AIRBAG SYSTEM, Diagnostic DTC:B1642/81, B1643/81, B1647/82, B1648/82

DTC Code DTC Name
B1642/81 Lost Communication with Side Satellite Sensor Bus RH
B1643/81 Side Satellite Sensor Bus RH Initialization Incomplete
B1647/82 Lost Communication with Side Satellite Sensor Bus LH
B1648/82 Side Satellite Sensor Bus LH Initialization Incomplete

DESCRIPTION

The circuit for the side collision sensor LH or RH is composed of the airbag ECU assembly, door side airbag sensor LH or RH, rear airbag sensor LH or RH and No. 2 side airbag sensor assembly LH or RH.

The No. 2 side airbag sensor assembly LH or RH, rear airbag sensor LH or RH and door side airbag sensor LH or RH detect impacts to the vehicle and send signals to the airbag ECU assembly to determine if the airbag should be deployed.

DTC B1642/81, B1643/81, B1647/82 or B1648/82 is stored when a malfunction is detected in the circuit for the side satellite sensor bus LH or RH.

DTC No. Detection Item DTC Detection Condition Trouble Area
B1642/81 Lost Communication with Side Satellite Sensor Bus RH

One of the following conditions is met:


  • The airbag ECU assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the side satellite sensor bus RH for 2 seconds.

  • A No. 2 side airbag sensor assembly RH malfunction.

  • A rear airbag sensor RH malfunction.

  • A door side airbag sensor RH malfunction.

  • An airbag ECU assembly malfunction.

  • Front door wire RH

  • No. 2 floor wire

  • Rear door wire RH

  • Door side airbag sensor RH

  • Rear airbag sensor RH

  • No. 2 side airbag sensor assembly RH

  • Airbag ECU assembly
B1643/81 Side Satellite Sensor Bus RH Initialization Incomplete

One of the following conditions is met:


  • The airbag ECU assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the side satellite sensor bus RH for 2 seconds.

  • A No. 2 side airbag sensor assembly RH malfunction.

  • A rear airbag sensor RH malfunction.

  • A door side airbag sensor RH malfunction.

  • An airbag ECU assembly malfunction.

  • Front door wire RH

  • No. 2 floor wire

  • Rear door wire RH

  • Door side airbag sensor RH

  • Rear airbag sensor RH

  • No. 2 side airbag sensor assembly RH

  • Airbag ECU assembly
B1647/82 Lost Communication with Side Satellite Sensor Bus LH

One of the following conditions is met:


  • The airbag ECU assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the side satellite sensor bus LH for 2 seconds.

  • A No. 2 side airbag sensor assembly LH malfunction.

  • A rear airbag sensor LH malfunction.

  • A door side airbag sensor LH malfunction.

  • An airbag ECU assembly malfunction.

  • Front door wire LH

  • Floor wire

  • Rear door wire LH

  • Door side airbag sensor LH

  • Rear airbag sensor LH

  • No. 2 side airbag sensor assembly LH

  • Airbag ECU assembly
B1648/82 Side Satellite Sensor Bus LH Initialization Incomplete

One of the following conditions is met:


  • The airbag ECU assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the side satellite sensor bus LH for 2 seconds.

  • A No. 2 side airbag sensor assembly LH malfunction.

  • A rear airbag sensor LH malfunction.

  • A door side airbag sensor LH malfunction.

  • An airbag ECU assembly malfunction.

  • Front door wire LH

  • Floor wire

  • Rear door wire LH

  • Door side airbag sensor LH

  • Rear airbag sensor LH

  • No. 2 side airbag sensor assembly LH

  • Airbag ECU assembly

WIRING DIAGRAM

Figure 1. for RH

B006QG2E09
*a Door Side Airbag Sensor RH
*b No. 2 Side Airbag Sensor Assembly RH
*c Rear Airbag Sensor RH
*d Airbag ECU Assembly

Figure 2. for LH

B006QG2E11
*a Door Side Airbag Sensor LH
*b No. 2 Side Airbag Sensor Assembly LH
*c Rear Airbag Sensor LH
*d Airbag ECU Assembly

CAUTION / NOTICE / HINT

Note


  • After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

  • When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected.

    Click here

  • After replacing the airbag ECU assembly, refer to initialization.

    Click here

PROCEDURE


  1. CHECK DTC


    1. Turn the engine switch off.

    2. Turn the engine switch on (IG), and wait for at least 60 seconds.

    3. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B1642/81 or B1643/81 is output
      DTC B1647/82 or B1648/82 is output
      DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

      Tech Tips

      Codes other than DTC B1642/81, B1643/81, B1647/82 and B1648/82 may be output at this time, but they are not related to this check.


    DTC B1647/82 or B1648/82 is output

    CHECK CONNECTION OF CONNECTORS Click here

    DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

    USE SIMULATION METHOD TO CHECK Click here

    DTC B1642/81 or B1643/81 is output

  2. CHECK CONNECTION OF CONNECTORS


    1. Turn the engine switch off.

    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

    3. Check that the connectors are properly connected to the airbag ECU assembly and door side airbag sensor RH.

      Result
      Proceed to
      The connectors are properly connected
      The connectors are not properly connected

    The connectors are not properly connected

    CONNECT CONNECTORS PROPERLY

    The connectors are properly connected

  3. CHECK CONNECTORS


    1. Disconnect the connectors from the airbag ECU assembly and door side airbag sensor RH.

    2. B006LIJC03
      *1 Door Side Airbag Sensor RH
      *2 Airbag ECU Assembly
      *3 Front Door Wire RH
      *4 No. 2 Floor Wire

      Check that the connectors (on the airbag ECU assembly side and door side airbag sensor RH side) are not damaged.

      Result
      Proceed to
      The connectors are not deformed or damaged
      The connectors are deformed or damaged

    The connectors are deformed or damaged

    REPLACE FRONT DOOR WIRE RH OR NO. 2 FLOOR WIRE

    The connectors are not deformed or damaged

  4. CHECK DOOR SIDE AIRBAG SENSOR RH CIRCUIT


    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

      B006O7YC01
      *1 Door Side Airbag Sensor RH *2 Airbag ECU Assembly
      *3 Front Door Wire RH *4 No. 2 Floor Wire
      *5 Connector E *6 Connector B
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to Door Side Airbag Sensor RH)

      		 *b

      Rear view of wire harness connector

      (to Airbag ECU Assembly)

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      I14-4 (BBR+) - Body ground Engine switch on (IG) Below 1 V
      I14-3 (BBR-) - Body ground Engine switch on (IG) Below 1 V

    4. Turn the engine switch off.

    5. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

    6. Using a service wire, connect terminals 17 (BBR+) and 18 (BBR-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I14-4 (BBR+) - I14-3 (BBR-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I14-4 (BBR+) - I14-3 (BBR-) Always 1 MΩ or higher
      I14-4 (BBR+) - Body ground Always 1 MΩ or higher
      I14-3 (BBR-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK NO. 2 FLOOR WIRE Click here

    OK

  5. CHECK DOOR SIDE AIRBAG SENSOR RH


    1. B006QXJC05
      *1 Door Side Airbag Sensor LH
      *2 Airbag ECU Assembly

      Connect the connectors to the airbag ECU assembly.

    2. Interchange the door side airbag sensor RH and LH, and connect the connectors to them.

    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

    4. Turn the engine switch on (IG), and wait for at least 60 seconds.

    5. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    6. Turn the engine switch off.

    7. Turn the engine switch on (IG), and wait for at least 60 seconds.

    8. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B1642/81 or B1643/81 is output
      DTC B1647/82 or B1648/82 is output
      DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

      Tech Tips

      Codes other than DTC B1642/81, B1643/81, B1647/82 and B1648/82 may be output at this time, but they are not related to this check.

    9. Turn the engine switch off.

    10. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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


    DTC B1647/82 or B1648/82 is output

    REPLACE DOOR SIDE AIRBAG SENSOR RH Click here

    DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

    USE SIMULATION METHOD TO CHECK Click here

    DTC B1642/81 or B1643/81 is output

  6. CHECK CONNECTION OF CONNECTOR


    1. Check that the connector is properly connected to the rear airbag sensor RH.

      Result
      Proceed to
      The connector is properly connected
      The connector is not properly connected

    The connector is not properly connected

    CONNECT CONNECTOR PROPERLY

    The connector is properly connected

  7. CHECK CONNECTOR


    1. Disconnect the connector from the door side airbag sensor RH and rear airbag sensor RH.

    2. B006M3OC07
      *1 Rear Airbag Sensor RH
      *2 Door Side Airbag Sensor RH
      *3 No. 2 Floor Wire
      *4 Front Door Wire RH

      Check that the connector (on the rear airbag sensor RH side) is not damaged.

      Result
      Proceed to
      The connector is not deformed or damaged
      The connector is deformed or damaged

    The connector is deformed or damaged

    REPLACE NO. 2 FLOOR WIRE

    The connector is not deformed or damaged

  8. CHECK REAR AIRBAG SENSOR RH CIRCUIT


    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

      B006MMDC01
      *1 Rear Airbag Sensor RH *2 Door Side Airbag Sensor RH
      *3 No. 2 Floor Wire *4 Front Door Wire RH
      *5 Connector E *6 Connector B
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

      		 *b

      Front view of wire harness connector

      (to Door Side Airbag Sensor 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 Switch Condition Specified Condition
      L14-4 (BCR+) - Body ground Engine switch on (IG) Below 1 V
      L14-3 (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, and wait for at least 90 seconds.

    6. Using a service wire, connect terminals 1 (BCR+) and 2 (BCR-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L14-4 (BCR+) - L14-3 (BCR-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L14-4 (BCR+) - L14-3 (BCR-) Always 1 MΩ or higher
      L14-4 (BCR+) - Body ground Always 1 MΩ or higher
      L14-3 (BCR-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK FRONT DOOR WIRE RH Click here

    OK

  9. CHECK REAR AIRBAG SENSOR RH


    1. B006P0FC37
      *1 Rear Airbag Sensor LH
      *2 Door Side Airbag Sensor RH

      Connect the connectors to the door side airbag sensor RH.

    2. Interchange the rear airbag sensor RH and LH, and connect the connectors to them.

    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

    4. Turn the engine switch on (IG), and wait for at least 60 seconds.

    5. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    6. Turn the engine switch off.

    7. Turn the engine switch on (IG), and wait for at least 60 seconds.

    8. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B1642/81 or B1643/81 is output
      DTC B1647/82 or B1648/82 is output
      DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

      Tech Tips

      Codes other than DTC B1642/81, B1643/81, B1647/82 and B1648/82 may be output at this time, but they are not related to this check.

    9. Turn the engine switch off.

    10. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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


    DTC B1647/82 or B1648/82 is output

    REPLACE REAR AIRBAG SENSOR RH Click here

    DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

    USE SIMULATION METHOD TO CHECK Click here

    DTC B1642/81 or B1643/81 is output

  10. CHECK CONNECTION OF CONNECTOR


    1. Check that the connector is properly connected to the No. 2 side airbag sensor assembly RH.

      Result
      Proceed to
      The connector is properly connected
      The connector is not properly connected

    The connector is not properly connected

    CONNECT CONNECTOR PROPERLY

    The connector is properly connected

  11. CHECK CONNECTOR


    1. Disconnect the connector from the No. 2 side airbag sensor assembly RH and rear airbag sensor RH.

    2. B006M3OC07
      *1 No. 2 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor RH
      *3 Rear Door Wire RH
      *4 No. 2 Floor Wire

      Check that the connector (on the No. 2 side airbag sensor assembly RH side) is not damaged.

      Result
      Proceed to
      The connector is not deformed or damaged
      The connector is deformed or damaged

    The connector is deformed or damaged

    REPLACE REAR DOOR WIRE RH

    The connector is not deformed or damaged

  12. CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH


    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

      B006LUMC02
      *1 No. 2 Side Airbag Sensor Assembly RH *2 Rear Airbag Sensor RH
      *3 Rear Door Wire RH *4 No. 2 Floor Wire
      *5 Connector E *6 Connector B
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)

      		 *b

      Front view of wire harness connector

      (to Rear Airbag Sensor 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 Switch Condition Specified Condition
      J9-2 (BDR+) - Body ground Engine switch on (IG) Below 1 V
      J9-1 (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, and wait for at least 90 seconds.

    6. Using a service wire, connect terminals 1 (BDR+) and 2 (BDR-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J9-2 (BDR+) - J9-1 (BDR-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J9-2 (BDR+) - J9-1 (BDR-) Always 1 MΩ or higher
      J9-2 (BDR+) - Body ground Always 1 MΩ or higher
      J9-1 (BDR-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK NO. 2 FLOOR WIRE Click here

    OK

  13. CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH


    1. B006P0FC37
      *1 No. 2 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor RH

      Connect the connectors to the rear airbag sensor RH.

    2. Interchange the No. 2 side airbag sensor assembly RH and LH, and connect the connectors to them.

    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

    4. Turn the engine switch on (IG), and wait for at least 60 seconds.

    5. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    6. Turn the engine switch off.

    7. Turn the engine switch on (IG), and wait for at least 60 seconds.

    8. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B1642/81 or B1643/81 is output
      DTC B1647/82 or B1648/82 is output
      DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

      Tech Tips

      Codes other than DTC B1642/81, B1643/81, B1647/82 and B1648/82 may be output at this time, but they are not related to this check.

    9. Turn the engine switch off.

    10. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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


    DTC B1642/81 or B1643/81 is output

    REPLACE AIRBAG ECU ASSEMBLY w/ Navigation System: REPLACE AIRBAG ECU ASSEMBLY Click here
    REPLACE AIRBAG ECU ASSEMBLY w/o Navigation System: REPLACE AIRBAG ECU ASSEMBLY Click here

    DTC B1647/82 or B1648/82 is output

    REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH Click here

    DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

    USE SIMULATION METHOD TO CHECK Click here

  14. CHECK NO. 2 FLOOR WIRE


    1. Disconnect the No. 2 floor wire connector from the front door wire RH.

      B006LWGC01
      *1 Door Side Airbag Sensor RH *2 Airbag ECU Assembly
      *3 Front Door Wire RH *4 No. 2 Floor Wire
      *5 Connector C *6 Connector B
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to Front Door Wire RH)

      		 *b

      Rear view of wire harness connector

      (to Airbag ECU Assembly)

    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

    3. Turn the engine switch on (IG).

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      IL1-2 (BBR+) - Body ground Engine switch on (IG) Below 1 V
      IL1-1 (BBR-) - Body ground Engine switch on (IG) Below 1 V

    5. Turn the engine switch off.

    6. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

    7. Using a service wire, connect terminals 17 (BBR+) and 18 (BBR-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      IL1-2 (BBR+) - IL1-1 (BBR-) 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
      IL1-2 (BBR+) - IL1-1 (BBR-) Always 1 MΩ or higher
      IL1-2 (BBR+) - Body ground Always 1 MΩ or higher
      IL1-1 (BBR-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT DOOR WIRE RH

    NG

    REPLACE NO. 2 FLOOR WIRE

  15. CHECK FRONT DOOR WIRE RH


    1. Disconnect the No. 2 floor wire connector from the front door wire RH.

      B006NCAC03
      *1 Rear Airbag Sensor RH *2 Door Side Airbag Sensor RH
      *3 No. 2 Floor Wire *4 Front Door Wire RH
      *5 Connector C *6 Connector B
      *7 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)

    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

    3. Turn the engine switch on (IG).

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      IL1-4 (BCR+) - Body ground Engine switch on (IG) Below 1 V
      IL1-3 (BCR-) - Body ground Engine switch on (IG) Below 1 V

    5. Turn the engine switch off.

    6. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

    7. Using a service wire, connect terminals 1 (BCR+) and 2 (BCR-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      IL1-4 (BCR+) - IL1-3 (BCR-) 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
      IL1-4 (BCR+) - IL1-3 (BCR-) Always 1 MΩ or higher
      IL1-4 (BCR+) - Body ground Always 1 MΩ or higher
      IL1-3 (BCR-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 2 FLOOR WIRE

    NG

    REPLACE FRONT DOOR WIRE RH

  16. CHECK NO. 2 FLOOR WIRE


    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

      B006LW1C01
      *1 No. 2 Side Airbag Sensor Assembly RH *2 Rear Airbag Sensor RH
      *3 Rear Door Wire RH *4 NO. 2 Floor Wire
      *5 Connector C *6 Connector B
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to Rear Door Wire RH)

      		 *b

      Front view of wire harness connector

      (to Rear Airbag Sensor 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 Switch Condition Specified Condition
      JL3-2 (BDR+) - Body ground Engine switch on (IG) Below 1 V
      JL3-1 (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, and wait for at least 90 seconds.

    6. Using a service wire, connect terminals 1 (BDR+) and 2 (BDR-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      JL3-2 (BDR+) - JL3-1 (BDR-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      JL3-2 (BDR+) - JL3-1 (BDR-) Always 1 MΩ or higher
      JL3-2 (BDR+) - Body ground Always 1 MΩ or higher
      JL3-1 (BDR-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR DOOR WIRE RH

    NG

    REPLACE NO. 2 FLOOR WIRE

  17. CHECK CONNECTION OF CONNECTORS


    1. Turn the engine switch off.

    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

    3. Check that the connectors are properly connected to the airbag ECU assembly and door side airbag sensor LH.

      Result
      Proceed to
      The connectors are properly connected
      The connectors are not properly connected

    The connectors are not properly connected

    CONNECT CONNECTORS PROPERLY

    The connectors are properly connected

  18. CHECK CONNECTORS


    1. Disconnect the connectors from the airbag ECU assembly and door side airbag sensor LH.

    2. B006P8AC01
      *1 Door Side Airbag Sensor LH
      *2 Airbag ECU Assembly
      *3 Front Door Wire LH
      *4 Floor Wire

      Check that the connectors (on the airbag ECU assembly side and door side airbag sensor LH side) are not damaged.

      Result
      Proceed to
      The connectors are not deformed or damaged
      The connectors are deformed or damaged

    The connectors are deformed or damaged

    REPLACE FRONT DOOR WIRE LH OR FLOOR WIRE

    The connectors are not deformed or damaged

  19. CHECK DOOR SIDE AIRBAG SENSOR LH CIRCUIT


    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

      B006P69C01
      *1 Door Side Airbag Sensor LH *2 Airbag ECU Assembly
      *3 Front Door Wire LH *4 Floor Wire
      *5 Connector E *6 Connector B
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to Door Side Airbag Sensor LH)

      		 *b

      Rear view of wire harness connector

      (to Airbag ECU Assembly)

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      I29-4 (BBL+) - Body ground Engine switch on (IG) Below 1 V
      I29-3 (BBL-) - Body ground Engine switch on (IG) Below 1 V

    4. Turn the engine switch off.

    5. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

    6. Using a service wire, connect terminals 24 (BBL+) and 23 (BBL-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I29-4 (BBL+) - I29-3 (BBL-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I29-4 (BBL+) - I29-3 (BBL-) Always 1 MΩ or higher
      I29-4 (BBL+) - Body ground Always 1 MΩ or higher
      I29-3 (BBL-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK FLOOR WIRE Click here

    OK

  20. CHECK DOOR SIDE AIRBAG SENSOR LH


    1. B006OB9C01
      *1 Door Side Airbag Sensor RH
      *2 Airbag ECU Assembly

      Connect the connectors to the airbag ECU assembly.

    2. Interchange the door side airbag sensor LH and RH, and connect the connectors to them.

    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

    4. Turn the engine switch on (IG), and wait for at least 60 seconds.

    5. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    6. Turn the engine switch off.

    7. Turn the engine switch on (IG), and wait for at least 60 seconds.

    8. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B1642/81 or B1643/81 is output
      DTC B1647/82 or B1648/82 is output
      DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

      Tech Tips

      Codes other than DTC B1642/81, B1643/81, B1647/82 and B1648/82 may be output at this time, but they are not related to this check.

    9. Turn the engine switch off.

    10. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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


    DTC B1642/81 or B1643/81 is output

    REPLACE DOOR SIDE AIRBAG SENSOR LH Click here

    DTC B1647/82 or B1648/82 is output

    CHECK CONNECTION OF CONNECTOR Click here

    DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

    USE SIMULATION METHOD TO CHECK Click here

  21. CHECK FLOOR WIRE


    1. Disconnect the floor wire connector from the front door wire LH.

      B006M6RC01
      *1 Door Side Airbag Sensor LH *2 Airbag ECU Assembly
      *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 Airbag ECU Assembly)

    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

    3. Turn the engine switch on (IG).

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      IK1-2 (BBL+) - Body ground Engine switch on (IG) Below 1 V
      IK1-1 (BBL-) - Body ground Engine switch on (IG) Below 1 V

    5. Turn the engine switch off.

    6. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

    7. Using a service wire, connect terminals 24 (BBL+) and 23 (BBL-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      IK1-2 (BBL+) - IK1-1 (BBL-) 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
      IK1-2 (BBL+) - IK1-1 (BBL-) Always 1 MΩ or higher
      IK1-2 (BBL+) - Body ground Always 1 MΩ or higher
      IK1-1 (BBL-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT DOOR WIRE LH

    NG

    REPLACE FLOOR WIRE

  22. CHECK CONNECTION OF CONNECTOR


    1. Check that the connector is properly connected to the rear airbag sensor LH.

      Result
      Proceed to
      The connector is properly connected
      The connector is not properly connected

    The connector is not properly connected

    CONNECT CONNECTOR PROPERLY

    The connector is properly connected

  23. CHECK CONNECTOR


    1. Disconnect the connector from the door side airbag sensor LH and rear airbag sensor LH.

    2. B006M3OC07
      *1 Rear Airbag Sensor LH
      *2 Door Side Airbag Sensor LH
      *3 Floor Wire
      *4 Front Door Wire LH

      Check that the connector (on the rear airbag sensor LH side) is not damaged.

      Result
      Proceed to
      The connector is not deformed or damaged
      The connector is deformed or damaged

    The connector is deformed or damaged

    REPLACE FRONT DOOR WIRE LH

    The connector is not deformed or damaged

  24. CHECK REAR AIRBAG SENSOR CIRCUIT


    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

      B006MMDC02
      *1 Rear Airbag Sensor LH *2 Door Side Airbag Sensor LH
      *3 Floor Wire *4 Front Door Wire LH
      *5 Connector E *6 Connector B
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)

      		 *b

      Front view of wire harness connector

      (to Door Side Airbag Sensor LH)

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      K23-4 (BCL+) - Body ground Engine switch on (IG) Below 1 V
      K23-3 (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, and wait for at least 90 seconds.

    6. Using a service wire, connect terminals 1 (BCL+) and 2 (BCL-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K23-4 (BCL+) - K23-3 (BCL-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K23-4 (BCL+) - K23-3 (BCL-) Always 1 MΩ or higher
      K23-4 (BCL+) - Body ground Always 1 MΩ or higher
      K23-3 (BCL-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK FRONT DOOR WIRE LH Click here

    OK

  25. CHECK REAR AIRBAG SENSOR LH


    1. B006P0FC38
      *1 Rear Airbag Sensor RH
      *2 Door Side Airbag Sensor LH

      Connect the connectors to the door side airbag sensor LH.

    2. Interchange the rear airbag sensor LH and RH, and connect the connectors to them.

    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

    4. Turn the engine switch on (IG), and wait for at least 60 seconds.

    5. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    6. Turn the engine switch off.

    7. Turn the engine switch on (IG), and wait for at least 60 seconds.

    8. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B1642/81 or B1643/81 is output
      DTC B1647/82 or B1648/82 is output
      DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

      Tech Tips

      Codes other than DTC B1642/81, B1643/81, B1647/82 and B1648/82 may be output at this time, but they are not related to this check.

    9. Turn the engine switch off.

    10. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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


    DTC B1642/81 or B1643/81 is output

    REPLACE REAR AIRBAG SENSOR LH Click here

    DTC B1647/82 or B1648/82 is output

    CHECK CONNECTION OF CONNECTOR Click here

    DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

    USE SIMULATION METHOD TO CHECK Click here

  26. CHECK FRONT DOOR WIRE LH


    1. Disconnect the floor wire connector from the front door wire LH.

      B006NCAC02
      *1 Rear Airbag Sensor LH *2 Door Side Airbag Sensor LH
      *3 Floor Wire *4 Front Door Wire LH
      *5 Connector C *6 Connector B
      *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 LH)

    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

    3. Turn the engine switch on (IG).

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      IK1-4 (BCL+) - Body ground Engine switch on (IG) Below 1 V
      IK1-3 (BCL-) - Body ground Engine switch on (IG) Below 1 V

    5. Turn the engine switch off.

    6. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

    7. Using a service wire, connect terminals 1 (BCL+) and 2 (BCL-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      IK1-4 (BCL+) - IK1-3 (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
      IK1-4 (BCL+) - IK1-3 (BCL-) Always 1 MΩ or higher
      IK1-4 (BCL+) - Body ground Always 1 MΩ or higher
      IK1-3 (BCL-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FLOOR WIRE

    NG

    REPLACE FRONT DOOR WIRE LH

  27. CHECK CONNECTION OF CONNECTOR


    1. Check that the connector is properly connected to the No. 2 side airbag sensor assembly LH.

      Result
      Proceed to
      The connector is properly connected
      The connector is not properly connected

    The connector is not properly connected

    CONNECT CONNECTOR PROPERLY

    The connector is properly connected

  28. CHECK CONNECTOR


    1. Disconnect the connector from the No. 2 side airbag sensor assembly LH and rear airbag sensor LH.

    2. B006M3OC07
      *1 No. 2 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *3 Rear Door Wire LH
      *4 Floor Wire

      Check that the connector (on the No. 2 side airbag sensor assembly LH side) is not damaged.

      Result
      Proceed to
      The connector is not deformed or damaged
      The connector is deformed or damaged

    The connector is deformed or damaged

    REPLACE REAR DOOR WIRE LH

    The connector is not deformed or damaged

  29. CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH CIRCUIT


    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

      B006LUMC03
      *1 No. 2 Side Airbag Sensor Assembly LH *2 Rear Airbag Sensor LH
      *3 Rear Door Wire LH *4 Floor Wire
      *5 Connector E *6 Connector B
      *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 Rear Airbag Sensor LH)

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      J22-2 (BDL+) - Body ground Engine switch on (IG) Below 1 V
      J22-1 (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, and wait for at least 90 seconds.

    6. Using a service wire, connect terminals 1 (BDL+) and 2 (BDL-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J22-2 (BDL+) - J22-1 (BDL-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J22-2 (BDL+) - J22-1 (BDL-) Always 1 MΩ or higher
      J22-2 (BDL+) - Body ground Always 1 MΩ or higher
      J22-1 (BDL-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK FLOOR WIRE Click here

    OK

  30. CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH


    1. B006P0FC39
      *1 No. 2 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor LH

      Connect the connectors to the rear airbag sensor LH.

    2. Interchange the No. 2 side airbag sensor assembly LH and RH, and connect the connectors to them.

    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

    4. Turn the engine switch on (IG), and wait for at least 60 seconds.

    5. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    6. Turn the engine switch off.

    7. Turn the engine switch on (IG), and wait for at least 60 seconds.

    8. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B1642/81 or B1643/81 is output
      DTC B1647/82 or B1648/82 is output
      DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

      Tech Tips

      Codes other than DTC B1642/81, B1643/81, B1647/82 and B1648/82 may be output at this time, but they are not related to this check.

    9. Turn the engine switch off.

    10. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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


    DTC B1642/81 or B1643/81 is output

    REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH Click here

    DTC B1647/82 or B1648/82 is output

    REPLACE AIRBAG ECU ASSEMBLY w/ Navigation System: REPLACE AIRBAG ECU ASSEMBLY Click here
    REPLACE AIRBAG ECU ASSEMBLY w/o Navigation System: REPLACE AIRBAG ECU ASSEMBLY Click here

    DTC B1642/81, B1643/81, B1647/82 and B1648/82 are not output

    USE SIMULATION METHOD TO CHECK Click here

  31. CHECK FLOOR WIRE


    1. Disconnect the floor wire connector from the rear door wire LH.

      B006LW1C02
      *1 No. 2 Side Airbag Sensor Assembly LH *2 Rear Airbag Sensor LH
      *3 Rear Door Wire LH *4 Floor Wire
      *5 Connector C *6 Connector B
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to Rear Door Wire LH)

      		 *b

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)

    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

    3. Turn the engine switch on (IG).

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      JK3-2 (BDL+) - Body ground Engine switch on (IG) Below 1 V
      JK3-1 (BDL-) - Body ground Engine switch on (IG) Below 1 V

    5. Turn the engine switch off.

    6. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

    7. Using a service wire, connect terminals 1 (BDL+) and 2 (BDL-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      JK3-2 (BDL+) - JK3-1 (BDL-) 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
      JK3-2 (BDL+) - JK3-1 (BDL-) Always 1 MΩ or higher
      JK3-2 (BDL+) - Body ground Always 1 MΩ or higher
      JK3-1 (BDL-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR DOOR WIRE LH

    NG

    REPLACE FLOOR WIRE