AIRBAG SYSTEM, Diagnostic DTC:B0101/14

DTC Code DTC Name
B0101/14 Open 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 B0101/14 is recorded when an open is detected in the D squib circuit.

DTC No. DTC Detecting Condition Trouble Area
B0101/14

  • Open circuit in D+ wire harness or 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

Click here.

INSPECTION PROCEDURE

PROCEDURE


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


    1. A01KFP5E01
      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. 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: Below 1 Ω

    NG

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

    OK

  2. CHECK AIR BAG ECU ASSEMBLY

    SST
    09843-18040

    1. A01KIKPE01
      Text in Illustration
      *1 D Squib
      *2 Spiral Cable Sub-Assembly
      *3 Airbag ECU Assembly
      *4 DLC3
      *a DTC B0101/14

      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 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 B0101/14 is not output.

      Tech Tips

      Codes other than code B0101/14 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. A01KFYOE01
      Text in Illustration
      *1 D Squib
      *2 Spiral Cable Sub-Assembly
      *3 Airbag ECU Assembly
      *4 DLC3
      *a DTC B0101/14

      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 ON, and wait at least for 20 seconds.

    6. Clear the DTC stored in memory Click here.

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

    8. Check the DTC Click here.

      OK
      DTC B0101/14 is not output.

      Tech Tips

      Codes other than code B0101/14 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. A01KFIJE01
      Text in Illustration
      *1 D Squib
      *2 Spiral Cable Sub-Assembly
      *3 Cowl Wire
      *4 Airbag ECU Assembly

      Disconnect the connectors of the cowl wire.

    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: Below 1 Ω

    NG

    REPAIR OR REPLACE COWL WIRE

    OK

  5. CHECK SPIRAL CABLE SUB-ASSEMBLY


    1. A01KH9PE01
      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 airbag ECU assembly and the spiral cable sub-assembly, measure the resistance between D+ and D-.

      OK
      Resistance: Below 1 Ω

    NG

    REPLACE SPIRAL CABLE SUB-ASSEMBLY

    OK

    USE SIMULATION METHOD TO CHECK