Click here

TELEMATICS SYSTEM(w/ Telematics Transceiver for G-BOOK), Diagnostic DTC:B15C4

Click here
Click here
DTC Code DTC Name
B15C4 Airbag Signal Malfunction/Not Input
Click here

DESCRIPTION

If the telematics transceiver detects an error in communication between the telematics transceiver and airbag ECU 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 ECU assembly

  • Telematics transceiver
Table 1. *1 Airbag ECU Assembly *2 Telematics Transceiver
Click here

WIRING DIAGRAM

Click here

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

Click here

PROCEDURE


  1. Click here

    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

  2. Click here

    CHECK DTC OUTPUT


    1. Clear the DTCs.

      Click here


      1. Body Electrical > Navigation System > Clear DTCs


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


      1. Body Electrical > Navigation System > Trouble Codes


      Result
      Result Proceed to
      No DTCs are output. A
      DTCs are output. B

  3. Click here

    CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - AIRBAG ECU ASSEMBLY)


    1. Disconnect the O65 telematics transceiver connector.

    2. Disconnect the O50 airbag ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O65-24 (GSW) - O50-24 (GSW3) Always Below 1 Ω
      O65-24 (GSW) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. Click here

    INSPECT TELEMATICS TRANSCEIVER


    1. Disconnect the O65 telematics transceiver connector.

    2. B0067IXE04

      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 ECU assembly connectors are connected.)

        Item Condition
        Tester Connection O65-24 (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

  5. Click here

    REPLACE AIRBAG ECU ASSEMBLY


    1. Replace the airbag ECU assembly.

      Click here

      Result
      Proceed to
      NEXT

  6. Click here

    CHECK DTC OUTPUT


    1. Clear the DTCs.

      Click here


      1. Body Electrical > Navigation System > Clear DTCs


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


      1. Body Electrical > Navigation System > Trouble Codes


      Result
      Result Proceed to
      No DTCs are output. A
      DTCs are output. B