    1. Disconnect the floor wire connector from the front door wire LH.
      GTY335697Courtesy 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 No. 2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Connector D
      *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 B+) 
    1. Turn the ignition switch off.
    2. Disconnect the cable from the negative (-) battery terminal.
      GTY335697Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WARNING:

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

    3. Disconnect the front door wire connector from the floor wire.
    4. Connect the cable to the negative (-) battery terminal.
    5. Turn the ignition switch to ON.
    6. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      GJ1-1 (BDL+) - Body ground Ignition switch ON Below 1 V
      GJ1-2 (BDL-) - Body ground Ignition switch ON Below 1 V
      TEXT IN ILLUSTRATION

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

    NG → REPLACE FRONT DOOR WIRE LH 

    OK → REPLACE FLOOR WIRE 

  17. CHECK FRONT DOOR WIRE LH (SHORT TO GROUND) 
    1. Disconnect the front door wire connector from the floor wire.
      GTY335697Courtesy 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 No. 2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Connector D
      *a Front view of wire harness connector
      (to Floor Wire)

    NG → REPLACE FRONT DOOR WIRE LH 

    OK → REPLACE FLOOR WIRE 

  18. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2014 - ] 
  19. REPLACE DOOR SIDE AIRBAG SENSOR LH. Refer to  REMOVAL [07/2014 - ] 
  20. REPLACE AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL [07/2014 - ] 
  21. REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH. Refer to  REMOVAL [07/2014 - ] 
  22. INSPECTION PROCEDURE RELEVANT TO OUTPUT DTC. Refer to  DIAGNOSTIC TROUBLE CODE CHART [07/2014 - ] 
  23. REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH. Refer to  REMOVAL [07/2014 - ] 
  24. REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH. Refer to  REMOVAL [07/2014 - ] 
  25. REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH. Refer to  REMOVAL [07/2014 - ] 
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