AIRBAG SYSTEM, Diagnostic DTC:B0100/13

DTC Code DTC Name
B0100/13 Short in Driver Side Squib Circuit

DESCRIPTION

The D squib circuit consists of the airbag ECU assembly, spiral cable sub-assembly and horn button assembly.

It causes the airbag to deploy when the airbag deployment conditions are satisfied.

DTC B0100/13 is recorded when a short is detected in the D squib circuit.

DTC No. DTC Detecting Condition Trouble Area
B0100/13

  • Short circuit between D+ wire harness and D- wire harness of squib

  • D squib malfunction

  • Spiral cable sub-assembly malfunction

  • Airbag ECU assembly malfunction

  • Horn button assembly (D squib)

  • Spiral cable sub-assembly

  • Airbag ECU assembly

  • Wire harness

WIRING DIAGRAM

A01KES7E01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK D SQUIB CIRCUIT (AIRBAG ECU ASSEMBLY - HORN BUTTON ASSEMBLY)


    1. A01KIHDE01
      Text in Illustration
      *1 D Squib
      *2 Spiral Cable Sub-Assembly
      *3 Airbag ECU Assembly

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

    2. Disconnect the connectors between the airbag ECU assembly and the horn button assembly.

    3. Release the airbag activation prevention mechanism of the connector (on the airbag ECU assembly side) between the airbag ECU assembly and the spiral cable sub-assembly Click here.

    4. For the connector (on the spiral cable sub-assembly side ) between the spiral cable sub-assembly and the horn button assembly, measure the resistance between D+ and D-.

      OK
      Resistance: 1 MΩ or Higher

    NG

    CHECK COWL WIRE (AIRBAG ECU ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY) Click here

    OK

  2. CHECK AIR BAG ECU ASSEMBLY

    SST
    09843-18040

    1. A01KEHME01
      Text in Illustration
      *1 D Squib
      *2 Spiral Cable Sub-Assembly
      *3 Airbag ECU Assembly
      *4 DLC3
      *a DTC B0100/13

      Connect the connector to the airbag ECU assembly.

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

    3. Turn the ignition switch to ON, and wait at least for 20 seconds.

    4. Clear the DTC stored in memory Click here.

    5. Turn the ignition switch to LOCK, and wait at least for 20 seconds.

    6. Turn the ignition switch to ON, and wait at least for 60 seconds.

    7. Check the DTC Click here.

      OK
      DTC B0100/13 is not output.

      Tech Tips

      Codes other than code B0100/13 may be output at this time, but they are not relevant to this check.


    NG

    REPLACE AIR BAG ECU ASSEMBLY

    OK

  3. CHECK D SQUIB

    SST
    09843-18040

    1. A01KG6IE01
      Text in Illustration
      *1 D Squib
      *2 Spiral Cable Sub-Assembly
      *3 Airbag ECU Assembly
      *4 DLC3
      *a DTC B0100/13

      Turn the ignition switch to LOCK.

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

    3. Connect the horn button assembly connector.

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

    5. Turn the ignition switch to LOCK, and wait at least for 20 seconds.

    6. Turn the ignition switch to ON, and wait at least for 20 seconds.

    7. Clear the DTC stored in memory Click here.

    8. Turn the ignition switch to LOCK, and wait at least for 20 seconds.

    9. Turn the ignition switch to ON, and wait at least for 60 seconds.

    10. Check the DTC Click here.

      OK
      DTC B0100/13 is not output.

      Tech Tips

      Codes other than code B0100/13 may be output at this time, but they are not relevant to this check.


    NG

    REPLACE HORN BUTTON ASSEMBLY

    OK

    USE SIMULATION METHOD TO CHECK

  4. CHECK COWL WIRE (AIRBAG ECU ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY)


    1. A01KFG5E01
      Text in Illustration
      *1 D Squib
      *2 Spiral Cable Sub-Assembly
      *3 Airbag ECU Assembly

      Disconnect the connectors of the cowl wire harness.

    2. Release the airbag activation prevention mechanism of the connector (on the airbag ECU assembly side) between the airbag ECU assembly and the spiral cable sub-assembly Click here.

    3. For the connector (on the spiral cable sub-assembly side ) between the spiral cable sub-assembly and airbag ECU assembly, measure the resistance between D+ and D-.

      OK
      Resistance: 1 MΩ or Higher

    NG

    REPAIR OR REPLACE COWL WIRE

    OK

  5. CHECK SPIRAL CABLE SUB-ASSEMBLY


    1. A01KES1E01
      Text in Illustration
      *1 D Squib
      *2 Spiral Cable Sub-Assembly
      *3 Airbag ECU Assembly

      Release the airbag activation prevention mechanism of the spiral cable sub-assembly connector (on the airbag ECU assembly side) Click here.

    2. For the connector (on the spiral cable sub-assembly side ) between the spiral cable sub-assembly and the horn button assembly, measure the resistance between D+ and D-.

      OK
      Resistance: 1 MΩ or Higher

    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY

    OK

    USE SIMULATION METHOD TO CHECK