TELEMATICS 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 center 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

  • Harness or connector

  • Center airbag sensor assembly

  • Telematics transceiver

WIRING DIAGRAM

A01FPZHE03

INSPECTION PROCEDURE

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.

      OK
      No DTCs are output.

    NG

    GO TO AIRBAG SYSTEM Click here

    OK

  2. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

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

      OK
      B15C4 is not output.

    NG

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

    OK

    USE SIMULATION METHOD TO CHECK Click here

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


    1. Disconnect the N169 telematics transceiver connector.

    2. Disconnect the N52 center airbag sensor assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N169-24 (GSW) - N52-24 (GSW3) Always Below 1 Ω
      N169-24 (GSW) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT TELEMATICS TRANSCEIVER


    1. A01FQSBE99

      Disconnect the N169 telematics transceiver connector.

    2. A01FV5IE01
      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 center airbag sensor assembly connectors are connected.)

        Item Condition
        Tester Connection N169-24 (GSW) - Body ground
        Tool setting 5.0 V/DIV., 20 ms./DIV.
        Vehicle condition Power switch on (IG)
        OK
        The waveform is similar to the shown in the illustration.

    NG

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

    OK

    REPLACE TELEMATICS TRANSCEIVER Click here

  5. REPLACE CENTER AIRBAG SENSOR ASSEMBLY


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


    NEXT

  6. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

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

      OK
      B15C4 is not output.

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

    END (CENTER AIRBAG SENSOR ASSEMBLY IS DEFECTIVE)