AUDIO AND VISUAL SYSTEM(for 8 Speakers) Speaker Circuit

DESCRIPTION

If there is a short in a speaker circuit, the stereo component amplifier assembly*1 or radio receiver assembly*2 detects it and stops output to the speakers.

As a result, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly*1 or radio receiver assembly*2 or speakers.


WIRING DIAGRAM

A01XO6DE01
A01XOQ5E01
A01XOJ4E02

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    • *1: for LH Side

      *2: for RH Side

      *3: for LHD

      *4: for RHD

      *5: w/ Stereo Component Amplifier

      *6: w/o Stereo Component Amplifier


    1. Disconnect the P32 stereo component amplifier assembly connector*5.

    2. Disconnect the I119 and I120 radio receiver assembly connectors*6.

    3. Disconnect the M9*1 and/or L9*2 front No. 1 speaker assembly connector.

    4. for LHD:

      Disconnect the J9*1 and/or J8*2 front No. 2 speaker assembly connector.

    5. for RHD:

      Disconnect the J8*1 and/or J9*2 front No. 2 speaker assembly connector.

    6. Disconnect the O5*1 and/or N6*2 rear speaker assembly connector.

    7. Disconnect the O6*1 and/or N5*2 rear No. 2 speaker assembly connector.

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

      Standard Resistance
      for LH Side (w/ Stereo Component Amplifier):
      Tester Connection Condition Specified Condition
      P32-4 (WFL+) - M9-1 Always Below 1 Ω
      P32-19 (WFL-) - M9-2 Always Below 1 Ω
      P32-12 (FL+) - J9-4 (+)*3 Always Below 1 Ω
      P32-12 (FL+) - J8-4 (+)*4 Always Below 1 Ω
      P32-27 (FL-) - J9-2 (-)*3 Always Below 1 Ω
      P32-27 (FL-) - J8-2 (-)*4 Always Below 1 Ω
      P32-14 (RL+) - O6-3 (+TW) Always Below 1 Ω
      P32-29 (RL-) - O6-1 (-TW) Always Below 1 Ω
      O6-4 (+) - O5-1 Always Below 1 Ω
      O6-2 (-) - O5-2 Always Below 1 Ω
      P32-4 (WFL+) or M9-1 - Body ground Always 10 kΩ or higher
      P32-19 (WFL-) or M9-2 - Body ground Always 10 kΩ or higher
      P32-12 (FL+) or J9-4 (+) - Body ground*3 Always 10 kΩ or higher
      P32-12 (FL+) or J8-4 (+) - Body ground*4 Always 10 kΩ or higher
      P32-27 (FL-) or J9-2 (-) - Body ground*3 Always 10 kΩ or higher
      P32-27 (FL-) or J8-2 (-) - Body ground*4 Always 10 kΩ or higher
      P32-14 (RL+) or O6-3 (+TW) - Body ground Always 10 kΩ or higher
      P32-29 (RL-) or O6-1 (-TW) - Body ground Always 10 kΩ or higher
      O6-4 (+) or O5-1 - Body ground Always 10 kΩ or higher
      O6-2 (-) or O5-2 - Body ground Always 10 kΩ or higher
      for LH Side (w/o Stereo Component Amplifier):
      Tester Connection Condition Specified Condition
      I120-2 (FL+) - J9-3 (+TW)*3 Always Below 1 Ω
      I120-2 (FL+) - J8-3 (+TW)*4 Always Below 1 Ω
      I120-6 (FL-) - J9-1 (-TW)*3 Always Below 1 Ω
      I120-6 (FL-) - J8-1 (-TW)*4 Always Below 1 Ω
      J9-4 (+) - M9-1*3 Always Below 1 Ω
      J8-4 (+) - M9-1*4 Always Below 1 Ω
      J9-2 (-) - M9-2*3 Always Below 1 Ω
      J8-2 (-) - M9-2*4 Always Below 1 Ω
      I119-2 (RL+) - O6-3 (+TW) Always Below 1 Ω
      I119-6 (RL-) - O6-1 (-TW) Always Below 1 Ω
      O6-4 (+) - O5-1 Always Below 1 Ω
      O6-2 (-) - O5-2 Always Below 1 Ω
      I120-2 (FL+) or J9-3 (+TW) - Body ground*3 Always 10 kΩ or higher
      I120-2 (FL+) or J8-3 (+TW) - Body ground*4 Always 10 kΩ or higher
      I120-6 (FL-) or J9-1 (-TW) - Body ground*3 Always 10 kΩ or higher
      I120-6 (FL-) or J8-1 (-TW) - Body ground*4 Always 10 kΩ or higher
      J9-4 (+) or M9-1 - Body ground*3 Always 10 kΩ or higher
      J8-4 (+) or M9-1 - Body ground*4 Always 10 kΩ or higher
      J9-2 (-) or M9-2 - Body ground*3 Always 10 kΩ or higher
      J8-2 (-) or M9-2 - Body ground*4 Always 10 kΩ or higher
      I119-2 (RL+) or O6-3 (+TW) - Body ground Always 10 kΩ or higher
      I119-6 (RL-) or O6-1 (-TW) - Body ground Always 10 kΩ or higher
      O6-4 (+) or O5-1 - Body ground Always 10 kΩ or higher
      O6-2 (-) or O5-2 - Body ground Always 10 kΩ or higher
      for RH Side (w/ Stereo Component Amplifier):
      Tester Connection Condition Specified Condition
      P32-5 (WFR+) - L9-1 Always Below 1 Ω
      P32-20 (WFR-) - L9-2 Always Below 1 Ω
      P32-13 (FR+) - J8-4 (+)*3 Always Below 1 Ω
      P32-13 (FR+) - J9-4 (+)*4 Always Below 1 Ω
      P32-28 (FR-) - J8-2 (-)*3 Always Below 1 Ω
      P32-28 (FR-) - J9-2 (-)*4 Always Below 1 Ω
      P32-15 (RR+) - N5-3 (+TW) Always Below 1 Ω
      P32-30 (RR-) - N5-1 (-TW) Always Below 1 Ω
      N5-4 (+) - N6-1 Always Below 1 Ω
      N5-2 (-) - N6-2 Always Below 1 Ω
      P32-5 (WFR+) or L9-1 - Body ground Always 10 kΩ or higher
      P32-20 (WFR-) or L9-2 - Body ground Always 10 kΩ or higher
      P32-13 (FR+) or J8-4 (+) - Body ground*3 Always 10 kΩ or higher
      P32-13 (FR+) or J9-4 (+) - Body ground*4 Always 10 kΩ or higher
      P32-28 (FR-) - J8-2 (-) - Body ground*3 Always 10 kΩ or higher
      P32-28 (FR-) - J9-2 (-) - Body ground*4 Always 10 kΩ or higher
      P32-15 (RR+) or N5-3 (+TW) - Body ground Always 10 kΩ or higher
      P32-30 (RR-) or N5-1 (-TW) - Body ground Always 10 kΩ or higher
      N5-4 (+) or N6-1 - Body ground Always 10 kΩ or higher
      N5-2 (-) or N6-2 - Body ground Always 10 kΩ or higher
      for RH Side (w/o Stereo Component Amplifier):
      Tester Connection Condition Specified Condition
      I120-1 (FR+) - J8-3 (+TW)*3 Always Below 1 Ω
      I120-1 (FR+) - J9-3 (+TW)*4 Always Below 1 Ω
      I120-5 (FR-) - J8-1 (-TW)*3 Always Below 1 Ω
      I120-5 (FR-) - J9-1 (-TW)*4 Always Below 1 Ω
      J8-4 (+) - L9-1*3 Always Below 1 Ω
      J9-4 (+) - L9-1*4 Always Below 1 Ω
      J8-2 (-) - L9-2*3 Always Below 1 Ω
      J9-2 (-) - L9-2*4 Always Below 1 Ω
      I119-1 (RR+) - N5-3 (+TW) Always Below 1 Ω
      I119-3 (RR-) - N5-1 (-TW) Always Below 1 Ω
      N5-4 (+) - N6-1 Always Below 1 Ω
      N5-2 (-) - N6-2 Always Below 1 Ω
      I120-1 (FR+) or J8-3 (+TW) - Body ground*3 Always 10 kΩ or higher
      I120-1 (FR+) or J9-3 (+TW) - Body ground*4 Always 10 kΩ or higher
      I120-5 (FR-) or J8-1 (-TW) - Body ground*3 Always 10 kΩ or higher
      I120-5 (FR-) or J9-1 (-TW) - Body ground*4 Always 10 kΩ or higher
      J8-4 (+) or L9-1 - Body ground*3 Always 10 kΩ or higher
      J9-4 (+) or L9-1 - Body ground*4 Always 10 kΩ or higher
      J8-2 (-) or L9-2 - Body ground*3 Always 10 kΩ or higher
      J9-2 (-) or L9-2 - Body ground*4 Always 10 kΩ or higher
      I119-1 (RR+) or N5-3 (+TW) - Body ground Always 10 kΩ or higher
      I119-3 (RR-) or N5-1 (-TW) - Body ground Always 10 kΩ or higher
      N5-4 (+) or N6-1 - Body ground Always 10 kΩ or higher
      N5-2 (-) or N6-2 - 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. Inspect the front No. 1 speaker assembly.

      Click here

      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. Inspect the rear speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

  4. CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker assembly.

      Click here

    2. Check the malfunction disappears.

      OK
      Malfunction disappears.

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

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

      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  5. CHECK REAR NO. 2 SPEAKER ASSEMBLY


    1. Replace the rear No. 2 speaker assembly.

      Click here

    2. Check the malfunction disappears.

      OK
      Malfunction disappears.

      Tech Tips


      • Connect all the connectors to the rear No. 2 speaker assemblies that were disconnected.

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

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

      Result
      Proceed to
      OK
      NG

    OK

    END (REAR NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

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