AIRBAG SYSTEM, Diagnostic DTC:B0102/11

DTC Code DTC Name
B0102/11 Short to GND 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 SRS to deploy when the SRS deployment conditions are satisfied.

DTC B0102/11 is recorded when a ground short is detected in the D squib circuit.

DTC No. DTC Detecting Condition Trouble Area
B0102/11

  • Short circuit in D squib wire harness (to ground)

  • 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

Click here.

INSPECTION PROCEDURE

PROCEDURE


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


    1. A01KF7DE01
      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 connector between the airbag ECU assembly and the horn button assembly.

    3. 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 body ground.

      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. A01KEN8E01
      Text in Illustration
      *1 D Squib
      *2 Spiral Cable Sub-Assembly
      *3 Airbag ECU Assembly
      *4 DLC3
      *a DTC B0102/11

      Connect the connector to the airbag ECU assembly.

    2. Using SST, connect D+ and D- of the connector (on the spiral cable sub-assembly side) between the spiral cable sub-assembly and the horn button assembly.

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

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

    5. Clear the DTC stored in memory Click here.

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

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

    8. Check the DTC Click here.

      OK
      DTC B0102/11 is not output.

      Tech Tips

      Codes other than code B0102/11 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. A01KH7XE01
      Text in Illustration
      *1 D Squib
      *2 Spiral Cable Sub-Assembly
      *3 Airbag ECU Assembly
      *4 DLC3
      *a DTC B0102/11

      Turn the ignition switch to LOCK.

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

    3. Connect the horn button assembly connector.

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

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

    6. Turn the ignition switch to ON, and wait at least for 60 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. Clear the DTC Click here.

      OK
      DTC B0102/11 is not output.

      Tech Tips

      Codes other than code B0102/11 may be output at this time, but they are not relevant to this check.


    NG

    REPLACE HORN BUTTON ASSEMBLY

    OK

  4. USE SIMULATION METHOD TO CHECK


    NG

    CHECK D SQUIB CIRCUIT (AIRBAG ECU ASSEMBLY-HORN BUTTON ASSEMBLY) Click here

    OK

    REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS

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


    1. A01KI4QE01
      Text in Illustration
      *1 D Squib
      *2 Cowl Wire
      *3 Spiral Cable Sub-Assembly
      *4 Airbag ECU Assembly

      Disconnect the connectors of the cowl wire.

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

      OK
      Resistance: 1 MΩ or Higher

    NG

    REPAIR OR REPLACE COWL WIRE

    OK

  6. CHECK SPIRAL CABLE SUB-ASSEMBLY


    1. A01KFTFE01
      Text in Illustration
      *1 D Squib
      *2 Spiral Cable Sub-Assembly
      *3 Airbag ECU Assembly

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

      OK
      Resistance: 1 MΩ or Higher

    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY

    OK

  7. USE SIMULATION METHOD TO CHECK


    NG

    CHECK D SQUIB CIRCUIT (AIRBAG ECU ASSEMBLY-HORN BUTTON ASSEMBLY) Click here

    OK

    REPLACE ALL SRS COMPONENTS INCLUDING THE WIRE HARNESS