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Inspection Procedure

  1. CONFIRM MODEL 
    1. Check the audio models.

    Result 

    RESULT REFERENCE

    Result Proceed to
    Separate Type Amplifier System A
    Built-in Type Amplifier System B

    B: Go to step  11

    A: Go to next step 

  2. CHECK SPEAKER 
    1. Check that the speakers sound.

    Result 

    RESULT REFERENCE

    Result Proceed to
    Front No. 1 speaker does not operate A
    Front No. 2 speaker does not operate B
    Rear No. 1 speaker does not operate C
    Stereo component speaker rear does not operate D
    All speakers do not operate E

    B: Go to step  5

    C: Go to step  7

    D: Go to step  9

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

    A: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 1 SPEAKER) 
    1. Disconnect the L14 amplifier connector.
    2. Disconnect the H1 (*1) or G1 (*2) speaker connector.
    3. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    STANDARD RESISTANCE REFERENCE CHART

    Tester Connection Specified Condition
    L14-1 (FL-) - H1-2 H) Below 1 Ω
    L14-2 (FL+) - H1-1 (*1) Below 1 Ω
    L14-3 (FR-) - G1-2 (*2) Below 1 Ω
    L14-9 (FR+) - G1-1 (*2) Below 1 Ω
    L14-3 (FR-) - Body ground 10 kΩ or higher
    L14-9 (FR+) - Body ground 10 kΩ or higher
    L14-1 (FL-) - Body ground 10 kΩ or higher
    L14-2 (FL+) - Body ground 10 kΩ or higher

    HINT:

    • *1: for LH
    • *2: for RH
    Fig 1: Checking Harness And Connector (Stereo Component Amplifier - Front No. 1 Speaker)
    G05184750Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. INSPECT FRONT NO. 1 SPEAKER 
    1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    STANDARD RESISTANCE REFERENCE CHART

    Tester Connection Specified Condition
    1 - 2 2.6 Ω

    NG: REPLACE FRONT NO. 1 SPEAKER ASSEMBLY 

    Fig 2: Inspecting Front No. 1 Speaker Connector
    G06000176Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  5. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 2 SPEAKER) 
    1. Disconnect the L15 amplifier connector.
    2. Disconnect the G7 (*1) or H6 (*2) speaker connector.
    3. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    STANDARD RESISTANCE REFERENCE CHART

    Tester Connection Specified Condition
    L15-6 (FR-) - G7-2 (*1) Below 1 Ω
    L15-2 (FR+) - G7-1 (*1) Below 1 Ω
    L15-7 (FL-) - H6-2 (*2) Below 1 Ω
    L15-8 (FL+) - H6-1 (*2) Below 1 Ω
    L15-6 (FR-) - Body ground 10 kΩ or higher
    L15-2 (FR+) - Body ground 10 kΩ or higher
    L15-7 (FL-) - Body ground 10 kΩ or higher
    L15-8 (FL+) - Body ground 10 kΩ or higher

    HINT:

    • *1: for RH
    • *2: for LH
    Fig 3: Checking Harness And Connector (Stereo Component Amplifier - Front No. 2 Speaker)
    G05184752Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. INSPECT FRONT NO. 2 SPEAKER 
    1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    STANDARD RESISTANCE REFERENCE CHART

    Tester Connection Specified Condition
    1 - 2 2.5 Ω

    NG: REPLACE FRONT NO. 2 SPEAKER ASSEMBLY 

    Fig 4: Inspecting Front No. 2 Speaker Connector
    G06000178Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  7. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - REAR NO. 1 SPEAKER) 
    1. Disconnect the L15 amplifier connector.
    2. Disconnect the J2 (*1) or I2 (*2) speaker connector.
    3. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    STANDARD RESISTANCE REFERENCE CHART

    Tester Connection Specified Condition
    L15-3 (RL+) - J2-1 (*1) Below 1 Ω
    L15-9 (RL-) - J2-2 (*1) Below 1 Ω
    L15-10 (RR+) - I2-1 (*2) Below 1 Ω
    L15-4 (RR-) - I2-2 (*2) Below 1 Ω
    L15-3 (RL+) - Body ground 10 kΩ or higher
    L15-9 (RL-) - Body ground 10 kΩ or higher
    L15-10 (RR+) - Body ground 10 kΩ or higher
    L15-4 (RR-) - Body ground 10 kΩ or higher

    HINT:

    • *1: for LH
    • *2: for RH
    Fig 5: Checking Harness And Connector (Stereo Component Amplifier - Rear No. 1 Speaker)
    G05184754Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  8. INSPECT REAR NO. 1 SPEAKER 
    1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    STANDARD RESISTANCE REFERENCE CHART

    Tester Connection Specified Condition
    1 - 2 3.1 Ω

    NG: REPLACE REAR NO. 1 SPEAKER ASSEMBLY 

    Fig 6: Inspecting Rear No. 1 Speaker Connector
    G06000176Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  9. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - STEREO COMPONENT SPEAKER REAR) 
    1. Disconnect the L14 amplifier connector.
    2. Disconnect the Q5 speaker connector.
    3. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    STANDARD RESISTANCE REFERENCE CHART

    Tester Connection Specified Condition
    L14-5 (WFL+) - Q5-1 (WF+) Below 1 Ω
    L14-12 (WFL-) - Q5-2 (WF-) Below 1 Ω
    L14-10 (WFR-) - Q5-3 (WF-) Below 1 Ω
    L14-4 (WFR+) - Q5-4 (WF+) Below 1 Ω
    L14-5 (WFL+) - Body ground 10 kΩ or higher
    L14-12 (WFL-) - Body ground 10 kΩ or higher
    L14-10 (WFR-) - Body ground 10 kΩ or higher
    L14-4 (WFR+) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 7: Checking Harness And Connector (Stereo Component Amplifier - Stereo Component Speaker Rear)
    G05184756Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  10. INSPECT STEREO COMPONENT SPEAKER ASSEMBLY REAR 
    1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    STANDARD RESISTANCE REFERENCE CHART

    Tester Connection Specified Condition
    1 - 4 Approx. 2 Ω

    NG: REPLACE STEREO COMPONENT SPEAKER ASSEMBLY REAR 

    Fig 8: Inspecting Stereo Component Speaker Assembly Rear Connector
    G06000182Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  11. CHECK SPEAKER 
    1. Check that the speakers sound.

    Result 

    RESULT REFERENCE

    Result Proceed to
    Front No. 1 speaker does not operate A
    Front No. 2 speaker does not operate B
    Rear No. 1 speaker does not operate C
    All speakers do not operate D

    B: Go to step  14

    C: Go to step  16

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

    A: Go to next step 

  12. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Check that the front No. 2 speaker sounds.

      OK: 

      Speaker sounds. 

    NG: Go to step  14

    OK: Go to next step 

  13. CHECK HARNESS AND CONNECTOR (FRONT NO. 1 SPEAKER - FRONT NO. 2 SPEAKER) 
    1. Disconnect the H1 (*1) and H7 (*1), or G1 (*2) and G8 (*2) speaker connectors.
    2. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    STANDARD RESISTANCE REFERENCE CHART

    Tester Connection Specified Condition
    H7-3 (+) - H1-1 (*1) Below 1 Ω
    H7-1 (-) - H1-2 (*1) Below 1 Ω
    G8-3 (+) - G1-1 (*2) Below 1 Ω
    G8-1 (-) - G1-2 (*2) Below 1 Ω
    H7-3 (+) - Body ground 10 kΩ or higher
    H7-1 (-) - Body ground 10 kΩ or higher
    G8-3 (+) - Body ground 10 kΩ or higher
    G8-1 (-) - Body ground 10 kΩ or higher

    HINT:

    • *1: for LH
    • *2: for RH
    Fig 9: Checking Harness And Connector (Front No. 1 Speaker - Front No. 2 Speaker)
    G05184783Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE FRONT NO. 1 SPEAKER ASSEMBLY 

  14. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - FRONT NO. 2 SPEAKER) 
    1. Disconnect the E47 receiver connector.
    2. Disconnect the H7 (*1) or G8 (*2) speaker connector.
    3. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    STANDARD RESISTANCE REFERENCE CHART

    Tester Connection Specified Condition
    E47-2 (FL+) - H7-4 (TWL+) (*1) Below 1 Ω
    E47-6 (FL-) - H7-2 (TWL-) (*1) Below 1 Ω
    E47-1 (FR+) - G8-4 (TWR+) (*2) Below 1 Ω
    E47-5 (FR-) - G8-2 (TWR-) (*2) Below 1 Ω
    E47-1 (FR+) - Body ground 10 kΩ or higher
    E47-5 (FR-) - Body ground 10 kΩ or higher
    E47-2 (FL+) - Body ground 10 kΩ or higher
    E47-6 (FL-) - Body ground 10 kΩ or higher

    HINT:

    • *1: for LH
    • *2: for RH
    Fig 10: Checking Harness And Connector (Radio Receiver - Front No. 2 Speaker)
    G05184784Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

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

      OK: 

      Malfunction disappears. 

    HINT:

    • Connect all connectors to the speakers.
    • 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.

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

    OK: REPLACE FRONT NO. 2 SPEAKER ASSEMBLY 

  16. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - REAR NO. 1 SPEAKER) 
    1. Disconnect the E48 receiver connector.
    2. Disconnect the J2 (*1) or I2 (*2) speaker connector.
    3. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    STANDARD RESISTANCE REFERENCE CHART

    Tester Connection Specified Condition
    E48-2 (RL+) - J2-1 (*1) Below 1 Ω
    E48-6 (RL-) - J2-2 Below 1 ft
    E48-1 (RR+) - I2-1 (*2) Below 1 Ω
    E48-3 (RR-) I2-2 (*2) Below 1 Ω
    E48-2 (RL+) -Body ground 10 kΩ or higher
    E48-6 (RL-) - Body ground 10 kΩ or higher
    E48-1 (RR+) - Body ground 10 kΩ or higher
    E48-3 (RR-) - Body ground 10 kΩ or higher

    HINT:

    • *1: for LH
    • *2: for RH
    Fig 11: Checking Harness And Connector (Radio Receiver - Rear No. 1 Speaker)
    G05184785Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  17. INSPECT REAR NO. 1 SPEAKER 
    1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    STANDARD RESISTANCE REFERENCE CHART

    Tester Connection Specified Condition
    1-2 Approx. 4 Ω

    NG: REPLACE REAR NO. 1 SPEAKER ASSEMBLY 

    Fig 12: Inspecting Rear No. 1 Speaker Connector
    G06000176Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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