AIRBAG SYSTEM, Diagnostic DTC:B0131/64

DTC Code DTC Name
B0131/64 Open in Front Pretensioner Squib RH Circuit

DESCRIPTION

The P/T squib circuit (RH) consists of the airbag ECU assembly and seat belt pretensioner (RH).

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

DTC B0131/64 is recorded when an open is detected in the P/T squib (RH) circuit.

DTC No. DTC Detecting Condition Trouble Area
B0131/64

  • Open circuit in PR+ wire harness or PR- wire harness of squib

  • P/T squib (RH) malfunction

  • Airbag ECU assembly malfunction

  • Seat belt pretensioner (RH)

  • Airbag ECU assembly

  • Wire harness

WIRING DIAGRAM

Click here.

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK P/T SQUIB(RH) CIRCUIT


    1. A01KH4TE01
      Text in Illustration
      *1 P/T Squib (RH)
      *2 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 seat belt pretensioner (RH).

    3. For the connector (on the seat belt pretensioner side) between the seat belt pretensioner (RH) and the airbag ECU assembly, measure the resistance between PR+ and PR-.

      OK
      Resistance: Below 1 Ω

    NG

    CHECK COWL WIRE (AIRBAG ECU ASSEMBLY-FRONT SEAT OUTER BELT ASSEMBLY RH) Click here

    OK

  2. CHECK AIR BAG ECU ASSEMBLY

    SST
    09843-18040

    1. A01KF6BE01
      Text in Illustration
      *1 P/T Squib (RH)
      *2 Airbag ECU Assembly
      *4 DLC3
      *a DTC B0131/64

      Connect the connector to the airbag ECU assembly.

    2. Using SST, connect PR+ and PR- of the connector (on the seat belt pretensioner side) between the seat belt pretensioner RH) and the airbag ECU 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 B0131/64 is not output.

      Tech Tips

      Codes other than code B0131/64 may be output at this time, but they are not relevant to this check.


    NG

    REPLACE AIR BAG ECU ASSEMBLY

    OK

  3. CHECK P/T SQUIB (RH)

    SST
    09843-18040

    1. A01KHYJE01
      Text in Illustration
      *1 P/T Squib (RH)
      *2 Airbag ECU Assembly
      *3 DLC3
      *a DTC B0131/64

      Turn the ignition switch to LOCK.

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

    3. Connect the seat belt pretensioner (RH) 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 LOCK, and wait at least for 20 seconds.

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

    9. Check the DTC Click here.

      OK
      DTC B0131/64 is not output.

      Tech Tips

      Codes other than code B0131/64 may be output at this time, but they are not relevant to this check.


    NG

    REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH

    OK

    USE SIMULATION METHOD TO CHECK

  4. CHECK COWL WIRE (AIRBAG ECU ASSEMBLY-FRONT SEAT OUTER BELT ASSEMBLY RH)


    1. A01KFNTE01
      Text in Illustration
      *1 P/T Squib (RH)
      *2 Cowl Wire
      *3 Airbag ECU Assembly

      Disconnect the connectors of the cowl wire.

    2. For the cowl wire connector (on the seat belt pretensioner side), measure the resistance between PR+ and PR-.

      OK
      Resistance: Below 1 Ω

    NG

    REPAIR OR REPLACE COWL WIRE

    OK

  5. CHECK FLOOR WIRE (AIRBAG ECU ASSEMBLY-FRONT SEAT OUTER BELT ASSEMBLY RH)


    1. A01KIOYE01
      Text in Illustration
      *1 P/T Squib (RH)
      *2 Floor Wire
      *3 Airbag ECU Assembly

      Disconnect the connectors of the floor wire.

    2. For the floor wire connector (on the seat belt pretensioner side) between the airbag ECU assembly and the seat belt pretensioner (RH), measure the resistance between PR+ and PR-.

      OK
      Resistance: Below 1 Ω

    NG

    REPAIR OR REPLACE FLOOR WIRE

    OK

    USE SIMULATION METHOD TO CHECK