AUDIO AND VISUAL SYSTEM(for Radio Receiver Type) Speaker Circuit

DESCRIPTION

The radio receiver assembly sends sound signals to the speakers.

WIRING DIAGRAM

A004T4QE03

PROCEDURE


  1. CHECK SPEAKER


    1. Check the malfunctioning speakers.

      Result
      Result Proceed to
      Malfunction in front speaker area A
      Malfunction in rear speaker area B

    B

    INSPECT REAR SPEAKER ASSEMBLY Click here

    A

  2. CHECK FRONT SIDE SPEAKER


    1. Check the malfunctioning speakers.

      Result
      Result Proceed to
      Front No. 2 speaker assembly A
      Front No. 1 speaker assembly B

    B

    INSPECT FRONT NO. 1 SPEAKER ASSEMBLY Click here

    A

  3. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Temporarily replace the front No. 2 speaker assembly with a new or normally functioning one Click here.

    2. Check that the malfunction disappears.

      Tech Tips


      • Connect all the speaker connectors to the speakers.

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

      Result
      Result Proceed to
      Malfunction disappears A
      Malfunction does not disappear B

    A

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    B

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


    1. Disconnect the D1 radio receiver assembly connector.

    2. Disconnect the D39*1 and/or D40*2 front No. 2 speaker assembly connector.


      • *1: for RH Side

      • *2: for LH Side

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

      Standard Resistance
      for RH Side
      Tester Connection Condition Specified Condition
      D1-1 (FR+) - D39-4 (+) Always Below 1 Ω
      D1-5 (FR-) - D39-2 (-)
      D1-1 (FR+) - Body ground Always 10 kΩ or higher
      D1-5 (FR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      D1-2 (FL+) - D40-4 (+) Always Below 1 Ω
      D1-6 (FL-) - D40-2 (-)
      D1-2 (FL+) - Body ground Always 10 kΩ or higher
      D1-6 (FL-) - Body ground

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. A004NS1

      Disconnect the E1*1 and/or E11*2 front No. 1 speaker assembly connector.


      • *1: for RH Side

      • *2: for LH Side

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 4 Ω

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)


    • *1: for RH Side

    • *2: for LH Side


    1. Disconnect the D39*1 and/or D40*2 front No. 2 speaker assembly connector.

    2. Disconnect the E1*1 and/or E11*2 front No. 1 speaker assembly connector.

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

      Standard Resistance
      for RH Side
      Tester Connection Condition Specified Condition
      D39-3 (TWR+) - E1-1 Always Below 1 Ω
      D39-1 (TWR-) - E1-2
      D39-3 (TWR+) - Body ground Always 10 kΩ or higher
      D39-1 (TWR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      D40-3 (TWL+) - E11-1 Always Below 1 Ω
      D40-1 (TWL-) - E11-2
      D40-3 (TWL+) - Body ground Always 10 kΩ or higher
      D40-1 (TWL-) - Body ground

    OK

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. INSPECT REAR SPEAKER ASSEMBLY


    1. A004QVH

      Disconnect the F2*1 and/or F7*2 rear speaker assembly connector.


      • *1: for RH Side

      • *2: for LH Side

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 4 Ω

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

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


    1. Disconnect the D2 radio receiver assembly connector.

    2. Disconnect the F2*1 and/or F7*2 rear speaker assembly connector.


      • *1: for RH Side

      • *2: for LH Side

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

      Standard Resistance
      for RH Side
      Tester Connection Condition Specified Condition
      D2-1 (RR+) - F2-1 Always Below 1 Ω
      D2-3 (RR-) - F2-2
      D2-1 (RR+) - Body ground Always 10 kΩ or higher
      D2-3 (RR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      D2-2 (RL+) - F7-1 Always Below 1 Ω
      D2-6 (RL-) - F7-2
      D2-2 (RL+) - Body ground Always 10 kΩ or higher
      D2-6 (RL-) - Body ground

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR