AUDIO AND VISUAL SYSTEM(except Sedan 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. Detection Item DTC Detection Condition Trouble Area
B15C3 Speaker Output Short A short is detected in the speaker output circuit

  • Harness or connector

  • Speaker

  • Radio and display receiver assembly

WIRING DIAGRAM


  1. A01KS2DE71

PROCEDURE


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


    1. Disconnect the E1 and E2 radio and display receiver assembly connectors.

    2. Disconnect the G4 and H5 front No. 2 speaker assembly connectors.

    3. Disconnect the J2 and K2 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
      E1-1 (FR+) - Body ground Always 10 kΩ or higher
      E1-5 (FR-) - Body ground Always 10 kΩ or higher
      E1-2 (FL+) - Body ground Always 10 kΩ or higher
      E1-6 (FL-) - Body ground Always 10 kΩ or higher
      E2-1 (RR+) - Body ground Always 10 kΩ or higher
      E2-3 (RR-) - Body ground Always 10 kΩ or higher
      E2-2 (RL+) - Body ground Always 10 kΩ or higher
      E2-6 (RL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the G1 and H1 front No. 1 speaker assembly connectors.

    2. Disconnect the G4 and H5 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
      G4-3 (+) - Body ground Always 10 kΩ or higher
      G4-1 (-) - Body ground Always 10 kΩ or higher
      H5-3 (+) - Body ground Always 10 kΩ or higher
      H5-1 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    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. A01KRZGC30
      *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
      Result
      Proceed to
      OK
      NG

    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. A01KTMOC11
      *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
      4 (TWR+) - 2 (TWR-) Always 10 kΩ or higher
      3 (+) - 4 (TWR+) Always Below 1 Ω
      1 (-) - 2 (TWR-) Always Below 1 Ω
      4 (TWL+) - 2 (TWL-) Always 10 kΩ or higher
      3 (+) - 4 (TWL+) Always Below 1 Ω
      1 (-) - 2 (TWL-) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    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


      Body Electrical > Navigation System > Clear DTCs

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


      Body Electrical > Navigation System > Trouble Codes
      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.

      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

  6. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      Click here

    2. A01KRZGC30
      *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
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here