AUDIO AND VISUAL SYSTEM (w/o 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

A01ND5XE01
A01NGCIE01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. A01NFZTE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Stereo Component Amplifier Assembly)
      *2

      Front view of wire harness connector

      (to Stereo Component Amplifier Assembly)
      *3

      Front view of wire harness connector

      (to Front No. 2 Speaker)
      *4

      Front view of wire harness connector

      (to Front No. 3 speaker, Front No. 4 Speaker)
      *5

      Front view of wire harness connector

      (to Front No. 1 Speaker, Rear No. 1 Speaker)

      Disconnect the connectors shown in the illustration from the stereo component amplifier assembly and speakers.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O34-1 (FL+) - J4-1 (TWL+) Always Below 1 Ω
      O34-5 (FL-) - J4-2 (TWL-) Always Below 1 Ω
      O34-2 (FR+) - I5-1 (TWR+) Always Below 1 Ω
      O34-6 (FR-) - I5-2 (TWR-) Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O16-3 (WFL+) - J2-1 Always Below 1 Ω
      O16-8 (WFL-) - J2-2 Always Below 1 Ω
      O16-10 (WFR+) - I3-1 Always Below 1 Ω
      O16-9 (WFR-) - I3-2 Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O34-8 (CTR+) - H2-2 Always Below 1 Ω
      O34-7 (CTR-) - H2-1 Always Below 1 Ω

    5. Measure the resistance between each of the rear No. 1 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O16-4 (RL+) - L4-1 Always Below 1 Ω
      O16-11 (RL-) - L4-2 Always Below 1 Ω
      O16-5 (RR+) - K4-1 Always Below 1 Ω
      O16-12 (RR-) - K4-2 Always Below 1 Ω

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

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

    7. 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
      O16-3 (WFL+) - Body ground Always 10 kΩ or higher
      O16-8 (WFL-) - Body ground Always 10 kΩ or higher
      O16-10 (WFR+) - Body ground Always 10 kΩ or higher
      O16-9 (WFR-) - Body ground Always 10 kΩ or higher
      O16-4 (RL+) - Body ground Always 10 kΩ or higher
      O16-11 (RL-) - Body ground Always 10 kΩ or higher
      O16-5 (RR+) - Body ground Always 10 kΩ or higher
      O16-12 (RR-) - Body ground Always 10 kΩ or higher
      O34-1 (FL+) - Body ground Always 10 kΩ or higher
      O34-5 (FL-) - Body ground Always 10 kΩ or higher
      O34-2 (FR+) - Body ground Always 10 kΩ or higher
      O34-6 (FR-) - Body ground Always 10 kΩ or higher
      O34-8 (CTR+) - Body ground Always 10 kΩ or higher
      O34-7 (CTR-) - Body ground Always 10 kΩ or higher

    8. Measure the resistance between each of the front No. 2 speakers 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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT FRONT NO. 1 SPEAKER


    1. A01NDQME24
      Text in Illustration
      *1

      Component without harness connected

      (Front No. 1 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        J2-1 - J2-2 Always 3.2 to 4.8 Ω
        I3-1 - I3-2 Always 3.2 to 4.8 Ω

    NG

    REPLACE FRONT NO. 1 SPEAKER Click here

    OK

  3. INSPECT FRONT NO. 2 SPEAKER


    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 speakers 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 Click here

    OK

    END (FRONT NO. 2 SPEAKER WAS DEFECTIVE)

  4. INSPECT FRONT NO. 3 SPEAKER


    1. A01NHCNE06
      Text in Illustration
      *1

      Component without harness connected

      (Front No. 3 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        J6-1 - J6-2 Always 3.2 to 4.8 Ω
        I6-1 - I6-2 Always 3.2 to 4.8 Ω

    NG

    REPLACE FRONT NO. 3 SPEAKER Click here

    OK

  5. INSPECT REAR NO. 1 SPEAKER


    1. A01NDQME25
      Text in Illustration
      *1

      Component without harness connected

      (Rear No. 1 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        L4-1 - L4-2 Always 3.2 to 4.8 Ω
        K4-1 - K4-2 Always 3.2 to 4.8 Ω

    NG

    REPLACE REAR NO. 1 SPEAKER Click here

    OK

  6. INSPECT FRONT NO. 4 SPEAKER


    1. A01NHCNE07
      Text in Illustration
      *1

      Component without harness connected

      (Front No. 4 Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        H2-1 - H2-2 Always 4.8 to 7.2 Ω

    NG

    REPLACE FRONT NO. 4 SPEAKER Click here

    OK

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