AUDIO AND VISUAL SYSTEM(for Radio and Display Type) Speaker Circuit (Independent Amplifier)

DESCRIPTION

The radio and display receiver assembly and stereo component amplifier assembly send sound signals to the speakers.

WIRING DIAGRAM

A004TG7E02

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

    CHECK SPEAKER Click here

    A

  2. CHECK SPEAKER


    1. Check the malfunctioning speakers.

      Result
      Result Proceed to
      Front No. 1 speaker assembly LH/RH A
      Front No. 2 speaker assembly LH/RH B
      Front No. 3 speaker assembly C

    B

    CHECK FRONT NO. 2 SPEAKER ASSEMBLY Click here

    C

    INSPECT FRONT NO. 3 SPEAKER ASSEMBLY Click here

    A

  3. 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.


    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

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


    1. Disconnect the H20 stereo component amplifier assembly connector.

    2. Disconnect the E1*1 and/or E11*2 front No. 1 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
      H20-3 (WFR+) - E1-1 Always Below 1 Ω
      H20-8 (WFR-) - E1-2 Always Below 1 Ω
      H20-3 (WFR+) - Body ground Always 10 kΩ or higher
      H20-8 (WFR-) - Body ground Always 10 kΩ or higher
      for LH Side
      Tester Connection Condition Specified Condition
      H20-4 (WFL+) - E11-1 Always Below 1 Ω
      H20-11 (WFL-) - E11-2 Always Below 1 Ω
      H20-4 (WFL+) - Body ground Always 10 kΩ or higher
      H20-11 (WFL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the H20 stereo component amplifier assembly connector.

    2. Disconnect the D52*1 and/or D53*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
      H20-2 (RR+) - D52-2 (TWR+) Always Below 1 Ω
      H20-7 (RR-) - D52-4 (TWR-) Always Below 1 Ω
      H20-2 (RR+) - Body ground Always 10 kΩ or higher
      H20-7 (RR-) - Body ground Always 10 kΩ or higher
      for LH Side
      Tester Connection Condition Specified Condition
      H20-1 (RL+) - D53-2 (TWL+) Always Below 1 Ω
      H20-6 (RL-) - D53-4 (TWL-) Always Below 1 Ω
      H20-1 (RL+) - Body ground Always 10 kΩ or higher
      H20-6 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. 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.


    OK

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

  7. CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Temporarily replace the front No. 2 front speaker assembly with a known good one Click here.

    2. Check that the 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 LH and RH sides.

      OK
      Malfunction disappears.

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

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


    1. Disconnect the D125 radio and display receiver assembly connector.

    2. Disconnect the D52*1 and/or D53*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
      D125-1 (FR+) - D52-1 (+) Always Below 1 Ω
      D125-5 (FR-) - D52-3 (-) Always Below 1 Ω
      D125-1 (FR+) - Body ground Always 10 kΩ or higher
      D125-5 (FR-) - Body ground Always 10 kΩ or higher
      for LH Side
      Tester Connection Condition Specified Condition
      D125-2 (FL+) - D53-1 (+) Always Below 1 Ω
      D125-6 (FL-) - D53-3 (-) Always Below 1 Ω
      D125-2 (FL+) - Body ground Always 10 kΩ or higher
      D125-6 (FL-) - Body ground Always 10 kΩ or higher

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. 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.


    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  10. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - FRONT NO. 3 SPEAKER ASSEMBLY)


    1. Disconnect the D125 radio and display receiver assembly connector.

    2. Disconnect the D51 front No. 3 speaker assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D125-1 (FR+) - D51-4 (+) Always Below 1 Ω
      D125-5 (FR-) - D51-3 (-) Always Below 1 Ω
      D125-2 (FL+) - D51-2 (CTR+) Always Below 1 Ω
      D125-6 (FL-) - D51-1 (CTR-) Always Below 1 Ω
      D125-1 (FR+) - Body ground Always 10 kΩ or higher
      D125-5 (FR-) - Body ground Always 10 kΩ or higher
      D125-2 (FL+) - Body ground Always 10 kΩ or higher
      D125-6 (FL-) - Body ground Always 10 kΩ or higher

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  11. CHECK SPEAKER


    1. Check the malfunctioning speakers.

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

    B

    CHECK REAR NO. 2 SPEAKER ASSEMBLY Click here

    A

  12. INSPECT REAR NO. 1 SPEAKER ASSEMBLY


    1. Remove the rear No. 1 speaker assembly Click here.

    2. Inspect the rear No. 1 speaker assembly Click here.


    NG

    REPLACE REAR NO. 1 SPEAKER ASSEMBLY Click here

    OK

  13. CHECK HARNESS AND CONNECTOR (REAR NO. 1 SPEAKER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY)

    *1: for RH Side

    *2: for LH Side


    1. Disconnect the F11*1 and/or F12*2 rear No. 1 speaker assembly connector.

    2. Disconnect the F3*1 and/or F8*2 rear No. 2 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
      F11-1 - F3-3 (+TW) Always Below 1 Ω
      F11-2 - F3-1 (-TW) Always Below 1 Ω
      F11-1 - Body ground Always 10 kΩ or higher
      F11-2 - Body ground Always 10 kΩ or higher
      for LH Side
      Tester Connection Condition Specified Condition
      F12-1 - F8-3 (+TW) Always Below 1 Ω
      F12-2 - F8-1 (-TW) Always Below 1 Ω
      F12-1 - Body ground Always 10 kΩ or higher
      F12-2 - Body ground Always 10 kΩ or higher

    OK

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  14. CHECK REAR NO. 2 SPEAKER ASSEMBLY


    1. Temporarily replace the rear No. 2 speaker assembly with a known good one Click here.

    2. Check that the 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 rear speaker is defective, inspect by interchanging the right one with the left one.

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

      OK
      Malfunction disappears.

    OK

    END (REAR NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  15. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the D126 radio and display receiver assembly connector.

    2. Disconnect the F3*1 and/or F8*2 rear 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
      D126-1 (RR+) - F3-4 (+) Always Below 1 Ω
      D126-3 (RR-) - F3-2 (-) Always Below 1 Ω
      D126-1 (RR+) - Body ground Always 10 kΩ or higher
      D126-3 (RR-) - Body ground Always 10 kΩ or higher
      for LH Side
      Tester Connection Condition Specified Condition
      D126-2 (RL+) - F8-4 (+) Always Below 1 Ω
      D126-6 (RL-) - F8-2 (-) Always Below 1 Ω
      D126-2 (RL+) - Body ground Always 10 kΩ or higher
      D126-6 (RL-) - Body ground Always 10 kΩ or higher

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR