NAVIGATION SYSTEM(for Navigation Receiver Type) Speaker Circuit

DESCRIPTION


WIRING DIAGRAM

A005EFJE02
A005CDFE02

PROCEDURE


  1. CHECK SPEAKER (OPERATION CHECK)


    1. A005EWC

      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 A
      Front No. 2 speaker assembly B
      Rear speaker assembly C
      Rear No. 2 speaker assembly 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. 2 SPEAKER ASSEMBLY) Click here

    C

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

    D

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY) Click here

    A

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


    1. Disconnect the L30 stereo component amplifier assembly connector.

    2. Disconnect the N1 and O1 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
      L30-15 (WFR+) - N1-1 Always Below 1 Ω
      L30-30 (WFR-) - N1-2 Always Below 1 Ω
      L30-8 (WFL+) - O1-1 Always Below 1 Ω
      L30-23 (WFL-) - O1-2 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
      L30-15 (WFR+) - Body ground Always 10 kΩ or higher
      L30-30 (WFR-) - Body ground Always 10 kΩ or higher
      L30-8 (WFL+) - Body ground Always 10 kΩ or higher
      L30-23 (WFL-) - Body ground Always 10 kΩ or higher

    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. A005A4TE05
      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 4.6 to 6.6 Ω

    OK

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

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

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


    1. Disconnect the L30 stereo component amplifier assembly connector.

    2. Disconnect the I6 and I7 front No. 2 speaker assembly connectors.

    3. 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
      L30-9 (FR+) - I6-1 Always Below 1 Ω
      L30-24 (FR-) - I6-2 Always Below 1 Ω
      L30-14 (FL+) - I7-1 Always Below 1 Ω
      L30-29 (FL-) - I7-2 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
      L30-9 (FR+) - Body ground Always 10 kΩ or higher
      L30-24 (FR-) - Body ground Always 10 kΩ or higher
      L30-14 (FL+) - Body ground Always 10 kΩ or higher
      L30-29 (FL-) - 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. A005CA5E17
      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

    OK

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

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

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


    1. Disconnect the L30 stereo component amplifier assembly connector.

    2. Disconnect the P3 and Q3 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
      L30-12 (RR+) - P3-1 Always Below 1 Ω
      L30-27 (RR-) - P3-2 Always Below 1 Ω
      L30-11 (RL+) - Q3-1 Always Below 1 Ω
      L30-26 (RL-) - Q3-2 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
      L30-12 (RR+) - Body ground Always 10 kΩ or higher
      L30-27 (RR-) - Body ground Always 10 kΩ or higher
      L30-11 (RL+) - Body ground Always 10 kΩ or higher
      L30-26 (RL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT REAR SPEAKER ASSEMBLY


    1. Remove the rear speaker assembly Click here.

    2. A005A4TE02
      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 5.2 Ω

    OK

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

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

  8. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - REAR NO. 2 SPEAKER ASSEMBLY)


    1. Disconnect the L30 stereo component amplifier assembly connector.

    2. Disconnect the P5 and Q5 rear No. 2 speaker assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L30-13 (TWR+) - P5-2 Always Below 1 Ω
      L30-28 (TWR-) - P5-1 Always Below 1 Ω
      L30-10 (TWL+) - Q5-2 Always Below 1 Ω
      L30-25 (TWL-) - Q5-1 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
      L30-13 (TWR+) - Body ground Always 10 kΩ or higher
      L30-28 (TWR-) - Body ground Always 10 kΩ or higher
      L30-10 (TWL+) - Body ground Always 10 kΩ or higher
      L30-25 (TWL-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT REAR NO. 2 SPEAKER ASSEMBLY


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

    2. A005BUEE92
      Text in Illustration
      *a

      Component without harness connected

      (Rear 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

    OK

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

    NG

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here