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

A01J3IDE52

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK SPEAKER (OPERATION CHECK)


    1. A01J7LP

      Enter the "System Check Mode" screen. [Refer to Check SP Check On in Operation Check Click here]

    2. Check the malfunctioning speakers.

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

    B

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR SPEAKER ASSEMBLY) Click here

    A

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


    • *1: for RH Side

    • *2: for LH Side


    1. Disconnect the R25 radio and display receiver assembly connector.

    2. Disconnect the T25*1 and/or T24*2 front No. 2 speaker connector.

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

      Standard Resistance
      for RH Side
      Tester Connection Condition Specified Condition
      R25-1 (FR+) - T25-4 Always Below 1 Ω
      R25-5 (FR-) - T25-2
      R25-1 (FR+) - Body ground Always 10 kΩ or higher
      R25-5 (FR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      R25-2 (FL+) - T24-4 Always Below 1 Ω
      R25-6 (FL-) - T24-2
      R25-2 (FL+) - Body ground Always 10 kΩ or higher
      R25-6 (FL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. 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 S16*1 and/or S15*2 front No. 1 speaker assembly connector.

    2. Disconnect the T25*1 and/or T24*2 front 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
      T25-3 - S16-1 Always Below 1 Ω
      T25-1 - S16-2
      T25-3 - Body ground Always 10 kΩ or higher
      T25-1 - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      T24-3 - S15-1 Always Below 1 Ω
      T24-1 - S15-2
      T24-3 - Body ground Always 10 kΩ or higher
      T24-1 - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Disconnect the S16*1 and/or S15*2 front No. 1 speaker assembly connector.


      • *1: for RH Side

      • *2: for LH Side

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


    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  5. CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker 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.

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

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


    • *1: for RH Side

    • *2: for LH Side


    1. Disconnect the R26 radio and display receiver assembly connector.

    2. Disconnect the S18*1 and/or S17*2 rear 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
      R26-1 (RR+) - S18-1 Always Below 1 Ω
      R26-3 (RR-) - S18-2
      R26-1 (RR+) - Body ground Always 10 kΩ or higher
      R26-3 (RR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      R26-2 (RL+) - S17-1 Always Below 1 Ω
      R26-6 (RL-) - S17-2
      R26-2 (RL+) - Body ground Always 10 kΩ or higher
      R26-6 (RL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT REAR SPEAKER ASSEMBLY


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


      • *1: for RH Side

      • *2: for LH Side

    2. Inspect the rear speaker assembly Click here.


    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here