G-BOOK SYSTEM, Diagnostic DTC:B15C4

DTC Code DTC Name
B15C4 Airbag Signal Malfunction/Not Input

DESCRIPTION

If the telematics transceiver detects an error in communication between the telematics transceiver and the airbag sensor assembly as a result of the telematics transceiver self check, this DTC will be stored.

DTC No. DTC Detection Condition Trouble Area
B15C4 Airbag signal problem

  • Airbag system

  • Wire harness or connector

  • Airbag sensor assembly

  • Telematics transceiver

WIRING DIAGRAM

A00072ZE05
*1 Airbag Sensor Assembly
*2 Telematics Transceiver

CAUTION / NOTICE / HINT

Note

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precautions for G-BOOK Click here.

PROCEDURE


  1. CHECK DTC (AIRBAG SYSTEM)


    1. Clear the DTCs Click here.

    2. Recheck for DTCs and check that no DTCs are output.

      OK
      No DTCs are output.

    NG

    GO TO AIRBAG SYSTEM Click here

    OK

  2. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  3. RECHECK DTC


    1. Recheck for DTCs and check that no DTCs are output Click here.

      OK
      No DTCs are output.

    OK

    END

    NG

  4. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - AIRBAG SENSOR ASSEMBLY)


    1. Disconnect the H101 telematics transceiver connector.

    2. Disconnect the H36 airbag sensor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H101-24 (GSW) - H36-24 (GSW3) Always Below 1 Ω
      H101-24 (GSW) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT TELEMATICS TRANSCEIVER


    1. A0006G0E02

      Disconnect the H101 telematics transceiver connector.

    2. A0003Y3E14
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Telematics Transceiver)

      Check the input waveform.


      1. Check the signal waveform according to the condition(s) in the table below. (Check the waveform from the back of the wire harness connector of the telematics transceiver while the airbag sensor assembly connectors are connected.)

        Item Condition
        Tester Connection H101-24 (GSW) - Body ground
        Tool setting 5.0 V/DIV., 20 ms/DIV.
        Vehicle condition Power switch on (IG)
        OK
        The waveform is output normally as shown in the illustration.

    OK

    REPLACE TELEMATICS TRANSCEIVER Click here

    NG

  6. REPLACE AIRBAG SENSOR ASSEMBLY


    1. Replace the airbag sensor assembly with a known good one Click here.


    NEXT

  7. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  8. RECHECK DTC


    1. Recheck for DTCs and check that no DTCs are output Click here.

      OK
      No DTCs are output.

    OK

    END (AIRBAG SENSOR ASSEMBLY WAS DEFECTIVE)

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here