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Home >> Scion >> 2015 >> iQ >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes (B1000/31 - B1692/81)) >> Airbag System >> DTC B1628/82: Side Airbag Sensor Assembly LH Initialization Incomplete [08/2014 - ] >> Procedure

DTC B1628/82: Side Airbag Sensor Assembly LH Initialization Incomplete [08/2014 - ]: Procedure

  1. CHECK PAST DTC 
    1. Turn the ignition switch to ON, and wait for at least 60 seconds.
    2. Turn the ignition switch off.
    3. Turn the ignition switch to ON, and wait for at least 60 seconds.
    4. Check the past DTCs. Refer to DTC CHECK / CLEAR [08/2014 - ] .
      RESULT

      Result Proceed to
      DTC B1622/81 is output A
      DTC B1627/82 is output B
      DTC B1622/81 and B1627/82 are not output C

    A → See step   10 

    B → See step   11 

    C: Go to next step 

  2. CHECK CONNECTION OF CONNECTORS 
    1. Turn the ignition switch off.
    2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
    3. Check that the connectors are properly connected to the center airbag sensor assembly and side airbag sensor LH (for front side).

      OK

      The connectors are properly connected.

    NG → CONNECT CONNECTORS PROPERLY 

    OK: Go to next step 

  3. CHECK CONNECTORS 
    1. Disconnect the connectors from the center airbag sensor assembly and side airbag sensor LH (for front side).
    2. Check that the connectors (on the center airbag sensor assembly side and side airbag sensor LH (for front side) side) are not damaged.

      OK

      The connectors are not deformed or damaged.

    NG → REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  4. CHECK SIDE AIRBAG SENSOR LH (FOR FRONT SIDE) 
    1. Interchange the side airbag sensor LH (for front side) with side airbag sensor RH (for front side) and connect the connectors to them.
      GTY344589Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
    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 [08/2014 - ] .
    5. Turn the ignition switch off.
    6. Turn the ignition switch to ON, and wait for at least 90 seconds.
    7. Check for DTCs. Refer to DTC CHECK / CLEAR [08/2014 - ] .
      RESULT

      Result Proceed to
      DTC B1623/81 is output A
      DTC B1623/81 and B1628/82 are not output B
      DTC B1628/82 is output C
      TEXT IN ILLUSTRATION

      *1 Side Airbag Sensor RH (for Front Side)
      *2 Center Airbag Sensor Assembly
    8. Turn the ignition switch off.
    9. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    10. Return the side airbag sensor LH (for front side) and side airbag sensor RH (for front side) to their original positions and connect the connectors to them.

    A → See step   12 

    B → See step   13 

    C: Go to next step 

  5. CHECK SIDE AIRBAG SENSOR LH (FOR REAR SIDE) CIRCUIT 
    GTY345262Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEXT IN ILLUSTRATION

    *1 Side Airbag Sensor LH (for Front Side) *2 Side Airbag Sensor LH (for Rear Side)
    *3 Connector E *4 Connector B
    *5 Service Wire - -
    *a Rear view of wire harness connector
    (to Side Airbag Sensor LH (for Front Side))    		 *b Rear view of wire harness connector
    (to Side Airbag Sensor LH (for Rear Side))
    1. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
    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
      G17-4 (BCL+) - Body ground Ignition switch ON Below 1 V
      G17-3 (BCL-) - Body ground Ignition switch ON Below 1 V
    4. Turn the ignition switch off.
    5. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
    6. Using a service wire, connect terminals 1 and 2 of connector E.
      NOTE:

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      G17-4 (BCL+) - G17-3 (BCL-) Always Below 1 Ω
    8. Disconnect the service wire from connector E.
    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G17-4 (BCL+) - G17-3 (BCL-) Always 1 MΩ or higher
      G17-4 (BCL+) - Body ground Always 1 MΩ or higher
      G17-3 (BCL-) - Body ground Always 1 MΩ or higher

    NG → See step   9 

    OK: Go to next step 

  6. CHECK REAR AIRBAG SENSOR LH CIRCUIT (SIDE AIRBAG SENSOR LH (FOR REAR SIDE) - REAR AIRBAG SENSOR LH) 
    GTY345572Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEXT IN ILLUSTRATION

    *1 Rear Airbag Sensor LH *2 Side Airbag Sensor LH (for Rear Side)
    *3 Floor Wire *4 Connector C
    *5 Connector B *6 Service Wire
    *a Front view of wire harness connector
    (to Rear Airbag Sensor LH)    		 *b Rear view of wire harness connector
    (to Side Airbag Sensor LH (for Rear Side))
    1. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
    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
      G17-1 (BDL+) - Body ground Ignition switch ON Below 1 V
      G17-2 (BDL-) - Body ground Ignition switch ON Below 1 V
    4. Turn the ignition switch off.
    5. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
    6. Using a service wire, connect terminals 2 and 1 of connector C.
      NOTE:

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      G17-1 (BDL+) - G17-2 (BDL-) Always Below 1 Ω
    8. Disconnect the service wire from connector C.
    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G17-1 (BDL+) - G17-2 (BDL-) Always 1 MΩ or higher
      G17-1 (BDL+) - Body ground Always 1 MΩ or higher
      G17-2 (BDL-) - Body ground Always 1 MΩ or higher

    NG → REPLACE FLOOR WIRE 

    OK: Go to next step 

  7. CHECK SIDE AIRBAG SENSOR LH (FOR REAR SIDE) 
    GTY345711Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Interchange the side airbag sensor LH (for rear side) with side airbag sensor RH (for rear side) and connect the connectors to them.
    2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
    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 [08/2014 - ] .
    5. Turn the ignition switch off.
    6. Turn the ignition switch to ON, and wait for at least 90 seconds.
    7. Check for DTCs. Refer to DTC CHECK / CLEAR [08/2014 - ] .
      RESULT

      Result Proceed to
      DTC B1623/81 is output A
      DTC B1623/81 and B1628/82 are not output B
      DTC B1628/82 is output C
      TEXT IN ILLUSTRATION

      *1 Side Airbag Sensor RH (for Rear Side)
      *2 Side Airbag Sensor LH (for Front Side)
    8. Turn the ignition switch off.
    9. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    10. Return the side airbag sensor LH (for rear side) and side airbag sensor RH (for rear side) to their original positions and connect the connectors to them.

    A → See step   16 

    B → See step   13 

    C: Go to next step 

  8. CHECK REAR AIRBAG SENSOR LH 
    GTY345768Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Interchange the rear airbag sensor LH with the rear airbag sensor RH and connect the connectors to them.
    2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
    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 [08/2014 - ] .
    5. Turn the ignition switch off.
    6. Turn the ignition switch to ON, and wait for at least 90 seconds.
    7. Check for DTCs. Refer to DTC CHECK / CLEAR [08/2014 - ] .
      RESULT

      Result Proceed to
      DTC B1628/82 is output A
      DTC B1623/81 is output B
      DTC B1623/81 and B1628/82 are not output C
      TEXT IN ILLUSTRATION

      *1 Rear Airbag Sensor RH
      *2 Side Airbag Sensor LH (for Rear Side)

      HINT: 

      DTCs other than B1623/81 and B1628/82 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, and wait for at least 90 seconds.
    10. Return the rear airbag sensor LH and the rear airbag sensor RH to their original positions and connect the connectors to them.

    A → See step   15 

    B → See step   14 

    C → See step   13 

  9. CHECK FLOOR WIRE (SIDE AIRBAG SENSOR LH (REAR SIDE) - FRONT DOOR WIRE LH) 
    GTY346049Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEXT IN ILLUSTRATION

    *1 Side Airbag Sensor LH (for Front Side) *2 Side Airbag Sensor LH (for Rear Side)
    *3 Front Door Wire LH *4 Floor Wire
    *5 Connector C *6 Connector B
    *7 Service Wire - -
    *a Front view of wire harness connector
    (to Front Door Wire LH)    		 *b Rear view of wire harness connector
    (to Side Airbag Sensor LH (for Rear Side))
    1. Disconnect the floor wire connector from the front door wire LH.
    2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
    3. Turn the ignition switch to ON.
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      FG1-3 (BCL+) - Body ground Ignition switch ON Below 1 V
      FG1-4 (BCL-) - Body ground Ignition switch ON Below 1 V
    5. Turn the ignition switch off.
    6. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
    7. Using a service wire, connect terminals 3 and 4 of connector B.
      NOTE:

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      FG1-3 (BCL+) - FG1-4 (BCL-) Always Below 1 Ω
    9. Disconnect the service wire from connector B.
    10. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      FG1-3 (BCL+) - FG1-4 (BCL-) Always 1 MΩ or higher
      FG1-3 (BCL+) - Body ground Always 1 MΩ or higher
      FG1-4 (BCL-) - Body ground Always 1 MΩ or higher

    NG → REPLACE FLOOR WIRE 

    OK → REPLACE FRONT DOOR WIRE LH 

  10. GO TO DTC B1622/81. Refer to  DTC B1620/21: Side Airbag Sensor RH Circuit Malfunction; DTC B1622/81: Lost communication with Side Airbag Sensor RH [08/2014 - ]  
  11. GO TO DTC B1627/82. Refer to  DTC B1625/22: Side Airbag Sensor LH Circuit Malfunction; DTC B1627/82: Lost communication with Side Airbag Sensor LH [08/2014 - ]  
  12. REPLACE SIDE AIRBAG SENSOR LH (FOR FRONT SIDE). Refer to  REMOVAL [08/2014 - ] 
  13. USE SIMULATION METHOD TO CHECK. Refer to  DIAGNOSIS SYSTEM [08/2014 - ] 
  14. REPLACE REAR AIRBAG SENSOR LH. Refer to  REMOVAL [08/2014 - ] 
  15. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL [08/2014 - ] 
  16. REPLACE SIDE AIRBAG SENSOR LH (FOR REAR SIDE). Refer to  REMOVAL [08/2014 - ] 
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