G-BOOK SYSTEM (w/ Telematics Transceiver), 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

A019NZRE04

INSPECTION PROCEDURE

Tech Tips

When replacing the telematics transceiver, perform the vehicle contract setting 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.

    NG

    CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - AIRBAG SENSOR ASSEMBLY) Click here

    OK

    END

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


    1. Disconnect the G25 telematics transceiver connector.

    2. Disconnect the F29 airbag sensor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G25-24 (GSW) - F29-24 (GSW3) Always Below 1 Ω
      G25-24 (GSW) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT TELEMATICS TRANSCEIVER


    1. A019P4QE10

      Disconnect the G25 telematics transceiver connector.

    2. A019NQJE01
      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 G25-24 (GSW) - Body ground
        Tool setting 5.0 V/DIV., 20 ms/DIV.
        Vehicle condition Engine switch on (IG)

    NG

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

    OK

    REPLACE TELEMATICS TRANSCEIVER Click here

  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.

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

    END (AIRBAG SENSOR ASSEMBLY WAS DEFECTIVE)