AUDIO AND VISUAL SYSTEM (for Radio and Display Type), Diagnostic DTC:B15C3

DTC Code DTC Name
B15C3 Speaker Output Short

DESCRIPTION

This DTC is stored when a malfunction occurs in the speakers.

DTC No. DTC Detection Condition Trouble Area
B15C3 A short is detected in the speaker output circuit

  • Harness or connector

  • Speaker

  • Radio and display receiver assembly

WIRING DIAGRAM

B000LV5E31

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BODY GROUND)


    1. Disconnect the I152 and I153 radio and display receiver assembly connectors.

    2. Disconnect the I83 and I1 front No. 2 speaker assembly connectors.

    3. Disconnect the O18 and O21 rear speaker assembly connectors.

    4. Measure the resistance between the radio and display receiver assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      I152-1 (FR+) - Body ground Always 10 kΩ or higher
      I152-5 (FR-) - Body ground Always 10 kΩ or higher
      I152-2 (FL+) - Body ground Always 10 kΩ or higher
      I152-6 (FL-) - Body ground Always 10 kΩ or higher
      I153-1 (RR+) - Body ground Always 10 kΩ or higher
      I153-3 (RR-) - Body ground Always 10 kΩ or higher
      I153-2 (RL+) - Body ground Always 10 kΩ or higher
      I153-6 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY - BODY GROUND)


    1. Disconnect the J5 and K5 front No. 1 speaker assembly connectors.

    2. Disconnect the I83 and I1 front No. 2 speaker assembly connectors.

    3. Measure the resistance between each of the front No. 2 speaker assemblies and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      I83-3 (+) - Body ground Always 10 kΩ or higher
      I83-1 (-) - Body ground Always 10 kΩ or higher
      I1-3 (+) - Body ground Always 10 kΩ or higher
      I1-1 (-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly Click here.

    2. B000HXYE01
      Text in Illustration
      *a

      Component without harness connected

      (Front No. 1 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  4. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly Click here.

    2. B000NGGE51
      Text in Illustration
      *A for RH
      *B for LH
      *a

      Component without harness connected

      (Front No. 2 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (TWR-) - 4 (TWR+) Always 10 kΩ or higher
      1 (-) - 2 (TWR-) Always Below 1 Ω
      3 (+) - 4 (TWR+) Always Below 1 Ω
      2 (TWL-) - 4 (TWL+) Always 10 kΩ or higher
      1 (-) - 2 (TWL-) Always Below 1 Ω
      3 (+) - 4 (TWL+) Always Below 1 Ω

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  5. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker assembly with a new or known good one Click here.

    2. Clear the DTCs Click here.

    3. Recheck for DTCs and check that no DTCs are output.

      OK
      No DTCs are output.

      Tech Tips


      • Connect all the connectors to the front No. 2 speaker assemblies that were disconnected.

      • When there is a possibility that either the right or left front No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.

      • Perform the above inspection on both the LH and RH side.


    NG

    INSPECT REAR SPEAKER ASSEMBLY Click here

    OK

    END

  6. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly Click here.

    2. B000HXYE01
      Text in Illustration
      *a

      Component without harness connected

      (Rear Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here