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

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DTC Code DTC Name
B15C4 SRS Communication Error
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DESCRIPTION

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

DTC No. Detection Item DTC Detection Condition Trouble Area
B15C4 SRS Communication Error The telematics transceiver detects an error in signals from the airbag ECU assembly when engine switch is on (IG).

  • Telematics transceiver

  • Airbag ECU assembly

  • Wire harness or connector

  • Airbag system
Table 1. *1 Airbag ECU Assembly *2 Telematics Transceiver
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WIRING DIAGRAM

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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 Registration for Telematics System.

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  • This vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.

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PROCEDURE


  1. Click here

    CHECK DTC (AIRBAG SYSTEM)


    1. Turn the engine switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG) and wait for 20 seconds.

    4. Turn the GTS on.

    5. Check if airbag system DTCs are output.

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      1. Body Electrical > SRS Airbag > Trouble Codes


      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

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    INSPECT TELEMATICS TRANSCEIVER


    1. B0065CPC14
      *a

      Component with harness connected

      (Telematics Transceiver)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      24 (GSW) - Body ground Engine switch on (IG) 8.0 to 16 V
      Reference Waveform
      Item Condition
      Tester connection O65-24 (GSW) - Body ground
      Tool setting 5.0 V/DIV., 20 ms/DIV.
      Vehicle condition Engine switch on (IG)
      Result
      Proceed to
      OK
      NG

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    REPLACE TELEMATICS TRANSCEIVER


    1. Replace the telematics transceiver with a new one.

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      Result
      Proceed to
      NEXT

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    CHECK HARNESS AND CONNECTOR


    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) or O50-24 (GSW3) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE AIRBAG ECU ASSEMBLYClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR