NAVIGATION SYSTEM Speaker Circuit

DESCRIPTION

If there is a short in a speaker circuit, the stereo component amplifier assembly detects the short and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly or speakers.

WIRING DIAGRAM

A019N0BE04
A019N9AE02

INSPECTION PROCEDURE

Note

When replacing the multi-media module receiver assembly or telematics transceiver, perform vehicle contract setting (w/ Telematics Transceiver) Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. Disconnect the O42 stereo component amplifier assembly connector.

    2. Disconnect the G25 telematics transceiver connector (w/ Telematics Transceiver).

    3. Disconnect the I6 and J6 front No. 3 speaker assembly connectors.

    4. Disconnect the I5 and J4 front No. 2 speaker assembly connectors.

    5. Disconnect the I3 and J2 front No. 1 speaker assembly connectors.

    6. Disconnect the K4 and L4 rear No. 1 speaker assembly connectors.

    7. Disconnect the K1 and L1 rear No. 2 speaker assembly connectors.

    8. Disconnect the O24 and P30 quarter side speaker assembly connectors (for 15 Speakers).

    9. Disconnect the H2 front No. 4 speaker assembly connector.

    10. Disconnect the P22 rear No. 3 speaker assembly connector.

    11. Measure the resistance between the stereo component amplifier assembly and the telematics transceiver to check for an open circuit in the wire harness (w/ Telematics Transceiver).

      Standard Resistance
      Tester Connection Condition Specified Condition
      O42-13 (FR+) - G25-2 (SPI+) Always Below 1 Ω
      O42-28 (FR-) - G25-3 (SPI-) Always Below 1 Ω

    12. Measure the resistance between the front No. 2 speaker assembly RH and the telematics transceiver to check for an open circuit in the wire harness (w/ Telematics Transceiver).

      Standard Resistance
      Tester Connection Condition Specified Condition
      G25-5 (SPO+) - I5-1 (TWR+) Always Below 1 Ω
      G25-6 (SPO-) - I5-2 (TWR-) Always Below 1 Ω

    13. Measure the resistance between the front No. 2 speaker assembly RH and the stereo component amplifier assembly to check for an open circuit in the wire harness (w/o Telematics Transceiver).

      Standard Resistance
      Tester Connection Condition Specified Condition
      O42-13 (FR+) - I5-1 (TWR+) Always Below 1 Ω
      O42-28 (FR-) - I5-2 (TWR-) Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O42-12 (FL+) - J4-1 (TWL+) Always Below 1 Ω
      O42-27 (FL-) - J4-2 (TWL-) Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I5-3 (+) - I6-2 Always Below 1 Ω
      I5-4 (-) - I6-1 Always Below 1 Ω
      J4-3 (+) - J6-2 Always Below 1 Ω
      J4-4 (-) - J6-1 Always Below 1 Ω

    16. 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
      O42-5 (WFR+) - I3-1 Always Below 1 Ω
      O42-20 (WFR-) - I3-2 Always Below 1 Ω
      O42-4 (WFL+) - J2-1 Always Below 1 Ω
      O42-19 (WFL-) - J2-2 Always Below 1 Ω

    17. 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
      O42-15 (RR+) - K1-1 (+TW) Always Below 1 Ω
      O42-30 (RR-) - K1-2 (-TW) Always Below 1 Ω
      O42-14 (RL+) - L1-1 (+TW) Always Below 1 Ω
      O42-29 (RL-) - L1-2 (-TW) Always Below 1 Ω

    18. Measure the resistance between each of the rear No. 1 speaker assemblies and the rear No. 2 speaker assemblies to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K4-1 - K1-3 (+) Always Below 1 Ω
      K4-2 - K1-4 (-) Always Below 1 Ω
      L4-1 - L1-3 (+) Always Below 1 Ω
      L4-2 - L1-4 (-) Always Below 1 Ω

    19. Measure the resistance between each of the quarter side speaker assemblies and the stereo component amplifier assembly to check for an open circuit in the wire harness (for 15 Speakers).

      Standard Resistance
      Tester Connection Condition Specified Condition
      O42-11 (SR+) - O24-2 Always Below 1 Ω
      O42-26 (SR-) - O24-1 Always Below 1 Ω
      O42-10 (SL+) - P30-2 Always Below 1 Ω
      O42-25 (SL-) - P30-1 Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O42-7 (CTR+) - H2-2 (+) Always Below 1 Ω
      O42-22 (CTR-) - H2-1 (-) Always Below 1 Ω

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

      Standard Resistance
      for 12 Speakers
      Tester Connection Condition Specified Condition
      O42-6 (WF1+) - P22-3 (+) Always Below 1 Ω
      O42-21 (WF1-) - P22-4 (-) Always Below 1 Ω
      for 15 Speakers
      Tester Connection Condition Specified Condition
      O42-8 (WF+) - P22-2 (WF2+) Always Below 1 Ω
      O42-9 (WF+) - P22-1 (WF1+) Always Below 1 Ω

    22. 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
      O42-13 (FR+) - Body ground Always 10 kΩ or higher
      O42-28 (FR-) - Body ground Always 10 kΩ or higher
      O42-12 (FL+) - Body ground Always 10 kΩ or higher
      O42-27 (FL-) - Body ground Always 10 kΩ or higher
      O42-5 (WFR+) - Body ground Always 10 kΩ or higher
      O42-20 (WFR-) - Body ground Always 10 kΩ or higher
      O42-4 (WFL+) - Body ground Always 10 kΩ or higher
      O42-19 (WFL-) - Body ground Always 10 kΩ or higher
      O42-15 (RR+) - Body ground Always 10 kΩ or higher
      O42-30 (RR-) - Body ground Always 10 kΩ or higher
      O42-14 (RL+) - Body ground Always 10 kΩ or higher
      O42-29 (RL-) - Body ground Always 10 kΩ or higher
      O42-11 (SR+) - Body ground*1 Always 10 kΩ or higher
      O42-26 (SR-) - Body ground*1 Always 10 kΩ or higher
      O42-10 (SL+) - Body ground*1 Always 10 kΩ or higher
      O42-25 (SL-) - Body ground*1 Always 10 kΩ or higher
      O42-7 (CTR+) - Body ground Always 10 kΩ or higher
      O42-22 (CTR-) - Body ground Always 10 kΩ or higher
      O42-8 (WF+) - Body ground*1 Always 10 kΩ or higher
      O42-9 (WF+) - Body ground*1 Always 10 kΩ or higher
      O42-6 (WF1+) - Body ground*2 Always 10 kΩ or higher
      O42-21 (WF1-) - Body ground*2 Always 10 kΩ or higher

      • *1: for 15 Speakers

      • *2: for 12 Speakers

    23. Measure the resistance between the telematics transceiver and body ground to check for a short circuit in the wire harness (w/ Telematics Transceiver).

      Standard Resistance
      Tester Connection Condition Specified Condition
      G25-5 (SPO+) - Body ground Always 10 kΩ or higher
      G25-6 (SPO-) - Body ground Always 10 kΩ or higher

    24. Measure the resistance between each of the front No. 2 speaker assemblies and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      I5-3 (+) - Body ground Always 10 kΩ or higher
      I5-4 (-) - Body ground Always 10 kΩ or higher
      J4-3 (+) - Body ground Always 10 kΩ or higher
      J4-4 (-) - Body ground Always 10 kΩ or higher

    25. Measure the resistance between each of the rear No. 2 speaker assemblies and body ground to check for a short circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K1-3 (+) - Body ground Always 10 kΩ or higher
      K1-4 (-) - Body ground Always 10 kΩ or higher
      L1-3 (+) - Body ground Always 10 kΩ or higher
      L1-4 (-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY


    1. A019NQUE77
      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
        for 12 Speakers
        Tester Connection Condition Specified Condition
        I3-1 - I3-2 Always 3.2 to 4.8 Ω
        J2-1 - J2-2 Always 3.2 to 4.8 Ω
        for 15 Speakers
        Tester Connection Condition Specified Condition
        I3-1 - I3-2 Always 5.0 to 7.0 Ω
        J2-1 - J2-2 Always 5.0 to 7.0 Ω

    NG

    REPLACE FRONT NO. 1 SPEAKER ASSEMBLY Click here

    OK

  3. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY


    1. A019KC9E26
      Text in Illustration
      *A for RH
      *B for LH
      *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
        Tester Connection Condition Specified Condition
        I5-1 (TWR+) - I5-2 (TWR-) Always 10 kΩ or higher
        I5-1 (TWR+) - I5-3 (+) Always Below 1 Ω
        I5-2 (TWR-) - I5-4 (-) Always Below 1 Ω
        J4-1 (TWL+) - J4-2 (TWL-) Always 10 kΩ or higher
        J4-1 (TWL+) - J4-3 (+) Always Below 1 Ω
        J4-2 (TWL-) - J4-4 (-) Always Below 1 Ω

    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.


    NG

    INSPECT FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

    END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

  5. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY


    1. A019OXPE23
      Text in Illustration
      *A for RH
      *B for LH
      *a

      Component without harness connected

      (Front No. 3 Speaker Assembly)

      Resistance check


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

        Standard Resistance
        for 12 Speakers
        Tester Connection Condition Specified Condition
        I6-1 - I6-2 Always 3.2 to 4.8 Ω
        J6-1 - J6-2 Always 3.2 to 4.8 Ω
        for 15 Speakers
        Tester Connection Condition Specified Condition
        I6-1 - I6-2 Always 4.8 to 6.4 Ω
        J6-1 - J6-2 Always 4.8 to 6.4 Ω

    NG

    REPLACE FRONT NO. 3 SPEAKER ASSEMBLY Click here

    OK

  6. INSPECT FRONT NO. 4 SPEAKER ASSEMBLY


    1. A019OXPE24
      Text in Illustration
      *a

      Component without harness connected

      (Front No. 4 Speaker Assembly)

      Resistance check


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

        Standard Resistance
        for 12 Speakers
        Tester Connection Condition Specified Condition
        H2-1 (-) - H2-2 (+) Always 4.8 to 7.2 Ω
        for 15 Speakers
        Tester Connection Condition Specified Condition
        H2-1 (-) - H2-2 (+) Always 4.6 to 7.0 Ω

    NG

    REPLACE FRONT NO. 4 SPEAKER ASSEMBLY Click here

    OK

  7. INSPECT REAR NO. 1 SPEAKER ASSEMBLY


    1. A019NQUE78
      Text in Illustration
      *A for RH
      *B for LH
      *a

      Component without harness connected

      (Rear No. 1 Speaker Assembly)

      Resistance check


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

        Standard Resistance
        for 12 Speakers
        Tester Connection Condition Specified Condition
        K4-1 - K4-2 Always 3.2 to 4.8 Ω
        L4-1 - L4-2 Always 3.2 to 4.8 Ω
        for 15 Speakers
        Tester Connection Condition Specified Condition
        K4-1 - K4-2 Always 4.8 to 7.2 Ω
        L4-1 - L4-2 Always 4.8 to 7.2 Ω

    NG

    REPLACE REAR NO. 1 SPEAKER ASSEMBLY Click here

    OK

  8. INSPECT REAR NO. 2 SPEAKER ASSEMBLY


    1. A019KC9E27
      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
        K1-1 (+TW) - K1-2 (-TW) Always 10 kΩ or higher
        K1-1 (+TW) - K1-3 (+) Always Below 1 Ω
        K1-2 (-TW) - K1-4 (-) Always Below 1 Ω
        L1-1 (+TW) - L1-2 (-TW) Always 10 kΩ or higher
        L1-1 (+TW) - L1-3 (+) Always Below 1 Ω
        L1-2 (-TW) - L1-4 (-) Always Below 1 Ω

    NG

    REPLACE REAR NO. 2 SPEAKER ASSEMBLY Click here

    OK

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

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


    NG

    INSPECT REAR NO. 3 SPEAKER ASSEMBLY Click here

    OK

    END (REAR NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)

  10. INSPECT REAR NO. 3 SPEAKER ASSEMBLY


    1. A019KC9E29
      Text in Illustration
      *A for 12 Speakers
      *B for 15 Speakers
      *a

      Component without harness connected

      (Rear No. 3 Speaker Assembly)

      Resistance check


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

        Standard Resistance
        for 12 Speakers
        Tester Connection Condition Specified Condition
        P22-3 (+) - P22-4 (-) Always 1.6 to 2.4 Ω
        for 15 Speakers
        Tester Connection Condition Specified Condition
        P22-2 (WF2+) - P22-1 (WF1+) Always 11.6 to 12.4 Ω

    2. Proceed to the next step based on the inspection result.

      Result
      Condition Proceed to
      OK (for 15 Speakers, w/ Telematics Transceiver) A
      OK (for 12 Speakers, w/ Telematics Transceiver) B
      OK (w/o Telematics Transceiver) C
      NG D

    B

    INSPECT TELEMATICS TRANSCEIVER Click here

    C

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

    D

    REPLACE REAR NO. 3 SPEAKER ASSEMBLY Click here

    A

  11. INSPECT QUARTER SIDE SPEAKER ASSEMBLY


    1. A019OHEE23
      Text in Illustration
      *A for RH
      *B for LH
      *a

      Component without harness connected

      (Quarter Side Speaker Assembly)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        O24-1 - O24-2 Always 4.6 to 7.0 Ω
        P30-1 - P30-2 Always 4.6 to 7.0 Ω

    2. Proceed to the next step based on the inspection result.

      Result
      Condition Proceed to
      OK (w/ Telematics Transceiver) A
      OK (w/o Telematics Transceiver) B
      NG C

    B

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

    C

    REPLACE QUARTER SIDE SPEAKER ASSEMBLY Click here

    A

  12. INSPECT TELEMATICS TRANSCEIVER


    1. A019LODE26
      Text in Illustration
      *a

      Component without harness connected

      (Telematics Transceiver)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        G25-2 (SPI+) - G25-5 (SPO+) Always Below 1 Ω
        G25-3 (SPI-) - G25-6 (SPO-) Always Below 1 Ω
        G25-2 (SPI+) - G25-3 (SPI-) Always 10 kΩ or higher
        G25-5 (SPO+) - G25-6 (SPO-) Always 10 kΩ or higher
        G25-3 (SPI-) - Body ground Always 10 kΩ or higher
        G25-2 (SPI+) - Body ground Always 10 kΩ or higher

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here

    OK

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