NAVIGATION SYSTEM(for Navigation Receiver Type) Speaker Circuit

DESCRIPTION


WIRING DIAGRAM

A003MS7E02

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. 2 speaker assembly A
      Front No. 1 speaker assembly B
      Rear speaker assembly C

      Tech Tips

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


    B

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY) Click here

    C

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR SPEAKER ASSEMBLY) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the I63 stereo component amplifier assembly connector.

    2. Disconnect the G5 and G7 front No. 2 speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I63-13 (TWR+) - G5-4 Always Below 1 Ω
      I63-28 (TWR-) - G5-3 Always Below 1 Ω
      I63-10 (TWL+) - G7-4 Always Below 1 Ω
      I63-25 (TWL-) - G7-3 Always Below 1 Ω
      I63-13 (TWR+) or G5-4 - Body ground Always 10 kΩ or higher
      I63-28 (TWR-) or G5-3 - Body ground Always 10 kΩ or higher
      I63-10 (TWL+) or G7-4 - Body ground Always 10 kΩ or higher
      I63-25 (TWL-) or G7-3 - 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

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

  4. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)


    1. Disconnect the I63 stereo component amplifier assembly connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I63-15 (FR+) - J1-1 Always Below 1 Ω
      I63-30 (FR-) - J1-2 Always Below 1 Ω
      I63-8 (FL+) - K1-1 Always Below 1 Ω
      I63-23 (FL-) - K1-2 Always Below 1 Ω
      I63-15 (FR+) or J1-1 - Body ground Always 10 kΩ or higher
      I63-30 (FR-) or J1-2 - Body ground Always 10 kΩ or higher
      I63-8 (FL+) or K1-1 - Body ground Always 10 kΩ or higher
      I63-23 (FL-) or K1-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. 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

  6. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR SPEAKER ASSEMBLY)


    1. Disconnect the I63 stereo component amplifier assembly connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I63-11 (RR+) - L4-1 Always Below 1 Ω
      I63-26 (RR-) - L4-2 Always Below 1 Ω
      I63-12 (RL+) - M4-1 Always Below 1 Ω
      I63-27 (RL-) - M4-2 Always Below 1 Ω
      I63-11 (RR+) or L4-1 - Body ground Always 10 kΩ or higher
      I63-26 (RR-) or L4-2 - Body ground Always 10 kΩ or higher
      I63-12 (RL+) or M4-1 - Body ground Always 10 kΩ or higher
      I63-27 (RL-) or M4-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      Click here

    2. Inspect the rear speaker assembly.

      Click here

    3. Check that the malfunction disappears when a new or known good rear speaker assembly is installed.

      OK
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

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