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

DESCRIPTION

If there is a short in a speaker circuit, the radio 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 receiver assembly, telematics transceiver* or speakers.


WIRING DIAGRAM


  1. for 4 Speakers

    A001V73E03
    A001V3ME03

  2. for 6 Speakers

    A001U8QE04

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      for 4 Speakers (w/ Manual (SOS) Switch) A
      for 4 Speakers (w/o Manual (SOS) Switch) B
      for 6 Speakers C

    B

    CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY- SPEAKERS) Click here

    C

    CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - SPEAKERS) Click here

    A

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


    1. Disconnect the F48 radio receiver assembly connector.

    2. Disconnect the F51 telematics transceiver connector.

    3. Disconnect the F85 and F86 front No. 2 speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F48-1 (FR+) - F51-2 (SPI+) Always Below 1 Ω
      F48-5 (FR-) - F51-3 (SPI-) Always Below 1 Ω
      F51-5 (SPO+) - F85-4 (TWR+) Always Below 1 Ω
      F51-6 (SPO-) - F85-2 (TWR-) Always Below 1 Ω
      F48-2 (FL+) - F86-4 (TWL-) Always Below 1 Ω
      F48-6 (FL-) - F86-2 (TWL-) Always Below 1 Ω
      F48-1 (FR+) or F51-2 (SPI+) - Body ground Always 10 kΩ or higher
      F48-5 (FR-) or F51-3 (SPI-) - Body ground Always 10 kΩ or higher
      F51-5 (SPO+) or F85-4 (TWR+) - Body ground Always 10 kΩ or higher
      F51-6 (SPO-) or F85-2 (TWR-) - Body ground Always 10 kΩ or higher
      F48-2 (FL+) or F86-4 (TWL+) - Body ground Always 10 kΩ or higher
      F48-6 (FL-) or F86-2 (TWL-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the I1 and J1 front No. 1 speaker assembly connectors.

    2. Disconnect the F85 and F86 front No. 2 speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I1-1 - F85-3 (+) Always Below 1 Ω
      I1-2 - F85-1 (-) Always Below 1 Ω
      J1-1 - F86-3 (+) Always Below 1 Ω
      J1-2 - F86-1 (-) Always Below 1 Ω
      I1-1 or F85-3 (+) - Body ground Always 10 kΩ or higher
      I1-2 or F85-1 (-) - Body ground Always 10 kΩ or higher
      J1-1 or F86-3 (+) - Body ground Always 10 kΩ or higher
      J1-2 or F86-1 (-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT TELEMATICS TRANSCEIVER


    1. Remove the telematics transceiver.

      Click here

    2. A001SA6C34
      *a

      Component without harness connected

      (Telematics Transceiver)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (SPI+) - 5 (SPO+) Always Below 1 Ω
      3 (SPI-) - 6 (SPO-) Always Below 1 Ω
      2 (SPI+) - 3 (SPI-) Always 10 kΩ or higher
      5 (SPO+) - 6 (SPO-) Always 10 kΩ or higher
      2 (SPI+) or 5 (SPO+) - Body ground Always 10 kΩ or higher
      3 (SPI-) or 6 (SPO-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

  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

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  6. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

      Click here

    2. Inspect the front No. 2 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  7. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Check that the malfunction disappears when a known good speaker is installed.

      Click here

      OK
      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 No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.

      • Perform the above inspection on both LH and RH sides.

      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

    NG

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

  8. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY- SPEAKERS)


    1. Disconnect the F48 radio receiver assembly connector.

    2. Disconnect the I1 and J1 front No. 1 speaker assembly connectors.

    3. Disconnect the F85 and F86 front No. 2 speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F48-1 (FR+) - F85-4 (TWR+) Always Below 1 Ω
      F48-5 (FR-) - F85-2 (TWR-) Always Below 1 Ω
      F85-3 (+) - I1-1 Always Below 1 Ω
      F85-1 (-) - I1-2 Always Below 1 Ω
      F48-2 (FL+) - F86-4 (TWL+) Always Below 1 Ω
      F48-6 (FL-) - F86-2 (TWL-) Always Below 1 Ω
      F86-3 (+) - J1-1 Always Below 1 Ω
      F86-1 (-) - J1-2 Always Below 1 Ω
      F48-1 (FR+) or F85-4 (TWR+) - Body ground Always 10 kΩ or higher
      F48-5 (FR-) or F85-2 (TWR-) - Body ground Always 10 kΩ or higher
      F85-3 (+) or I1-1 - Body ground Always 10 kΩ or higher
      F85-1 (-) or I1-2 - Body ground Always 10 kΩ or higher
      F48-2 (FL+) or F86-4 (TWL+) - Body ground Always 10 kΩ or higher
      F48-6 (FL-) or F86-2 (TWL-) - Body ground Always 10 kΩ or higher
      F86-3 (+) or J1-1 - Body ground Always 10 kΩ or higher
      F86-1 (-) or J1-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. 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

  10. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

      Click here

    2. Inspect the front No. 2 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  11. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Check that the malfunction disappears when a known good speaker is installed.

      Click here

      OK
      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 No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.

      • Perform the above inspection on both LH and RH sides.

      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

    NG

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

  12. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - SPEAKERS)


    1. Disconnect the F48 and F49 radio receiver assembly connectors.

    2. Disconnect the I1 and J1 front No. 1 speaker assembly connectors.

    3. Disconnect the F85 and F86 front No. 2 speaker assembly connectors.

    4. Disconnect the K4 and L4 rear speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F48-1 (FR+) - F85-4 (TWR+) Always Below 1 Ω
      F48-5 (FR-) - F85-2 (TWR-) Always Below 1 Ω
      F85-3 (+) - I1-1 Always Below 1 Ω
      F85-1 (-) - I1-2 Always Below 1 Ω
      F48-2 (FL+) - F86-4 (TWL+) Always Below 1 Ω
      F48-6 (FL-) - F86-2 (TWL-) Always Below 1 Ω
      F86-3 (+) - J1-1 Always Below 1 Ω
      F86-1 (-) - J1-2 Always Below 1 Ω
      F49-1 (RR+) - K4-1 Always Below 1 Ω
      F49-3 (RR-) - K4-2 Always Below 1 Ω
      F49-2 (RL+) - L4-1 Always Below 1 Ω
      F49-6 (RL-) - L4-2 Always Below 1 Ω
      F48-1 (FR+) or F85-4 (TWR+) - Body ground Always 10 kΩ or higher
      F48-5 (FR-) or F85-2 (TWR-) - Body ground Always 10 kΩ or higher
      F85-3 (+) or I1-1 - Body ground Always 10 kΩ or higher
      F85-1 (-) or I1-2 - Body ground Always 10 kΩ or higher
      F48-2 (FL+) or F86-4 (TWL+) - Body ground Always 10 kΩ or higher
      F48-6 (FL-) or F86-2 (TWL-) - Body ground Always 10 kΩ or higher
      F86-3 (+) or J1-1 - Body ground Always 10 kΩ or higher
      F86-1 (-) or J1-2 - Body ground Always 10 kΩ or higher
      F49-1 (RR+) or K4-1 - Body ground Always 10 kΩ or higher
      F49-3 (RR-) or K4-2 - Body ground Always 10 kΩ or higher
      F49-2 (RL+) or L4-1 - Body ground Always 10 kΩ or higher
      F49-6 (RL-) or L4-2 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. 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

  14. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. Remove the front No. 2 speaker assembly.

      Click here

    2. Inspect the front No. 2 speaker assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  15. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


    1. Check that the malfunction disappears when a known good speaker is installed.

      Click here

      OK
      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 No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.

      • Perform the above inspection on both LH and RH sides.

      Result
      Proceed to
      OK
      NG

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

    NG

  16. 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

    OK

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

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here