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

DESCRIPTION

The radio and display receiver assembly sends sound signals to the speakers.

WIRING DIAGRAM

A01IQENE09

INSPECTION PROCEDURE

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. INSPECT 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 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.

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

    B

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

    A

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

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


    1. Disconnect the H107 radio and display receiver assembly connector.

    2. Disconnect the H41*1 and/or H42*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
      H107-1 (FR+) - H41-4 (+) Always Below 1 Ω
      H107-5 (FR-) - H41-2 (-)
      H107-1 (FR+) - Body ground Always 10 kΩ or higher
      H107-5 (FR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      H107-2 (FL+) - H42-4 (+) Always Below 1 Ω
      H107-6 (FL-) - H42-2 (-)
      H107-2 (FL+) - Body ground Always 10 kΩ or higher
      H107-6 (FL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

  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.


    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 H41*1 and/or H42*2 front No. 2 speaker assembly connector.

    2. Disconnect the J12*1 and/or K12*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
      H41-3 (TWR+) - J12-1 Always Below 1 Ω
      H41-1 (TWR-) - J12-2
      H41-3 (TWR+) - Body ground Always 10 kΩ or higher
      H41-1 (TWR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      H42-3 (TWL+) - K12-1 Always Below 1 Ω
      H42-1 (TWL-) - K12-2
      H42-3 (TWL+) - Body ground Always 10 kΩ or higher
      H42-1 (TWL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

  7. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly Click here.

    2. Inspect the rear speaker assembly Click here.


    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

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


    1. Disconnect the H108 radio and display receiver assembly connector.

    2. Disconnect the L5*1 and/or M5*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
      H108-1 (RR+) - L5-1 Always Below 1 Ω
      H108-3 (RR-) - L5-2
      H108-1 (RR+) - Body ground Always 10 kΩ or higher
      H108-3 (RR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      H108-2 (RL+) - M5-1 Always Below 1 Ω
      H108-6 (RL-) - M5-2
      H108-2 (RL+) - Body ground Always 10 kΩ or higher
      H108-6 (RL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here