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

  • Stereo component amplifier assembly*1

  • Radio setting condenser*2

  • Radio receiver assembly

WIRING DIAGRAM


  1. for 10 Speakers

    B001MDME03
    B001MZ7E05

  2. for 6 Speakers

    B001MJNE05

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      for 6 Speakers A
      for 10 Speakers B

    B

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BODY GROUND) Click here

    A

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


    1. Disconnect the H162 and H163 radio receiver assembly connectors.

    2. Disconnect the J1 and K1 front No. 1 speaker assembly connectors.

    3. Disconnect the L4 and M4 rear speaker assembly connectors.

    4. Disconnect the H46 radio setting condenser connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H162-1 (FR+) - Body ground Always 10 kΩ or higher
      H162-5 (FR-) - Body ground Always 10 kΩ or higher
      H162-2 (FL+) - Body ground Always 10 kΩ or higher
      H162-6 (FL-) - Body ground Always 10 kΩ or higher
      H163-1 (RR+) - Body ground Always 10 kΩ or higher
      H163-3 (RR-) - Body ground Always 10 kΩ or higher
      H163-2 (RL+) - Body ground Always 10 kΩ or higher
      H163-6 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (RADIO SETTING CONDENSER - BODY GROUND)


    1. Disconnect the H46 radio setting condenser connector.

    2. Disconnect the I3 and I5 front No. 2 speaker assembly connectors.

    3. Measure the resistance between the radio setting condenser and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H46-8 (RI+) - Body ground Always 10 kΩ or higher
      H46-7 (RI-) - Body ground Always 10 kΩ or higher
      H46-4 (LI+) - Body ground Always 10 kΩ or higher
      H46-5 (LI-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


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

    2. B001LWUE01
      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

  5. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


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

    2. B001LMWE30
      Text in Illustration
      *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
      1 - 2 Always 3.2 to 4.8 Ω

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  6. REPLACE RADIO SETTING CONDENSER


    1. Replace the radio setting condenser 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.

    OK

    END

    NG

  7. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly Click here.

    2. B001LWUE01
      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

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

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


    1. Disconnect the H157 stereo component amplifier assembly connector.

    2. Disconnect the J1 and K1 front No. 1 speaker assembly connectors.

    3. Disconnect the I3 and I5 front No. 2 speaker assembly connectors.

    4. Disconnect the L4 and M4 rear speaker assembly connectors.

    5. Disconnect the P15 No. 1 speaker assembly with box connector.

    6. Disconnect the I4 and I6 front No. 3 speaker assembly connectors.

    7. Disconnect the I2 front No. 4 speaker assembly connector.

    8. 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
      H157-13 (FR+) - Body ground Always 10 kΩ or higher
      H157-28 (FR-) - Body ground Always 10 kΩ or higher
      H157-12 (FL+) - Body ground Always 10 kΩ or higher
      H157-27 (FL-) - Body ground Always 10 kΩ or higher
      H157-5 (MR+) - Body ground Always 10 kΩ or higher
      H157-20 (MR-) - Body ground Always 10 kΩ or higher
      H157-15 (RR+) - Body ground Always 10 kΩ or higher
      H157-30 (RR-) - Body ground Always 10 kΩ or higher
      H157-14 (RL+) - Body ground Always 10 kΩ or higher
      H157-29 (RL-) - Body ground Always 10 kΩ or higher
      H157-4 (ML+) - Body ground Always 10 kΩ or higher
      H157-19 (ML-) - Body ground Always 10 kΩ or higher
      H157-7 (CTR+) - Body ground Always 10 kΩ or higher
      H157-22 (CTR-) - Body ground Always 10 kΩ or higher
      H157-6 (WF1+) - Body ground Always 10 kΩ or higher
      H157-21 (WF1-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


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

    2. B001KTVE02
      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

  10. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


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

    2. B001LMWE33
      Text in Illustration
      *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
      1 - 2 Always 3.2 to 4.8 Ω

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  11. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. Remove the front No. 3 speaker assembly Click here.

    2. B001LXRE06
      Text in Illustration
      *a

      Component without harness connected

      (Front No. 3 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 10 kΩ or higher

    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  12. REPLACE FRONT NO. 3 SPEAKER ASSEMBLY


    1. Replace the front No. 3 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. 3 speaker assemblies that were disconnected.

      • When there is a possibility that either the right or left front No. 3 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.


    OK

    END

    NG

  13. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly Click here.

    2. B001KTVE02
      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

  14. INSPECT FRONT NO. 4 SPEAKER ASSEMBLY


    1. Remove the front No. 4 speaker assembly Click here.

    2. B001LMWE33
      Text in Illustration
      *a

      Component without harness connected

      (Front No. 4 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. 4 SPEAKER ASSEMBLY Click here

    OK

  15. INSPECT NO. 1 SPEAKER ASSEMBLY WITH BOX


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

    2. B001MTLE09
      Text in Illustration
      *a

      Component without harness connected

      (No. 1 Speaker Assembly with Box)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (WF1+) - 4 (WF1-) Always 1.6 to 2.4 Ω

    OK

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    NG

    REPLACE NO. 1 SPEAKER ASSEMBLY WITH BOX Click here