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 airbag sensor assembly as a result of the telematics transceiver self check, this DTC will be stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15C4 Airbag Signal Malfunction/Not Input Airbag signal problem

  • Airbag system

  • Wire harness or connector

  • Airbag sensor assembly

  • Telematics transceiver

WIRING DIAGRAM

B003XAIE09
*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 Precaution for G-BOOK.

Click here

PROCEDURE


  1. CHECK DTC OUTPUT (AIRBAG SYSTEM)


    1. Check for DTCs and check that no DTCs are output.

      Click here

      Result
      Result Proceed to
      No DTCs are output. A
      DTCs for airbag system are output. B

    B

    GO TO AIRBAG SYSTEM Click here

    A

  2. CHECK DTC OUTPUT


    1. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    2. Recheck for DTCs and check if the same DTC is output again.


      Body Electrical > Navigation System > Trouble Codes
      Result
      Result Proceed to
      No DTCs are output. A
      DTCs are output. B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

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


    1. Disconnect the K66 telematics transceiver connector.

    2. Disconnect the K51 airbag sensor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K66-24 (GSW) - K51-24 (GSW3) Always Below 1 Ω
      K66-24 (GSW) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT TELEMATICS TRANSCEIVER


    1. Disconnect the K66 telematics transceiver connector.

    2. B003VTPE04

      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 K66-24 (GSW) - Body ground
        Tool setting 5.0 V/DIV., 20 ms./DIV.
        Vehicle condition Engine switch on (IG)
        OK
        The waveform is similar to that shown in the illustration.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TELEMATICS TRANSCEIVER Click here

    NG

  5. REPLACE AIRBAG SENSOR ASSEMBLY


    1. Replace the airbag sensor assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  6. CHECK DTC OUTPUT


    1. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    2. Recheck for DTCs and check if the same DTC is output again.


      Body Electrical > Navigation System > Trouble Codes
      Result
      Result Proceed to
      No DTCs are output. A
      DTCs are output. B

    A

    END

    B

    REPLACE TELEMATICS TRANSCEIVER Click here