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

DESCRIPTION



WIRING DIAGRAM


  1. for 10 Speakers

    B001MDME03
    B001MZ7E08

  2. for 6 Speakers

    B001MJNE05

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      for 6 Speakers A
      for 10 Speakers B

    B

    CHECK SPEAKER (OPERATION CHECK) Click here

    A

  2. CHECK SPEAKER (OPERATION CHECK)


    1. B001LK7

      Enter the "System Check Mode" screen. Refer to Check Speaker in Operation Check Click here.

    2. Perform the operation check above and determine the speaker that is not operating.

      Result
      Not Operating Speaker Proceed to
      Front No. 1 speaker assembly or front No. 2 speaker assembly A
      Rear speaker assembly B

      Tech Tips

      If sound cannot be heard from any speaker, inspect all of them.


    B

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

    A

  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY AND RADIO SETTING CONDENSER)


    1. Disconnect the H162 radio receiver assembly connector.

    2. Disconnect the J1 and K1 front No. 1 speaker assembly connectors.

    3. Disconnect the H46 radio setting condenser connector.

    4. Measure the resistance between the radio receiver assembly and each of the front No. 1 speaker assemblies to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H162-1 (FR+) - J1-1 Always Below 1 Ω
      H162-5 (FR-) - J1-2 Always Below 1 Ω
      H162-2 (FL+) - K1-1 Always Below 1 Ω
      H162-6 (FL-) - K1-2 Always Below 1 Ω

    5. Measure the resistance between the radio receiver assembly and radio setting condenser to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H162-1 (FR+) - H46-3 (RIN) Always Below 1 Ω
      H162-5 (FR-) - H46-6 (ROUT) Always Below 1 Ω
      H162-2 (FL+) - H46-1 (LIN) Always Below 1 Ω
      H162-6 (FL-) - H46-2 (LOUT) Always Below 1 Ω

    6. Measure the resistance between the radio receiver assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H162-1 (FR+) - Body ground Always 10 kΩ or higher
      H162-5 (FR-) - Body ground Always 10 kΩ or higher
      H162-2 (FL+) - Body ground Always 10 kΩ or higher
      H162-6 (FL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (RADIO SETTING CONDENSER - FRONT NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the I3 and I5 front No. 2 speaker assembly connectors.

    2. Disconnect the H46 radio setting condenser connector.

    3. Measure the resistance between the radio setting condenser and each of the front No. 2 speaker assemblies to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H46-8 (RI+) - I3-2 Always Below 1 Ω
      H46-7 (RI-) - I3-1 Always Below 1 Ω
      H46-4 (LI+) - I5-2 Always Below 1 Ω
      H46-5 (LI-) - I5-1 Always Below 1 Ω

    4. Measure the resistance between the radio setting condenser and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H46-8 (RI+) - Body ground Always 10 kΩ or higher
      H46-7 (RI-) - Body ground Always 10 kΩ or higher
      H46-4 (LI+) - Body ground Always 10 kΩ or higher
      H46-5 (LI-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


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

    2. B001LMWE30
      Text in Illustration
      *a

      Component without harness connected

      (Front No. 2 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  6. REPLACE RADIO SETTING CONDENSER


    1. Check that the malfunction disappears when a known good radio setting condenser is installed Click here.

      OK
      Malfunction disappears.

    OK

    END

    NG

  7. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly Click here.

    2. B001LWUE01
      Text in Illustration
      *a

      Component without harness connected

      (Front No. 1 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω

    OK

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

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

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


    1. Disconnect the H163 radio receiver assembly connector.

    2. Disconnect the L4 and M4 rear speaker assembly connectors.

    3. Measure the resistance between the radio receiver assembly and each of the rear speaker assemblies to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H163-1 (RR+) - L4-1 Always Below 1 Ω
      H163-3 (RR-) - L4-2 Always Below 1 Ω
      H163-2 (RL+) - M4-1 Always Below 1 Ω
      H163-6 (RL-) - M4-2 Always Below 1 Ω

    4. Measure the resistance between the radio receiver assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H163-1 (RR+) - Body ground Always 10 kΩ or higher
      H163-3 (RR-) - Body ground Always 10 kΩ or higher
      H163-2 (RL+) - Body ground Always 10 kΩ or higher
      H163-6 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly Click here.

    2. B001LWUE01
      Text in Illustration
      *a

      Component without harness connected

      (Rear Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω

    OK

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

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

  10. CHECK SPEAKER (OPERATION CHECK)


    1. B001LK7

      Enter the "System Check Mode" screen. Refer to Check Speaker in Operation Check Click here.

    2. Perform the operation check above and determine the speaker that is not operating.

      Result
      Not Operating Speaker Proceed to
      Front No. 2 speaker assembly or front No. 3 speaker assembly A
      Front No. 1 speaker assembly B
      Front No. 4 speaker assembly C
      Other speakers D

      Tech Tips

      If sound cannot be heard from any speaker, inspect all of them.


    B

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY) Click here

    C

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 4 SPEAKER ASSEMBLY) Click here

    D

    CHECK SPEAKER (OPERATION CHECK) Click here

    A

  11. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY - FRONT NO. 3 SPEAKER ASSEMBLY)


    1. Disconnect the H157 stereo component amplifier assembly connector.

    2. Disconnect the I3 and I5 front No. 2 speaker assembly connectors.

    3. Disconnect the I4 and I6 front No. 3 speaker assembly connectors.

    4. Measure the resistance between the stereo component amplifier assembly and each of the front No. 2 speaker assemblies to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-5 (MR+) - I3-2 Always Below 1 Ω
      H157-20 (MR-) - I3-1 Always Below 1 Ω
      H157-4 (ML+) - I5-2 Always Below 1 Ω
      H157-19 (ML-) - I5-1 Always Below 1 Ω

    5. Measure the resistance between the stereo component amplifier assembly and each of the front No. 3 speaker assemblies to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-5 (MR+) - I4-2 Always Below 1 Ω
      H157-20 (MR-) - I4-1 Always Below 1 Ω
      H157-4 (ML+) - I6-2 Always Below 1 Ω
      H157-19 (ML-) - I6-1 Always Below 1 Ω

    6. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-5 (MR+) - Body ground Always 10 kΩ or higher
      H157-20 (MR-) - Body ground Always 10 kΩ or higher
      H157-4 (ML+) - Body ground Always 10 kΩ or higher
      H157-19 (ML-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


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

    2. B001LMWE33
      Text in Illustration
      *a

      Component without harness connected

      (Front No. 2 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  13. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. Remove the front No. 3 speaker assembly Click here.

    2. B001LXRE06
      Text in Illustration
      *a

      Component without harness connected

      (Front No. 3 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 10 kΩ or higher

    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  14. REPLACE FRONT NO. 3 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. 3 speaker assemblies that were disconnected.

      • When there is a possibility that either the right or left speaker is defective, inspect by interchanging the right one with the left one.

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


    OK

    END

    NG

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

  15. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 1 SPEAKER ASSEMBLY)


    1. Disconnect the H157 stereo component amplifier assembly connector.

    2. Disconnect the J1 and K1 front No. 1 speaker assembly connectors.

    3. Measure the resistance between the stereo component amplifier assembly and each of the front No. 1 speaker assemblies to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-13 (FR+) - J1-1 Always Below 1 Ω
      H157-28 (FR-) - J1-2 Always Below 1 Ω
      H157-12 (FL+) - K1-1 Always Below 1 Ω
      H157-27 (FL-) - K1-2 Always Below 1 Ω

    4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-13 (FR+) - Body ground Always 10 kΩ or higher
      H157-28 (FR-) - Body ground Always 10 kΩ or higher
      H157-12 (FL+) - Body ground Always 10 kΩ or higher
      H157-27 (FL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. Remove the front No. 1 speaker assembly Click here.

    2. B001KTVE02
      Text in Illustration
      *a

      Component without harness connected

      (Front No. 1 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω

    OK

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

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

  17. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 4 SPEAKER ASSEMBLY)


    1. Disconnect the H157 stereo component amplifier assembly connector.

    2. Disconnect the I2 front No. 4 speaker assembly connector.

    3. Measure the resistance between the stereo component amplifier assembly and front No. 4 speaker assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-7 (CTR+) - I2-2 Always Below 1 Ω
      H157-22 (CTR-) - I2-1 Always Below 1 Ω

    4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-7 (CTR+) - Body ground Always 10 kΩ or higher
      H157-22 (CTR-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  18. INSPECT FRONT NO. 4 SPEAKER ASSEMBLY


    1. Remove the front No. 4 speaker assembly Click here.

    2. B001LMWE33
      Text in Illustration
      *a

      Component without harness connected

      (Front No. 4 Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω

    OK

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

    NG

    REPLACE FRONT NO. 4 SPEAKER ASSEMBLY Click here

  19. CHECK SPEAKER (OPERATION CHECK)


    1. B001LK7

      Enter the "System Check Mode" screen. Refer to Check Speaker in Operation Check Click here.

    2. Perform the operation check above and determine the speaker that is not operating.

      Result
      Not Operating Speaker Proceed to
      No. 1 speaker assembly with box A
      Rear speaker assembly B

      Tech Tips

      If sound cannot be heard from any speaker, inspect all of them.


    B

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR SPEAKER ASSEMBLY) Click here

    A

  20. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - NO. 1 SPEAKER ASSEMBLY WITH BOX)


    1. Disconnect the H157 stereo component amplifier assembly connector.

    2. Disconnect the P15 No. 1 speaker assembly with box connector.

    3. Measure the resistance between the stereo component amplifier assembly and No. 1 speaker assembly with box to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-6 (WF1+) - P15-2 (WF1+) Always Below 1 Ω
      H157-21 (WF1-) - P15-4 (WF2+) Always Below 1 Ω

    4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-6 (WF1+) - Body ground Always 10 kΩ or higher
      H157-21 (WF1-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  21. INSPECT NO. 1 SPEAKER ASSEMBLY WITH BOX


    1. Remove the No. 1 speaker assembly with box Click here.

    2. B001MTLE19
      Text in Illustration
      *a

      Component without harness connected

      (No. 1 Speaker Assembly with Box)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (WF1+) - 4 (WF2+) Always 1.6 to 2.4 Ω

    OK

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

    NG

    REPLACE NO. 1 SPEAKER ASSEMBLY WITH BOX Click here

  22. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR SPEAKER ASSEMBLY)


    1. Disconnect the H157 stereo component amplifier assembly connector.

    2. Disconnect the L4 and M4 rear speaker assembly connectors.

    3. Measure the resistance between the stereo component amplifier assembly and each of the rear speaker assemblies to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-15 (RR+) - L4-1 Always Below 1 Ω
      H157-30 (RR-) - L4-2 Always Below 1 Ω
      H157-14 (RL+) - M4-1 Always Below 1 Ω
      H157-29 (RL-) - M4-2 Always Below 1 Ω

    4. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-15 (RR+) - Body ground Always 10 kΩ or higher
      H157-30 (RR-) - Body ground Always 10 kΩ or higher
      H157-14 (RL+) - Body ground Always 10 kΩ or higher
      H157-29 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  23. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly Click here.

    2. B001KTVE02
      Text in Illustration
      *a

      Component without harness connected

      (Rear Speaker Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 3.2 to 4.8 Ω

    OK

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

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here