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

DESCRIPTION

The radio receiver assembly sends sound signals to the speakers.

WIRING DIAGRAM

A01E002E32

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK SPEAKER


    1. Check the malfunctioning speakers.

      Result
      Result Proceed to
      Malfunction in front speaker area (for 6 Speakers) A
      Malfunction in front speaker area (except 6 Speakers) B
      Malfunction in rear speaker area (except 2 Speakers) C

    B

    INSPECT FRONT NO. 1 SPEAKER ASSEMBLY Click here

    C

    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 speaker 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 does not disappear A
      Malfunction disappears B

    B

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    A

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


    1. Disconnect the R1 radio receiver assembly connector.

    2. Disconnect the T24*1 and/or T23*2 speaker connector.


      • *1: for RH

      • *2: for LH

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      R1-1 (FR+) - T24-4 Always Below 1 Ω
      R1-5 (FR-) - T24-2
      R1-1 (FR+) - Body ground Always 10 kΩ or higher
      R1-5 (FR-) - Body ground
      for LH
      Tester Connection Condition Specified Condition
      R1-2 (FL+) - T23-4 Always Below 1 Ω
      R1-6 (FL-) - T23-2
      R1-2 (FL+) - Body ground Always 10 kΩ or higher
      R1-6 (FL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

  5. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. A01E048

      Disconnect the S16*1 and/or S15*2 speaker connector.


      • *1: for RH

      • *2: for LH

    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
      Result
      Result Proceed to
      OK (for 6 Speakers) A
      OK (except 6 Speakers) B
      NG C

    B

    CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - FRONT NO. 1 SPEAKER) Click here

    C

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    A

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


    • *1: for RH

    • *2: for LH


    1. Disconnect the T24*1 and/or T23*2 speaker connector.

    2. Disconnect the S16*1 and/or S15*2 speaker connector.

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      T24-3 (+) - S16-1 Always Below 1 Ω
      T24-1 (-) - S16-2
      T24-3 (+) - Body ground Always 10 kΩ or higher
      T24-1 (-) - Body ground
      for LH
      Tester Connection Condition Specified Condition
      T23-3 (+) - S15-1 Always Below 1 Ω
      T23-1 (-) - S15-2
      T23-3 (+) - Body ground Always 10 kΩ or higher
      T23-1 (-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

  7. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - FRONT NO. 1 SPEAKER)


    1. Disconnect the R1 radio receiver assembly connector.

    2. Disconnect the S16*1 and/or S15*2 speaker connector.


      • *1: for RH

      • *2: for LH

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

      Standard Resistance
      for RH
      Tester Connection Condition Specified Condition
      R1-1 (FR+) - S16-1 Always Below 1 Ω
      R1-5 (FR-) - S16-2
      R1-1 (FR+) - Body ground Always 10 kΩ or higher
      R1-5 (FR-) - Body ground
      for LH
      Tester Connection Condition Specified Condition
      R1-2 (FL+) - S15-1 Always Below 1 Ω
      R1-6 (FL-) - S15-2
      R1-2 (FL+) - Body ground Always 10 kΩ or higher
      R1-6 (FL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

  8. INSPECT REAR SPEAKER ASSEMBLY


    1. A01E048

      for Extra Cab:


      1. Disconnect the S20*1 and/or S19*2 speaker connector.


        • *1: for RH

        • *2: for LH

      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

    2. for Double Cab:


      1. Disconnect the S18*1 and/or S17*2 speaker connector.


        • *1: for RH

        • *2: for LH

      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

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


    1. for Extra Cab:


      1. Disconnect the R2 radio receiver assembly connector.

      2. Disconnect the S20*1 and/or S19*2 speaker connector.


        • *1: for RH

        • *2: for LH

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

        Standard Resistance
        for RH
        Tester Connection Condition Specified Condition
        R2-1 (RR+) - S20-1 Always Below 1 Ω
        R2-3 (RR-) - S20-2
        R2-1 (RR+) - Body ground Always 10 kΩ or higher
        R2-3 (RR-) - Body ground
        for LH
        Tester Connection Condition Specified Condition
        R2-2 (RL+) - S19-1 Always Below 1 Ω
        R2-6 (RL-) - S19-2
        R2-2 (RL+) - Body ground Always 10 kΩ or higher
        R2-6 (RL-) - Body ground

    2. for Double Cab:


      1. Disconnect the R2 radio receiver assembly connector.

      2. Disconnect the S18*1 and/or S17*2 speaker connector.


        • *1: for RH

        • *2: for LH

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

        Standard Resistance
        for RH
        Tester Connection Condition Specified Condition
        R2-1 (RR+) - S18-1 Always Below 1 Ω
        R2-3 (RR-) - S18-2
        R2-1 (RR+) - Body ground Always 10 kΩ or higher
        R2-3 (RR-) - Body ground
        for LH
        Tester Connection Condition Specified Condition
        R2-2 (RL+) - S17-1 Always Below 1 Ω
        R2-6 (RL-) - S17-2
        R2-2 (RL+) - Body ground Always 10 kΩ or higher
        R2-6 (RL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here