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

DESCRIPTION

The sound signals amplified by the radio and display receiver assembly are sent to the speakers from the radio and display receiver assembly via the speaker circuit.

If there is a short in a speaker circuit, the radio and display receiver assembly detects it and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the radio and display receiver assembly, telematics transceiver* or speakers.


WIRING DIAGRAM


  1. A01V7N6E04

CAUTION / NOTICE / HINT

Note

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.

Click here

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      w/o Telematics Transceiver A
      w/ Telematics Transceiver B

    B

    CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for LH Side

    • *2: for RH Side


    1. Disconnect the G141 and G142 radio and display receiver assembly connectors.

    2. Disconnect the J1*1 and/or I1*2 front No. 1 speaker assembly connector.

    3. Disconnect the H1*1 and/or H3*2 front No. 2 speaker assembly connector.

    4. Disconnect the L2*1 and/or K2*2 rear speaker assembly connector.

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

      Standard Resistance
      for LH Side:
      Tester Connection Condition Specified Condition
      G141-2 (FL+) - H1-4 (TWL+) Always Below 1 Ω
      G141-6 (FL-) - H1-2 (TWL-) Always Below 1 Ω
      H1-3 (+) - J1-1 Always Below 1 Ω
      H1-1 (-) - J1-2 Always Below 1 Ω
      G142-2 (RL+) - L2-1 Always Below 1 Ω
      G142-6 (RL-) - L2-2 Always Below 1 Ω
      G141-2 (FL+) - Body ground Always 10 kΩ or higher
      G141-6 (FL-) - Body ground Always 10 kΩ or higher
      G142-2 (RL+) - Body ground Always 10 kΩ or higher
      G142-6 (RL-) - Body ground Always 10 kΩ or higher
      H1-3 (+) - Body ground Always 10 kΩ or higher
      H1-1 (-) - Body ground Always 10 kΩ or higher
      for RH Side:
      Tester Connection Condition Specified Condition
      G141-1 (FR+) - H3-4 (TWR+) Always Below 1 Ω
      G141-5 (FR-) - H3-2 (TWR-) Always Below 1 Ω
      H3-3 (+) - I1-1 Always Below 1 Ω
      H3-1 (-) - I1-2 Always Below 1 Ω
      G142-1 (RR+) - K2-1 Always Below 1 Ω
      G142-3 (RR-) - K2-2 Always Below 1 Ω
      G141-1 (FR+) - Body ground Always 10 kΩ or higher
      G141-5 (FR-) - Body ground Always 10 kΩ or higher
      G142-1 (RR+) - Body ground Always 10 kΩ or higher
      G142-3 (RR-) - Body ground Always 10 kΩ or higher
      H3-3 (+) - Body ground Always 10 kΩ or higher
      H3-1 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  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

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  4. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly.

      Click here

    2. Inspect the rear speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

  5. CHECK FRONT NO.2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker assembly with a known good one.

      Click here

    2. Check 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.
      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

  6. CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)


    • *1: for LH Side

    • *2: for RH Side


    1. Disconnect the G141 and G142 radio and display receiver assembly connectors.

    2. Disconnect the J1*1 and/or I1*2 front No. 1 speaker assembly connector.

    3. Disconnect the H1*1 and/or H3*2 front No. 2 speaker assembly connector.

    4. Disconnect the L2*1 and/or K2*2 rear speaker assembly connector.

    5. Disconnect the M38 telematics transceiver connector.

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

      Standard Resistance
      for LH Side:
      Tester Connection Condition Specified Condition
      G141-2 (FL+) - H1-4 (TWL+) Always Below 1 Ω
      G141-6 (FL-) - H1-2 (TWL-) Always Below 1 Ω
      H1-3 (+) - J1-1 Always Below 1 Ω
      H1-1 (-) - J1-2 Always Below 1 Ω
      G142-2 (RL+) - L2-1 Always Below 1 Ω
      G142-6 (RL-) - L2-2 Always Below 1 Ω
      G141-2 (FL+) - Body ground Always 10 kΩ or higher
      G141-6 (FL-) - Body ground Always 10 kΩ or higher
      G142-2 (RL+) - Body ground Always 10 kΩ or higher
      G142-6 (RL-) - Body ground Always 10 kΩ or higher
      H1-3 (+) - Body ground Always 10 kΩ or higher
      H1-1 (-) - Body ground Always 10 kΩ or higher
      for RH Side:
      Tester Connection Condition Specified Condition
      G141-1 (FR+) - H3-4 (TWR+) Always Below 1 Ω
      G141-5 (FR-) - H3-2 (TWR-) Always Below 1 Ω
      H3-3 (+) - M38-2 (SPI+) Always Below 1 Ω
      H3-1 (-) - M38-3 (SPI-) Always Below 1 Ω
      M38-5 (SPO+) - I1-1 Always Below 1 Ω
      M38-6 (SPO-) - I1-2 Always Below 1 Ω
      G142-1 (RR+) - K2-1 Always Below 1 Ω
      G142-3 (RR-) - K2-2 Always Below 1 Ω
      G141-1 (FR+) - Body ground Always 10 kΩ or higher
      G141-5 (FR-) - Body ground Always 10 kΩ or higher
      H3-3 (+) - Body ground Always 10 kΩ or higher
      H3-1 (-) - Body ground Always 10 kΩ or higher
      M38-5 (SPO+) - Body ground Always 10 kΩ or higher
      M38-6 (SPO-) - Body ground Always 10 kΩ or higher
      G142-1 (RR+) - Body ground Always 10 kΩ or higher
      G142-3 (RR-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. 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

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  8. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly connector.

      Click here

    2. Inspect the rear speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

  9. CHECK FRONT NO. 2 SPEAKER ASSEMBLY


    1. Replace the front No. 2 speaker assembly with a known good one.

      Click here

    2. Check 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.
      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)

    NG

  10. CHECK TELEMATICS TRANSCEIVER


    1. Replace the telematics transceiver with a new one.

      Click here

    2. Check the malfunction disappears.

      OK
      Malfunction disappears.
      Result
      Proceed to
      OK
      NG

    OK

    END (TELEMATICS TRANSCEIVER IS DEFECTIVE)

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here