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Inspection Procedure

  1. CHECK SPEAKER 
    1. Check whether sound is emitted from each speaker.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Front No. 1 speakers have problems A
      Front No. 2 speakers have problems B
      Rear speakers have problems C
      Woofer speaker has problems (w/ woofer speaker) D
      Roof speakers have problems E

    B:  Go to step  4

    C:  Go to step  6

    D:  Go to step  8

    E:  Go to step  10

    A: Go TO NEXT STEP 

  2. INSPECT FRONT NO. 1 SPEAKERS 
    1. Check the left and right front No. 1 speakers (See ON-VEHICLE INSPECTION  ).

      OK: Front No. 1 speakers are normal. 

    NG: REPLACE FRONT NO. 1 SPEAKER 

    OK: Go TO NEXT STEP 

  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - FRONT NO. 1 SPEAKER) 
    1. Disconnect the E41 receiver connector.
    2. Disconnect the G4 and H4 front No. 1 speaker connectors.
      Fig 1: Identifying Radio Receiver & Front No. 1 Speaker Connector Terminals
      G05114056Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      E41-2 (FL+) - H4-1 Below 1 Ω
      E41-6 (FL-) - H4-2 Below 1 Ω
      E41-2 (FL+) or H4-1 - Body ground 10 kΩ or higher
      E41-6 (FL-) or H4-2 - Body ground 10 kΩ or higher
      E41-1 (FR+) - G4-1 Below 1 Ω
      E41-5 (FR-) - G4-2 Below 1 Ω
      E41-1 (FR+) or G4-1 - Body ground 10 kΩ or higher
      E41-5 (FR-) or 64-2 - Body ground 10 kΩ or higher
    4. Reconnect the receiver connector.
    5. Reconnect the front No. 1 speaker connectors.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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

  4. INSPECT FRONT NO. 2 SPEAKERS 
    1. Check the left and right front No. 2 speakers (See ON-VEHICLE INSPECTION  ).

      OK: Front No. 2 speakers are normal. 

    NG: REPLACE FRONT NO. 2 SPEAKER 

    OK: Go TO NEXT STEP 

  5. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - FRONT NO. 2 SPEAKER) 
    1. Disconnect the E41 receiver connector.
    2. Disconnect the F3 and F4 front No. 2 speaker connectors.
      Fig 2: Identifying Radio Receiver & Front No. 2 Speaker Connector Terminals
      G05114057Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      E41-2 (FL+) - F4-4 Below 1 Ω
      E41-6 (FL-) - F4-3 Below 1 Ω
      E41-2 (FL+) or F4-4 - Body ground 10 kΩ or higher
      E41-6 (FL-) or F4-3 - Body ground 10 kΩ or higher
      E41-1 (FR+) - F3-4 Below 1 Ω
      E41-5 (FR-) - F3-3 Below 1 Ω
      E41-1 (FR+) or F3-4 - Body ground 10 kΩ or higher
      E41-5 (FR-) or F3-3 - Body ground 10 kΩ or higher
    4. Reconnect the receiver connector.
    5. Reconnect the front No. 2 speaker connectors.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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

  6. INSPECT REAR SPEAKERS 
    1. Check the left and right rear speakers (See ON-VEHICLE INSPECTION  ).

      OK: Rear speakers are normal. 

    NG: REPLACE REAR SPEAKER 

    OK: Go TO NEXT STEP 

  7. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - REAR SPEAKER) 
    1. Disconnect the E42 receiver connector.
    2. Disconnect the L9 and L18 rear speaker connectors.
      Fig 3: Identifying Radio Receiver & Rear Speaker Connector Terminals
      G05114058Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      E42-2 (RL+) - L9-1 Below 1 Ω
      E42-6 (RL-) - L9-2 Below 1 Ω
      E42-2 (RL+) or L9-1 - Body ground 10 kΩ or higher
      E42-6 (RL-) or L9-2 - Body ground 10 kΩ or higher
      E42-1 (RR+) - L18-1 Below 1 Ω
      E42-3 (RR-) - L18-2 Below 1 Ω
      E42-1 (RR+) or L18-1 - Body ground 10 kΩ or higher
      E42-3 (RR-) or L18-2 - Body ground 10 kΩ or higher
    4. Reconnect the receiver connector.
    5. Reconnect the rear speaker connectors.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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

  8. INSPECT WOOFER SPEAKER 
    1. Check the woofer speaker.

      OK: Woofer speaker is normal. 

    NG: REPLACE WOOFER SPEAKER 

    OK: Go TO NEXT STEP 

  9. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - WOOFER SPEAKER) 
    1. Disconnect the E42 receiver connector.
    2. Disconnect the K4 woofer speaker connector.
      Fig 4: Identifying Radio Receiver & Woofer Speaker Connector Terminals
      G05114059Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      E42-2 (RL+) - K4-2 (L+) Below 1 Ω
      E42-6 (RL-) - K4-6 (L-) Below 1 Ω
      E42-2 (RL+) or K4-2 (L+) - Body ground 10 kΩ or higher
      E42-6 (RL-) or K4-6 (L-) - Body ground 10 kΩ or higher
      E42-1 (RR+) - E4-1 (R+) Below 1 Ω
      E42-3 (RR-) - K4-5 (R-) Below 1 Ω
      E42-1 (RR+) or K4-1 (R+) - Body ground 10 kΩ or higher
      E42-3 (RR-) or K4-5 (R-) - Body ground 10 kΩ or higher
    4. Reconnect the receiver connector.
    5. Reconnect the woofer speaker connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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

  10. INSPECT ROOF SPEAKERS 
    1. Check the left and right roof speakers (See ROOF SPEAKER  ).

      OK: Roof speakers are normal. 

    NG: REPLACE ROOF SPEAKER 

    OK: Go TO NEXT STEP 

  11. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - CONDENSER) 
    1. Disconnect the E42 receiver connector.
    2. Disconnect the E27 condenser connector.
      Fig 5: Identifying Radio Receiver & Condenser Connector Terminals
      G05114060Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      E42-2 (RL+) - E27-2 (LI+) Below 1 Ω
      E42-6 (RL-) - E27-1 (LI-) Below 1 Ω
      E42-2 (RL+) or E27-2 (LI+) - Body ground 10 kΩ or higher
      E42-6 (RL-) or E27-1 (LI-) - Body ground 10 kΩ or higher
      E42-1 (RR+) - E27-4 (RI+) Below 1 Ω
      E42-3 (RR-) - E27-3 (RI-) Below 1 Ω
      E42-1 (RR+) or E27-4 (RI+) - Body ground 10 kΩ or higher
      E42-3 (RR-) or E27-3 (RI-) - Body ground 10 kΩ or higher
    4. Reconnect the receiver connector.
    5. Reconnect the condenser connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go TO NEXT STEP 

  12. CHECK HARNESS AND CONNECTOR (CONDENSER - ROOF SPEAKER) 
    1. Disconnect the E42 receiver connector.
    2. Disconnect the E27 condenser connector.
      Fig 6: Identifying Roof Speaker & Condenser Connector Terminals
      G05114061Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      E27-2 (LO+) - R4-1 Below 1 Ω
      E27-5 (LO-) - R4-2 Below 1 Ω
      E27-2 (LO+) or R4-1 - Body ground 10 kΩ or higher
      E27-5 (LO-) or R4-2 - Body ground 10 kΩ or higher
      E27-8 (RO+) - R5-1 Below 1 Ω
      E27-7 (RO-) - R5-2 Below 1 Ω
      E27-8 (RO+) or R5-1 - Body ground 10 kΩ or higher
      E27-7 (RO-) or R5-2 - Body ground 10 kΩ or higher
    4. Reconnect the receiver connector.
    5. Reconnect the condenser connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go TO NEXT STEP 

  13. REPLACE CONDENSER 
    1. Temporarily replace the condenser with a new or normally functioning one.
    2. Check that the sound is normal.

      OK: Sound is normal. 

    NG: END 

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

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