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. Detection Item DTC Detection Condition Trouble Area
B15C3 Speaker Output Short A short is detected in the speaker output circuit.

  • Harness or connector

  • Speaker

  • Stereo component amplifier assembly

WIRING DIAGRAM

A01SFPYE01
A01SFP8E01
*a Rear Speaker Assembly RH
*b Rear Speaker Assembly LH
*c No. 1 Speaker with Box Assembly
*d Stereo Component Amplifier Assembly

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. Disconnect the E91 stereo component amplifier assembly connector.

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

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

    4. Disconnect the J2 and K2 rear speaker assembly connectors.

    5. Disconnect the L44 No. 1 speaker with box 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
      E91-15 (FR+) - Body ground Always 10 kΩ or higher
      E91-30 (FR-) - Body ground Always 10 kΩ or higher
      E91-12 (FL+) - Body ground Always 10 kΩ or higher
      E91-27 (FL-) - Body ground Always 10 kΩ or higher
      E91-13 (TWR+) - Body ground Always 10 kΩ or higher
      E91-28 (TWR-) - Body ground Always 10 kΩ or higher
      E91-14 (TWL+) - Body ground Always 10 kΩ or higher
      E91-29 (TWL-) - Body ground Always 10 kΩ or higher
      E91-11 (RR+) - Body ground Always 10 kΩ or higher
      E91-26 (RR-) - Body ground Always 10 kΩ or higher
      E91-10 (RL+) - Body ground Always 10 kΩ or higher
      E91-25 (RL-) - Body ground Always 10 kΩ or higher
      E91-9 (WFR+) - Body ground Always 10 kΩ or higher
      E91-24 (WFR-) - Body ground Always 10 kΩ or higher
      E91-8 (WFL+) - Body ground Always 10 kΩ or higher
      E91-23 (WFL-) - 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.

    2. A01SFQDC30
      *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 FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

    2. A01SFFNC12
      *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 - 2 Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  4. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker assembly.

      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 speaker is defective, inspect by interchanging the right one with the left one.

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

      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

    NG

  5. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

    2. A01SFQDC30
      *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

  6. REPLACE REAR SPEAKER ASSEMBLY


    1. Replace the rear speaker assembly.

      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 rear speaker assemblies that were disconnected.

      • When there is a possibility that either the right or left speaker is defective, inspect by interchanging the right one with the left one.

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

      Result
      Proceed to
      OK
      NG

    OK

    END (REAR SPEAKER ASSEMBLY WAS DEFECTIVE)

    NG

  7. INSPECT NO. 1 SPEAKER WITH BOX ASSEMBLY


    1. Remove the No. 1 speaker with box assembly.

    2. A01SFJQC17
      *a

      Component without harness connected

      (No. 1 Speaker with Box Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (WF+) - 3 (WF-) Always 4.0 to 6.4 Ω
      2 (WF-) - 4 (WF+) Always 4.0 to 6.4 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    NG

    REPLACE NO. 1 SPEAKER WITH BOX ASSEMBLY Click here