AUDIO AND VISUAL SYSTEM Speaker Circuit

DESCRIPTION

If there is a short in this circuit, the radio receiver detects it and stops output to the speakers.

Thus sound cannot be heard from the speakers even if there is no malfunction in the radio receiver or speakers.

WIRING DIAGRAM

A017CC1E03

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. A017F55E01

      Disconnect the connectors shown in the illustration from the stereo component amplifier or radio receiver and speakers.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      E6-2 (FL+) - F2-2 Always Below 1 Ω
      E6-6 (FL-) - F2-4 Always Below 1 Ω
      E6-1 (FR+) - I2-2 Always Below 1 Ω
      E6-5 (FR-) - I2-4 Always Below 1 Ω

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

      Standard resistance
      Tester Connection Condition Specified Condition
      E6-2 (FL+) - H5-1 Always Below 1 Ω
      E6-6 (FL-) - H5-2 Always Below 1 Ω
      E6-1 (FR+) - G5-1 Always Below 1 Ω
      E6-5 (FR-) - G5-2 Always Below 1 Ω

    4. Measure the resistance between each of the rear speakers and the radio receiver to check for an open circuit in the wire harness.

      Standard resistance
      Tester Connection Condition Specified Condition
      E7-2 (RL+) - K1-1 Always Below 1 Ω
      E7-6 (RL-) - K1-2 Always Below 1 Ω
      E7-1 (RR+) - J1-1 Always Below 1 Ω
      E7-3 (RR-) - J1-2 Always Below 1 Ω

    5. Measure the resistance between each speaker and body ground to check for a short circuit in the wire harness.

      Standard resistance
      Tester Connection Condition Specified Condition
      E6-2 (FL+) - Body ground Always 10 kΩ or higher
      E6-6 (FL-) - Body ground Always 10 kΩ or higher
      E6-1 (FR+) - Body ground Always 10 kΩ or higher
      E6-5 (FR-) - Body ground Always 10 kΩ or higher
      E7-2 (RL+) - Body ground Always 10 kΩ or higher
      E7-6 (RL-) - Body ground Always 10 kΩ or higher
      E7-1 (RR+) - Body ground Always 10 kΩ or higher
      E7-3 (RR-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT FRONT NO. 1 SPEAKER


    1. Resistance check


      1. Measure the resistance between the terminals of the speaker.

        Standard resistance
        Tester Connection Condition Specified Condition
        H5-1 - H5-2 Always Approximately 4 Ω
        G5-1 - G5-2 Always Approximately 4 Ω

    NG

    REPLACE FRONT NO. 1 SPEAKER Click here

    OK

  3. INSPECT FRONT NO. 2 SPEAKER


    1. Check that the malfunction disappears when another speaker in good condition is installed.

      OK
      Malfunction disappears.

      Tech Tips


      • Connect all the connectors to the front No. 2 speaker.

      • 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 SPEAKER Click here

    OK

    REPLACE FRONT NO. 2 SPEAKER Click here

  4. INSPECT REAR SPEAKER


    1. Resistance check


      1. Measure the resistance between the terminals of the speaker.

        Standard resistance
        Tester Connection Condition Specified Condition
        K1-1 - K1-2 Always Approximately 4 Ω
        J1-1 - J1-2 Always Approximately 4 Ω

    NG

    REPLACE REAR SPEAKER Click here

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here