NAVIGATION SYSTEM, 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

  • Speakers

  • Stereo component amplifier assembly

WIRING DIAGRAM

A01MFKLE01
A01MGI7E01
*a No. 2 Front Speaker Assembly RH
*b No. 2 Front Speaker Assembly LH
*c Rear No. 2 Speaker Assembly
*d Stereo Component Amplifier Assembly

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BODY GROUND)


    1. Disconnect the P48 stereo component amplifier assembly connector.

    2. Disconnect the L2 and L11 front No. 1 speaker assembly connectors.

    3. Disconnect the M3 and M9 rear speaker assembly connectors.

    4. Disconnect the H5 and H6 front No. 2 speaker assembly connectors.

    5. Disconnect the P45 rear No. 2 speaker assembly connector.

    6. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      P48-15 (FR+) - Body ground Always 10 kΩ or higher
      P48-30 (FR-) - Body ground Always 10 kΩ or higher
      P48-11 (FL+) - Body ground Always 10 kΩ or higher
      P48-26 (FL-) - Body ground Always 10 kΩ or higher
      P48-12 (RR+) - Body ground Always 10 kΩ or higher
      P48-27 (RR-) - Body ground Always 10 kΩ or higher
      P48-10 (RL+) - Body ground Always 10 kΩ or higher
      P48-25 (RL-) - Body ground Always 10 kΩ or higher
      P48-14 (TWR+) - Body ground Always 10 kΩ or higher
      P48-29 (TWR-) - Body ground Always 10 kΩ or higher
      P48-13 (TWL+) - Body ground Always 10 kΩ or higher
      P48-28 (TWL-) - Body ground Always 10 kΩ or higher
      P48-8 (WF1+) - Body ground Always 10 kΩ or higher
      P48-23 (WF1-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly.

      Click here

    2. A01MGLNC30
      *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 5.2 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  3. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      Click here

    2. A01MGLNC30
      *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 3.6 to 4.4 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

  4. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

      Click here

    2. A01MIG1C01
      *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+) - 3 (TWR-) Always 3.4 to 5.2 Ω
      4 (TWL+) - 3 (TWL-) Always 3.4 to 5.2 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  5. INSPECT REAR NO. 2 SPEAKER ASSEMBLY


    1. Remove the rear No. 2 speaker assembly.

      Click here

    2. A01MGLNC70
      *a

      Component without harness connected

      (Rear No. 2 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (WF1+) - 2 (WF1-) Always 4.8 to 6.8 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    NG

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here