AUDIO AND VISUAL SYSTEM Speaker Circuit

DESCRIPTION


WIRING DIAGRAM

A01CDYUE01
A01CG01E01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. Disconnect the connectors from the radio receiver assembly, radio setting condenser and speakers.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F3-1 (FR+) - I1-1 Always Below 1 Ω
      F3-5 (FR-) - I1-2 Always Below 1 Ω
      F3-2 (FL+) - J1-1 Always Below 1 Ω
      F3-6 (FL-) - J1-2 Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F3-1 (FR+) - H2-2 Always Below 1 Ω
      F3-5 (FR-) - H2-4 Always Below 1 Ω
      F3-2 (FL+) - H3-2 Always Below 1 Ω
      F3-6 (FL-) - H3-4 Always Below 1 Ω

    4. 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
      F4-1 (RR+) - F7-12 (RIN) Always Below 1 Ω
      F4-3 (RR-) - F7-11 (ROUT) Always Below 1 Ω
      F4-2 (RL+) - F7-6 (LIN) Always Below 1 Ω
      F4-6 (RL-) - F7-7 (LOUT) Always Below 1 Ω

    5. Measure the resistance between each of the rear No. 1 with box speakers and the radio setting condenser to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K10-1 - F7-4 (RO+) Always Below 1 Ω
      K10-2 - F7-9 (RO-) Always Below 1 Ω
      L10-1 - F7-2 (LO+) Always Below 1 Ω
      L10-2 - F7-3 (LO-) Always Below 1 Ω

    6. Measure the resistance between each of the roof speakers and the radio setting condenser to check for an open circuit in the wire harness.

      Standard Resistance
      Tester Connection Condition Specified Condition
      R4-1 - F7-5 (RI+) Always Below 1 Ω
      R4-2 - F7-10 (RI-) Always Below 1 Ω
      R3-1 - F7-1 (LI+) Always Below 1 Ω
      R3-2 - F7-8 (LI-) Always Below 1 Ω

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F3-1 (FR+) - Body ground Always 10 kΩ or higher
      F3-5 (FR-) - Body ground Always 10 kΩ or higher
      F3-2 (FL+) - Body ground Always 10 kΩ or higher
      F3-6 (FL-) - Body ground Always 10 kΩ or higher
      F4-1 (RR+) - Body ground Always 10 kΩ or higher
      F4-3 (RR-) - Body ground Always 10 kΩ or higher
      F4-2 (RL+) - Body ground Always 10 kΩ or higher
      F4-6 (RL-) - Body ground Always 10 kΩ or higher
      K10-1 - Body ground Always 10 kΩ or higher
      K10-2 - Body ground Always 10 kΩ or higher
      L10-1 - Body ground Always 10 kΩ or higher
      L10-2 - Body ground Always 10 kΩ or higher
      R4-1 - Body ground Always 10 kΩ or higher
      R4-2 - Body ground Always 10 kΩ or higher
      R3-1 - Body ground Always 10 kΩ or higher
      R3-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT FRONT NO. 1 SPEAKER


    1. A01CFOCE89
      Text in Illustration
      *a

      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
        I1-1 - I1-2 Always 3.2 to 4.8 Ω
        J1-1 - J1-2 Always 3.2 to 4.8 Ω

    NG

    REPLACE FRONT NO. 1 SPEAKER Click here

    OK

  3. REPLACE 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 REAR NO. 1 WITH BOX SPEAKER Click here

    OK

    END (FRONT NO. 2 SPEAKER WAS DEFECTIVE)

  4. INSPECT REAR NO. 1 WITH BOX SPEAKER


    1. A01CFOCE90
      Text in Illustration
      *a

      Component without harness connected

      (Rear No. 1 with Box Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        K10-1 - K10-2 Always 3.2 to 4.8 Ω
        L10-1 - L10-2 Always 3.2 to 4.8 Ω

    NG

    REPLACE REAR NO. 1 WITH BOX SPEAKER Click here

    OK

  5. INSPECT ROOF SPEAKER


    1. A01CAUDE02
      Text in Illustration
      *a

      Component without harness connected

      (Roof Speaker)

      Resistance check


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        R4-1 - R4-2 Always 6.4 to 9.6 Ω
        R3-1 - R3-2 Always 6.4 to 9.6 Ω

    NG

    REPLACE ROOF SPEAKER Click here

    OK

  6. REPLACE RADIO SETTING CONDENSER


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

      OK
      Malfunction disappears.

    NG

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

    OK

    END (RADIO SETTING CONDENSER WAS DEFECTIVE)