AUDIO AND VISUAL SYSTEM(for 10.3 Inch Display) Speaker Circuit

DESCRIPTION

If there is a short in a speaker circuit, the stereo component amplifier assembly 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 or speakers.

WIRING DIAGRAM

B002JIPE02
B002HWQE02

CAUTION / NOTICE / HINT

Tech Tips

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.

Click here

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for LH Side

      *2: for RH Side

      *3: for 14 Speakers


    1. Disconnect the P22 stereo component amplifier assembly connector.

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

    3. Disconnect the J2*1 and/or J1*2 front No. 2 speaker assembly connector.

    4. Disconnect the J3 front No. 3 speaker assembly connector.

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

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

    7. Disconnect the Y20 rear No. 3 speaker assembly connector.

    8. Disconnect the Q19*1 and/or P17*2 rear header speaker assembly connector.*3

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

      Standard Resistance
      for LH Side:
      Tester Connection Condition Specified Condition
      P22-4 (WFL+) - M9-1 Always Below 1 Ω
      P22-19 (WFL-) - M9-2 Always Below 1 Ω
      P22-12 (FL+) - J2-2 Always Below 1 Ω
      P22-27 (FL-) - J2-1 Always Below 1 Ω
      P22-8 (RL+) - O6-3 (+TW) Always Below 1 Ω
      P22-23 (RL-) - O6-1 (-TW) Always Below 1 Ω
      O6-4 (+) - O5-1 Always Below 1 Ω
      O6-2 (-) - O5-2 Always Below 1 Ω
      P22-10 (SL+) - Q19-2* Always Below 1 Ω
      P22-25 (SL-) - Q19-1* Always Below 1 Ω
      P22-4 (WFL+) - Body ground Always 10 kΩ or higher
      P22-19 (WFL-) - Body ground Always 10 kΩ or higher
      P22-12 (FL+) - Body ground Always 10 kΩ or higher
      P22-27 (FL-) - Body ground Always 10 kΩ or higher
      P22-8 (RL+) - Body ground Always 10 kΩ or higher
      P22-23 (RL-) - Body ground Always 10 kΩ or higher
      O6-4 (+) - Body ground Always 10 kΩ or higher
      O6-2 (-) - Body ground Always 10 kΩ or higher
      P22-10 (SL+) - Body ground* Always 10 kΩ or higher
      P22-25 (SL-) - Body ground* Always 10 kΩ or higher
      *: for 14 Speakers
      for RH Side:
      Tester Connection Condition Specified Condition
      P22-5 (WFR+) - L9-1 Always Below 1 Ω
      P22-20 (WFR-) - L9-2 Always Below 1 Ω
      P22-13 (FR+) - J1-2 Always Below 1 Ω
      P22-28 (FR-) - J1-1 Always Below 1 Ω
      P22-9 (RR+) - N5-3 (+TW) Always Below 1 Ω
      P22-24 (RR-) - N5-1 (-TW) Always Below 1 Ω
      N5-4 (+) - N6-1 Always Below 1 Ω
      N5-2 (-) - N6-2 Always Below 1 Ω
      P22-11 (SR+) - P17-2* Always Below 1 Ω
      P22-26 (SR-) - P17-1* Always Below 1 Ω
      P22-5 (WFR+) - Body ground Always 10 kΩ or higher
      P22-20 (WFR-) - Body ground Always 10 kΩ or higher
      P22-13 (FR+) - Body ground Always 10 kΩ or higher
      P22-28 (FR-) - Body ground Always 10 kΩ or higher
      P22-9 (RR+) - Body ground Always 10 kΩ or higher
      P22-24 (RR-) - Body ground Always 10 kΩ or higher
      N5-4 (+) - Body ground Always 10 kΩ or higher
      N5-2 (-) - Body ground Always 10 kΩ or higher
      P22-11 (SR+) - Body ground* Always 10 kΩ or higher
      P22-26 (SR-) - Body ground* Always 10 kΩ or higher
      *: for 14 Speakers
      for Center Side:
      Tester Connection Condition Specified Condition
      P22-7 (CTR+) - J3-2 Always Below 1 Ω
      P22-22 (CTR-) - J3-1 Always Below 1 Ω
      P22-6 (WF1+) - Y20-1 Always Below 1 Ω
      P22-21 (WF1-) - Y20-2 Always Below 1 Ω
      P22-7 (CTR+) - Body ground Always 10 kΩ or higher
      P22-22 (CTR-) - Body ground Always 10 kΩ or higher
      P22-6 (WF1+) - Body ground Always 10 kΩ or higher
      P22-21 (WF1-) - 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 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

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  4. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. Remove the front No. 3 speaker assembly.

      Click here

    2. Inspect the front No. 3 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  5. 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

  6. INSPECT REAR NO. 3 SPEAKER ASSEMBLY


    1. Remove the rear No. 3 speaker assembly.

      Click here

    2. Inspect the rear No. 3 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR NO. 3 SPEAKER ASSEMBLY Click here

    OK

  7. CHECK VEHICLE TYPE


    1. Check the vehicle type.

      Result
      Result Proceed to
      for 14 Speakers A
      for 10 Speakers B

    B

    GO TO STEP 9 Click here

    A

  8. INSPECT REAR HEADER SPEAKER ASSEMBLY


    1. Remove the rear header speaker assembly.

      Click here

    2. Inspect the rear header speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR HEADER SPEAKER ASSEMBLY Click here

    OK

  9. CHECK REAR NO. 2 SPEAKER ASSEMBLY


    1. Replace the rear No. 2 speaker assembly with a new or known good one.

      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

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here