AUDIO AND VISUAL SYSTEM Speaker Circuit

DESCRIPTION


WIRING DIAGRAM

A003K80E95

PROCEDURE


  1. CHECK SPEAKER (OPERATION CHECK)


    1. A003OFH

      Enter the "System Check Mode" screen. Refer to Check Speaker in Operation Check.

      Click here

    2. Perform the operation check above and determine the speaker that is not operating.

      Result
      Not Operating Speaker Proceed to
      Front No. 1 speaker assembly or front No. 2 speaker assembly A
      Rear speaker assembly B

      Tech Tips

      If sound cannot be heard from any speaker, inspect all of them.


    B

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the I97 radio and display receiver assembly connector.

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

    3. Disconnect the G4 and G6 front No. 2 speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I97-1 (FR+) - G4-4 (TWR+) Always Below 1 Ω
      I97-5 (FR-) - G4-2 (TWR-) Always Below 1 Ω
      I97-2 (FL+) - G6-4 (TWL+) Always Below 1 Ω
      I97-6 (FL-) - G6-2 (TWL-) Always Below 1 Ω
      J1-1 - G4-3 (+) Always Below 1 Ω
      J1-2 - G4-1 (-) Always Below 1 Ω
      K1-1 - G6-3 (+) Always Below 1 Ω
      K1-2 - G6-1 (-) Always Below 1 Ω
      I97-1 (FR+) or G4-4 (TWR+) - Body ground Always 10 kΩ or higher
      I97-5 (FR-) or G4-2 (TWR-) - Body ground Always 10 kΩ or higher
      I97-2 (FL+) or G6-4 (TWL+) - Body ground Always 10 kΩ or higher
      I97-6 (FL-) or G6-2 (TWL-) - Body ground Always 10 kΩ or higher
      J1-1 or G4-3 (+) - Body ground Always 10 kΩ or higher
      J1-2 or G4-1 (-) - Body ground Always 10 kΩ or higher
      K1-1 or G6-3 (+) - Body ground Always 10 kΩ or higher
      K1-2 or G6-1 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

      Click here

    2. Inspect the front No. 2 speaker assembly.

      Click here

    3. Check that the malfunction disappears when a new or known good front No. 2 speaker assembly is installed.

      OK
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

  4. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly.

      Click here

    2. Inspect the front No. 1 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

  5. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY)


    1. Disconnect the I98 radio and display receiver assembly connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I98-1 (RR+) - L4-1 Always Below 1 Ω
      I98-3 (RR-) - L4-2 Always Below 1 Ω
      I98-2 (RL+) - M4-1 Always Below 1 Ω
      I98-6 (RL-) - M4-2 Always Below 1 Ω
      I98-1 (RR+) or L4-1 - Body ground Always 10 kΩ or higher
      I98-3 (RR-) or L4-2 - Body ground Always 10 kΩ or higher
      I98-2 (RL+) or M4-1 - Body ground Always 10 kΩ or higher
      I98-6 (RL-) or M4-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      Click here

    2. Inspect the rear speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here