NAVIGATION SYSTEM Speaker Circuit

DESCRIPTION


WIRING DIAGRAM

A005AD7E03
A005CW1E03

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. Disconnect the L30 stereo component amplifier assembly connector.

    2. Disconnect the N1 and O1 front No. 1 speaker assembly connectors.

    3. Disconnect the I4 and I5 front No. 2 speaker assembly connectors (for LHD).

    4. Disconnect the I6 and I7 front No. 2 speaker assembly connectors (for RHD).

    5. Disconnect the P3 and Q3 rear speaker assembly connectors.

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

    7. Measure the resistance between each of the front No. 1 speaker assemblies and the stereo component amplifier assembly 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

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      L30-9 (FR+) - I4-1 Always Below 1 Ω
      L30-24 (FR-) - I4-2 Always Below 1 Ω
      L30-14 (FL+) - I5-1 Always Below 1 Ω
      L30-29 (FL-) - I5-2 Always Below 1 Ω
      for RHD
      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

    9. Measure the resistance between each of the rear speaker assemblies and the stereo component amplifier assembly 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

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

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

    11. 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
      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
      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
      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

  2. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. A005DWZE02
      Text in Illustration
      *A for RH
      *B for LH
      *a

      Component without harness connected

      (Front No. 1 Speaker Assembly)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        N1-1 - N1-2 Always 4.6 to 6.6 Ω
        O1-1 - O1-2 Always 4.6 to 6.6 Ω

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  3. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. A005B2VE02
      Text in Illustration
      *A for RH (for LHD)
      *B for RH (for RHD)
      *C for LH (for LHD)
      *D for LH (for RHD)
      *a

      Component without harness connected

      (Front No. 2 Speaker Assembly)

      Resistance check


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

        Standard Resistance
        for LHD
        Tester Connection Condition Specified Condition
        I4-1 - I4-2 Always 10 kΩ or higher
        I5-1 - I5-2 Always 10 kΩ or higher
        for RHD
        Tester Connection Condition Specified Condition
        I6-1 - I6-2 Always 10 kΩ or higher
        I7-1 - I7-2 Always 10 kΩ or higher

    NG

    REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Click here

    OK

  4. 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 speaker is defective, inspect by interchanging the right one with the left one.

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


    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

    NG

  5. INSPECT REAR SPEAKER ASSEMBLY


    1. A005BVGE02
      Text in Illustration
      *A for RH
      *B for LH
      *a

      Component without harness connected

      (Rear Speaker Assembly)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        P3-1 - P3-2 Always 3.2 to 5.2 Ω
        Q3-1 - Q3-2 Always 3.2 to 5.2 Ω

    NG

    REPLACE REAR SPEAKER ASSEMBLY Click here

    OK

  6. INSPECT REAR NO. 2 SPEAKER ASSEMBLY


    1. A005AUGE02
      Text in Illustration
      *A for RH
      *B for LH
      *a

      Component without harness connected

      (Rear No. 2 Speaker Assembly)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        P5-1 - P5-2 Always 10 kΩ or higher
        Q5-1 - Q5-2 Always 10 kΩ or higher

    NG

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here

    OK

  7. REPLACE REAR 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 rear 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

    END (REAR NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

    NG

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