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Inspection Procedure

  1. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the connectors shown in the illustration from the stereo component amplifier or radio receiver and speakers.
      2. Fig 1: Identifying Speakers And Stereo Component Amplifier Connector Terminals
      G05676447Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. 10 Speaker System:

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

      Standard resistance: Below 1 Ω 

    3. 6 speaker System:

      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: Below 1 Ω 

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

      Standard resistance: Below 1 Ω 

    5. 10 Speaker System:

      Measure the resistance between each of the rear speakers and the stereo component amplifier to check for an open circuit in the wire harness.

      Standard resistance: Below 1 Ω 

    6. 6 Speaker System:

      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: Below 1 Ω 

    7. 10 Speaker System:

      Measure the resistance between each of the rear stereo component speakers and the stereo component amplifier to check for an open circuit in the wire harness.

      Standard resistance: Below 1 Ω 

    8. 10 Speaker System:

      Measure the resistance between the front stereo component speaker and the stereo component amplifier to check for an open circuit in the wire harness.

      Standard resistance: Below 1 Ω 

    9. 10 Speaker System:

      Measure the resistance between the woofer box speaker and the stereo component amplifier to check for an open circuit in the wire harness.

      Standard resistance: Below 1 Ω 

      Fig 2: Identifying Woofer Box Speaker Connector
      G05141072Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    10. Measure the resistance between the each speaker and body ground to check for a short circuit in the wire harness.

      Standard resistance: 10 kΩ or higher 

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  2. INSPECT FRONT NO. 1 SPEAKER 
    1. Resistance check.
      1. Measure the resistance between the terminals of the speaker.

        Standard resistance: 10 Speaker System: 4 to 6 Ω 

        6 Speaker System: Approximately 4 Ω 

    NG: REPLACE FRONT NO. 1 SPEAKER 

    OK: Go to Next Step 

  3. INSPECT REAR SPEAKER 
    1. Resistance check.
      1. Measure the resistance between the terminals of the speaker.

        10 Speaker System: Approximately 2.4 Ω 

        6 Speaker System: Approximately 4 Ω 

    NG: REPLACE REAR SPEAKER 

    OK: Go to Next Step 

  4. INSPECT FRONT NO. 2 SPEAKER 
    1. Check that the malfunction disappears when another speaker in good condition is installed.

      Standard: Malfunction disappears. 

      HINT:

      • Connect all the connectors to the front No. 2 speaker.
      • When there is a possibility that either the right or left front speaker is detective, inspect by interchanging the right one with the left one.
      • Perform the above inspection on both LH and RH sides.

    OK: REPLACE FRONT NO. 2 SPEAKER 

    NG: Go to Next Step 

  5. CONFIRM MODEL 

    Result 

    RESULT CHART

    Result Proceed to
    10 Speaker System A
    6 Speaker System B

    B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

    A: Go to Next Step 

  6. INSPECT WOOFER BOX SPEAKER 
    1. Resistance check.
      1. Measure the resistance according to the value(s) in the table below.
        NOTE: The speaker should not be removed for checking.

        Standard resistance 

        TESTER CONNECTION SPECIFIED CONDITION

        Tester connection Condition Specified condition
        1 - 3 Always Approximately 1.2 Ω
        2 - 4 Always Approximately 1.2 Ω
        Fig 3: Identifying Woofer Box Speaker Connector
        G04966995Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE WOOFER BOX SPEAKER 

    OK: Go to Next Step 

  7. INSPECT REAR STEREO COMPONENT SPEAKER 
    1. Check that the malfunction disappears when another speaker in good condition is installed.

      OK: Malfunction disappears. 

      HINT:

      • Connect all the connectors to the rear stereo component speaker.
      • When there is a possibility that either the right or left rear speaker is detective, inspect by interchanging the right one with the left one.

    OK: REPLACE REAR STEREO COMPONENT SPEAKER 

    NG: Go to Next Step 

  8. INSPECT FRONT STEREO COMPONENT SPEAKER 
    1. Resistance check.
      1. Measure the resistance between the terminals of the speaker.

        Standard resistance: 1.2 to 2.2 Ω 

    NG: REPLACE FRONT STEREO COMPONENT SPEAKER 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

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