AUDIO AND VISUAL SYSTEM Speaker Circuit

DESCRIPTION

When the radio receiver has a built-in type amplifier, a sound signal is sent from the radio receiver to the speakers via this circuit.

WIRING DIAGRAM

A0119T5E01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK SPEAKERS


    1. Check if sound is emitted from each speaker.

      Result
      Result Proceed to
      Front No. 1 speakers or front No. 2 speakers have problems A
      Rear speakers have problems B

    B

    INSPECT REAR SPEAKER ASSEMBLY Click here

    A

  2. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. A011AUDE01
      Text in Illustration
      *1

      Component without harness connected

      (Front No. 2 Speaker Assembly)
      *2 for RH Side
      *3 for LH Side

      Disconnect the E7 or F7 front No. 2 speaker assembly connector.

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

      Standard Resistance:
      for RH Side
      Tester Connection Condition Specified Condition
      E7-1 (TWR-) - E7-3 (TWR+) Always Approximately 4 Ω
      E7-3 (TWR+) - E7-4 (+) Always Below 1 Ω
      E7-1 (TWR-) - E7-2 (-)
      for LH Side
      Tester Connection Condition Specified Condition
      F7-1 (TWL-) - F7-3 (TWL+) Always Approximately 4 Ω
      F7-3 (TWL+) - F7-4 (+) Always Below 1 Ω
      F7-1 (TWL-) - F7-2 (-)

    3. Reconnect the front No. 2 speaker assembly connector.


    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

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


    1. A01182TE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (Radio Receiver Assembly)
      *2

      Front view of wire harness connector

      (to Front No. 2 Speaker Assembly)
      *3 for RH Side
      *4 for LH Side

      Disconnect the D61 radio receiver assembly connector.

    2. Disconnect the E7 or F7 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
      D61-1 (FR+) - E7-3 (TWR+) Always Below 1 Ω
      D61-5 (FR-) - E7-1 (TWR-) Always Below 1 Ω
      D61-1 (FR+) - Body ground Always 10 kΩ or higher
      D61-5 (FR-) - Body ground Always 10 kΩ or higher
      for LH Side
      Tester Connection Condition Specified Condition
      D61-2 (FL+) - F7-3 (TWL+) Always Below 1 Ω
      D61-6 (FL-) - F7-1 (TWL-) Always Below 1 Ω
      D61-2 (FL+) - Body ground Always 10 kΩ or higher
      D61-6 (FL-) - Body ground Always 10 kΩ or higher

    4. Reconnect the radio receiver assembly connector.

    5. Reconnect the front No. 2 speaker assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. A01174QE01
      Text in Illustration
      *1

      Component without harness connected

      (Front No. 1 Speaker Assembly)
      *2 for RH Side
      *3 for LH Side

      Disconnect the E6 or F6 front No. 1 speaker assembly connector.

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

      Standard Resistance:
      for RH Side
      Tester Connection Condition Specified Condition
      E6-1 - E6-2 Always Approximately 4 Ω
      for LH Side
      Tester Connection Condition Specified Condition
      F6-1 - F6-2 Always Approximately 4 Ω

    3. Reconnect the front No. 1 speaker assembly connector.


    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

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


    1. A0116Z4E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front No. 1 Speaker Assembly)
      *2

      Front view of wire harness connector

      (to Front No. 2 Speaker Assembly)
      *3 for RH Side
      *4 for LH Side

      Disconnect the E6 or F6 front No. 1 speaker assembly connector.

    2. Disconnect the E7 or F7 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
      E6-1 - E7-4 (+) Always Below 1 Ω
      E6-2 - E7-2 (-)
      E6-1 - Body ground Always 10 kΩ or higher
      E6-2 - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      F6-1 - F7-4 (+) Always Below 1 Ω
      F6-2 - F7-2 (-)
      F6-1 - Body ground Always 10 kΩ or higher
      F6-2 - Body ground

    4. Reconnect the front No. 1 speaker assembly connector.

    5. Reconnect the front No. 2 speaker assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  6. INSPECT REAR SPEAKER ASSEMBLY


    1. A01174QE02
      Text in Illustration
      *1

      Component without harness connected

      (Rear Speaker Assembly)
      *2 for RH Side
      *3 for LH Side

      Disconnect the G28 or G29 rear speaker assembly connector.

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

      Standard Resistance:
      for RH Side
      Tester Connection Condition Specified Condition
      G28-1 - G28-2 Always Approximately 4 Ω
      for LH Side
      Tester Connection Condition Specified Condition
      G29-1 - G29-2 Always Approximately 4 Ω

    3. Reconnect the rear speaker assembly connector.


    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

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


    1. A0117YPE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Radio Receiver Assembly)
      *2

      Front view of wire harness connector

      (to Rear Speaker Assembly)
      *3 for RH Side
      *4 for LH Side

      Disconnect the D62 radio receiver assembly connector.

    2. Disconnect the G28 or G29 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
      D62-1 (RR+) - G28-1 Always Below 1 Ω
      D62-3 (RR-) - G28-2
      D62-1 (RR+) - Body ground Always 10 kΩ or higher
      D62-3 (RR-) - Body ground
      for LH Side
      Tester Connection Condition Specified Condition
      D62-2 (RL+) - G29-1 Always Below 1 Ω
      D62-6 (RL-) - G29-2
      D62-2 (RL+) - Body ground Always 10 kΩ or higher
      D62-6 (RL-) - Body ground

    4. Reconnect the radio receiver assembly connector.

    5. Reconnect the rear speaker assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here