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Inspection Procedure

  1. CHECK AUDIO MODELS 
    1. Check the audio model.

      Result 

      RESULT REFERENCE

      Model Proceed to
      CD changer models A
      DVD changer models B

    B:  Go to step  20

    A: Go to Next Step 

  2. CHECK SPEAKER 
    1. Check the malfunctioning speakers.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Malfunction in front speaker area A
      Malfunction In rear speaker area B

    B:  Go to step  13

    A: Go to Next Step 

  3. CHECK SPEAKER 
    1. Check the malfunctioning speakers.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Front stereo component speaker A
      Front No. 2 speaker B
      Front No. 1 speaker C

    B:  Go to step  6

    C:  Go to step  11

    A: Go to Next Step 

  4. INSPECT FRONT STEREO COMPONENT SPEAKER 
    1. Disconnect the L2 speaker connector.
    2. Measure the resistance of the speaker.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      1 - 2 Approx. 10 Ω
      3. Fig 1: Identifying L2 Speaker Connector Terminals
      G05819671Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE FRONT STEREO COMPONENT SPEAKER 

    OK: Go to Next Step 

  5. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - FRONT STEREO COMPONENT SPEAKER) 
    1. Disconnect the L2 speaker connector.
    2. Disconnect the U44 amplifier connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      U44-3 (CTR+) - L2-1 Below 1 Ω
      U44-9 (CTR-) - L2-2 Below 1 Ω
      U44-3 (CTR+) - Body ground 10 kΩ or higher
      U44-9 (CTR-) - Body ground 10 kΩ or higher
      4. Fig 2: Identifying L2 Speaker And U44 Amplifier Connector Terminals
      G05819672Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER 

  6. INSPECT FRONT NO. 2 SPEAKER 
    1. Disconnect the K23 and K62 speaker connectors.
    2. Measure the resistance of the speaker.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      K23-1 (TWL+) - K23-2 (TWL-) Approx. 4 Ω
      K62-1 (TWR+) - K62-2 (TWR-) Approx. 4 Ω
      3. Fig 3: Identifying K23 And K62 Speaker Connector Terminals
      G05819673Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE FRONT NO. 2 SPEAKER 

    OK: Go to Next Step 

  7. CHECK DEFECTIVE SPEAKER AND VEHICLE EQUIPMENT 
    1. Check which side of the vehicle the defective speaker is on. Also, check if the vehicle is equipped with the LEXUS Link System.

      Result 

      RESULT REFERENCE

      Defective speaker location Specified Condition
      Defective speaker is on right side (with LEXUS Link System) A
      Defective speaker is on right side (without LEXUS Link System) B
      Defective speaker is on left side (with LEXUS Link System) B

    B:  Go to step  10

    A: Go to Next Step 

  8. CHECK WIRE HARNESS (MAYDAY ECU - STEREO COMPONENT AMPLIFIER AND FRONT NO. 2 SPEAKER) 
    1. Disconnect the 1130 amplifier connector.
    2. Disconnect the K62 speaker connector.
    3. Disconnect the U45 ECU connector.
    4. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      K62-1 (TWR+) - U45-2 (SPO+) Below 1 Ω
      K62-2 (TWR-) - U45-3 (SPO-) Below 1 Ω
      U30-8 (FR+) - U45-10 (SPI+) Below 1 Ω
      U30-7 (FR-) - U45-11 (SPI-) Below 1 Ω
      K62-1 (TWR+) - Body ground 10 kΩ or higher
      K62-2 (TWR-) - Body ground 10 kΩ or higher
      U30-8 (FR+) - Body ground 10 kΩ or higher
      U30-7 (FR-) - Body ground 10 kΩ or higher
      5. Fig 4: Identifying U30 Amplifier, K62 Speaker And U45 ECU Connector Terminals
      G05819674Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  9. CHECK STEREO COMPONENT AMPLIFIER (OPERATION) 
    1. After replacing the stereo component amplifier with a normal one, check that audio sound can be heard from the front RH side speaker.

      OK: Audio sound can be heard. 

    NG: REPLACE MAYDAY ECU 

    OK: END (STEREO COMPONENT AMPLIFIER IS DEFECTIVE) 

  10. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - FRONT NO. 2 SPEAKER) 
    1. Disconnect the U30 amplifier connector.
    2. Disconnect the K23 and K62 speaker connectors.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      U30-2 (FL+) - K23-1 (TWL+) Below 1 Ω
      U30-6 (FL-) - K23-2 (TWL-) Below 1 Ω
      U30-8 (FR+) - K62-1 (TWR+) Below 1 Ω
      U30-7 (FR-) - K62-2 (TWR-) Below 1 Ω
      U30-2 (FL+) - Body ground 10 kΩ or higher
      U30-6 (FL-) - Body ground 10 kΩ or higher
      U30-8 (FR+) - Body ground 10 kΩ or higher
      U30-7 (FR-) - Body ground 10 kΩ or higher
      4. Fig 5: Identifying U30 Amplifier With K23 And K62 Speaker Connector Terminals
      G05819675Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER 

  11. INSPECT FRONT NO. 1 SPEAKER 
    1. Disconnect the M7 and M1 speaker connectors.
    2. Measure the resistance of the speaker.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      1 - 2 Approx. 4 Ω
      3. Fig 6: Identifying M7 And M1 Speaker Connector Terminals
      G05819676Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE FRONT NO. 1 SPEAKER 

    OK: Go to Next Step 

  12. CHECK WIRE HARNESS (FRONT NO. 2 SPEAKER - FRONT NO. 1 SPEAKER) 
    1. Disconnect the K23, K62, M7 and M1 speaker connectors.
    2. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      K23-3 (+) - M7-1 Below 1 Ω
      K23-4 (-) - M7-2 Below 1 Ω
      K62-3 (+) - M1-1 Below 1 Ω
      K62-4 (-) - M1-2 Below 1 Ω
      3. Fig 7: Identifying K23, K62, M7 And M1 Speaker Connector Terminals
      G05819677Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE FRONT NO. 2 SPEAKER 

  13. CHECK SPEAKER 
    1. Check the malfunctioning speakers.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Rear No. 2 speaker A
      Rear No. 1 speaker B
      Stereo component speaker C

    B:  Go to step  16

    C:  Go to step  18

    A: Go to Next Step 

  14. INSPECT REAR NO. 2 SPEAKER 
    1. Disconnect the S8 and S4 speaker connectors.
    2. Measure the resistance of the speaker.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      1 (+TW) - 2 (-TW) Approx. 4 Ω
      3. Fig 8: Identifying S8 And S4 Speaker Connector Terminals
      G05819678Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE REAR NO. 2 SPEAKER 

    OK: Go to Next Step 

  15. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - REAR NO. 2 SPEAKER) 
    1. Disconnect the U30 amplifier connector.
    2. Disconnect the S8 and S4 speaker connectors.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      U30-3 (RL+) - S8-1 (+TW) Below 1 Ω
      U30-9 (RL-) - S8-2 (-TW) Below 1 Ω
      U30-4 (RR+) - S4-1 (+TW) Below 1 Ω
      U30-10 (RR-) - S4-2 (-TW) Below 1 Ω
      U30-3 (RL+) - Body ground 10 kΩ or higher
      U30-9 (RL-) - Body ground 10 kΩ or higher
      U30-4 (RR+) - Body ground 10 kΩ or higher
      U30-10 (RR-) - Body ground 10 kΩ or higher
      4. Fig 9: Identifying U30 Amplifier With S8 And S4 Speaker Connector Terminals
      G05819679Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER 

  16. INSPECT REAR NO. 1 SPEAKER 
    1. Disconnect the O1 and O6 speaker connectors.
    2. Measure the resistance of the speaker.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      1 - 2 Approx. 4 Ω
      3. Fig 10: Identifying O1 And O6 Speaker Connector Terminals
      G05819680Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE REAR NO. 1 SPEAKER 

    OK: Go to Next Step 

  17. CHECK WIRE HARNESS (REAR NO. 2 SPEAKER - REAR NO. 1 SPEAKER) 
    1. Disconnect the S8, S4, O1 and O6 speaker connectors.
    2. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      S8-3 (+) - O6-1 Below 1 Ω
      S8-4 (-) - O6-2 Below 1 Ω
      S4-3 (+) - O1-1 Below 1 Ω
      S4-4 (-) - O1-2 Below 1 Ω
      3. Fig 11: Identifying S8, S4, O1 And O6 Speaker Connector Terminals
      G05819681Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE REAR NO. 2 SPEAKER 

  18. INSPECT STEREO COMPONENT SPEAKER 
    1. Disconnect the U21 speaker connector.
    2. Measure the resistance of the speaker.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      1 (WF2-) - 2 (WF2+) Approx. 2.5 Ω
      3 (WF1-) - 4 (WF1+)
      3. Fig 12: Identifying U21 Speaker Connector Terminals
      G05819682Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE STEREO COMPONENT SPEAKER 

    OK: Go to Next Step 

  19. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - STEREO COMPONENT SPEAKER) 
    1. Disconnect the U44 amplifier connector.
    2. Disconnect the U21 speaker connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      U44-1 (WF1+) - U21-4 (WF1+) Below 1 Ω
      U44-5 (WF1-) - U21-3 (WF1-) Below 1 Ω
      U44-2 (WF2+) - U21-2 (WF2+) Below 1 Ω
      U44-6 (WF2-) - U21-1 (WF2-) Below 1 Ω
      U44-1 (WF1+) - Body ground 10 kΩ or higher
      U44-5 (WF1-) - Body ground 10 kΩ or higher
      U44-2 (WF2+) - Body ground 10 kΩ or higher
      U44-6 (WF2-) - Body ground 10 kΩ or higher
      4. Fig 13: Identifying U44 Amplifier And U21 Speaker Connector Terminals
      G05819683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER 

  20. CHECK SPEAKER 
    1. Check the malfunctioning speakers.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Malfunction in front speaker area A
      Malfunction in rear speaker area B

    B:  Go to step  31

    A: Go to Next Step 

  21. CHECK SPEAKER 
    1. Check the malfunctioning speakers.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Front stereo component speaker A
      Front No. 2 speaker B
      Front No. 1 speaker C

    B:  Go to step  24

    C:  Go to step  29

    A: Go to Next Step 

  22. INSPECT FRONT STEREO COMPONENT SPEAKER 
    1. Disconnect the L2 speaker connector.
    2. Measure the resistance of the speaker.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      1 - 2 7 to 9 Ω
      3. Fig 14: Identifying L2 Speaker Connector Terminals
      G05819684Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE FRONT STEREO COMPONENT SPEAKER 

    OK: Go to Next Step 

  23. CHECK SPEAKER (STEREO COMPONENT AMPLIFIER - FRONT STEREO COMPONENT SPEAKER) 
    1. Disconnect the L2 speaker connector.
    2. Disconnect the U31 amplifier connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      U31-3 (CTR+) - L2-1 Below 1 Ω
      U31-12 (CTR-) - L2-2 Below 1 Ω
      U31-3 (CTR+) - Body ground 10 kΩ or higher
      U31-12 (CTR-) - Body ground 10 kΩ or higher
      4. Fig 15: Identifying L2 Speaker And U31 Amplifier Connector Terminals
      G05819685Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER 

  24. INSPECT FRONT NO. 2 SPEAKER 
    1. Disconnect the K23 and K62 speaker connectors.
    2. Measure the resistance of the speaker.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      K23-1 (TWL+) - K23-2 (TWL-) 6 to 10 Ω
      K62-1 (TWR+) - K62-2 (TWR-) 6 to 10 Ω
      3. Fig 16: Identifying K23 And K62 Speaker Connector Terminals
      G05819686Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE FRONT NO. 2 SPEAKER 

    OK: Go to Next Step 

  25. CHECK DEFECTIVE SPEAKER AND VEHICLE EQUIPMENT 
    1. Check which side of the vehicle the defective speaker is on. Also, check if the vehicle is equipped with the LEXUS Link System.

      Result 

      RESULT REFERENCE

      Defective speaker location Specified Condition
      Defective speaker is on right side (with LEXUS Link System) A
      Defective speaker is on right side (without LEXUS Link System) B
      Defective speaker is on left side (with LEXUS Link System) B

    B:  Go to step  28

    A: Go to Next Step 

  26. CHECK WIRE HARNESS (MAYDAY ECU - STEREO COMPONENT AMPLIFIER AND FRONT NO. 2 SPEAKER) 
    1. Disconnect the U31 amplifier connector.
    2. Disconnect the K62 speaker connector.
    3. Disconnect the U45 ECU connector.
    4. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      K62-1 (TWR+) - U45-2 (SPO+) Below 1 Ω
      K62-2 (TWR-) - U45-3 (SPO-) Below 1 Ω
      U31-9 (FR+) - U45-10 (SPI+) Below 1 Ω
      U31-20 (FR-) - U45-11 (SPI-) Below 1 Ω
      K62-1 (TWR+) - Body ground 10 kΩ or higher
      K62-2 (TWR-) - Body ground 10 kΩ or higher
      U31-9 (FR+) - Body ground 10 kΩ or higher
      U31-20 (FR-) - Body ground 10 kΩ or higher
      5. Fig 17: Identifying U31 Amplifier, K62 Speaker And U45 ECU Connector Terminals
      G05819687Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  27. CHECK STEREO COMPONENT AMPLIFIER (OPERATION) 
    1. After replacing the stereo component amplifier with a normal one, check that audio sound can be heard from the front RH side speaker.

      OK: Audio sound can be heard. 

    NG: REPLACE MAYDAY ECU 

    OK: END (STEREO COMPONENT AMPLIFIER IS DEFECTIVE) 

  28. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - FRONT NO. 2 SPEAKER) 
    1. Disconnect the U31 amplifier connector.
    2. Disconnect the K23 and K62 speaker connectors.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      U31-8 (FL+) - K23-1 (TWL+) Below 1 Ω
      U31-19 (FL-) - K23-2 (TWL-) Below 1 Ω
      U31-9 (FR+) - K62-1 (TWR+) Below 1 Ω
      U31-20 (FR-) - K62-2 (TWR-) Below 1 Ω
      U31-8 (FL+) - Body ground 10 kΩ or higher
      U31-19 (FL-) - Body ground 10 kΩ or higher
      U31-9 (FR+) - Body ground 10 kΩ or higher
      U31-20 (FR-) - Body ground 10 kΩ or higher
      4. Fig 18: Identifying U31 Amplifier With K23 And K62 Speaker Connector Terminals
      G05819688Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER 

  29. INSPECT FRONT NO. 1 SPEAKER 
    1. Disconnect the M8 and M2 speaker connectors.
    2. Measure the resistance of the speaker.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      1 - 2 6 to 10 Ω
      3. Fig 19: Identifying M8 And M2 Speaker Connector Terminals
      G05819689Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE FRONT NO. 1 SPEAKER 

    OK: Go to Next Step 

  30. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - FRONT NO. 1 SPEAKER) 
    1. Disconnect the U30 amplifier connector.
    2. Disconnect the M8 and M2 speaker connectors.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      U30-3 (WFL+) - M8-1 Below 1 Ω
      U30-9 (WFL-) - M8-2 Below 1 Ω
      U30-4 (WFR+) - M2-1 Below 1 Ω
      U30-10 (WFR-) - M2-2 Below 1 Ω
      U30-3 (WFL+) - Body ground 10 kΩ or higher
      U30-9 (WFL-) - Body ground 10 kΩ or higher
      U30-4 (WFR+) - Body ground 10 kΩ or higher
      U30-10 (WFR-) - Body ground 10 kΩ or higher
      4. Fig 20: Identifying U30 Amplifier With M8 And M2 Speaker Connector Terminals
      G05819690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER 

  31. CHECK SPEAKER 
    1. Check the malfunctioning speakers.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Rear No. 2 speaker A
      Rear No. 1 speaker B
      Rear header speaker C
      Stereo component speaker D

    B:  Go to step  34

    C:  Go to step  36

    D:  Go to step  38

    A: Go to Next Step 

  32. INSPECT REAR NO. 2 SPEAKER 
    1. Check that the malfunction disappears when the speaker is replaced with a normal one.

      OK: Malfunction disappears. 

      HINT:

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

    OK: REPLACE REAR NO. 2 SPEAKER 

    NG: Go to Next Step 

  33. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - REAR NO. 2 SPEAKER) 
    1. Disconnect the U31 amplifier connector.
    2. Disconnect the S8 and S4 speaker connectors.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      U31-6 (RL+) - S8-1 (+TW) Below 1 Ω
      U31-17 (RL-) - S8-2 (-TW) Below 1 Ω
      U31-7 (RR+) - S4-1 (+TW) Below 1 Ω
      U31-18 (RR-) - S4-2 (-TW) Below 1 Ω
      U31-6 (RL+) - Body ground 10 kΩ or higher
      U31-17 (RL-) - Body ground 10 kΩ or higher
      U31-7 (RR+) - Body ground 10 kΩ or higher
      U31-18 (RR-) - Body ground 10 kΩ or higher
      4. Fig 21: Identifying U31 Amplifier With S8 And S4 Speaker Connector Terminals
      G05819691Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER 

  34. INSPECT REAR NO. 1 SPEAKER 
    1. Disconnect the O6 and O1 speaker connectors.
    2. Measure the resistance of the speaker.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      1 - 2 6 to 10 Ω
      3. Fig 22: Identifying O6 And O1 Speaker Connector Terminals
      G05819692Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE REAR NO. 1 SPEAKER 

    OK: Go to Next Step 

  35. CHECK WIRE HARNESS (REAR NO. 2 SPEAKER - REAR NO. 1 SPEAKER) 
    1. Disconnect the O6, O1, S4 speaker connectors.
    2. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      S8-3 (+) - O6-1 Below 1 Ω
      S8-4 (-) - O6-2 Below 1 Ω
      S4-3 (+) - O1-1 Below 1 Ω
      S4-4 (-) - O1-2 Below 1 Ω
      3. Fig 23: Identifying O6, O1, S8 And S4 Speaker Connector Terminals
      G05819693Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE REAR NO. 2 SPEAKER 

  36. INSPECT REAR HEADER SPEAKER 
    1. Disconnect the V21 and U17 speaker connectors.
    2. Measure the resistance of the speaker.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      1 - 2 7 to 9 Ω
      3. Fig 24: Identifying Rear Header Speaker Connector Terminals
      G05819694Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE REAR HEADER SPEAKER 

    OK: Go to Next Step 

  37. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - REAR HEADER SPEAKER) 
    1. Disconnect the U30 amplifier connector.
    2. Disconnect the V21 and U17 speaker connectors.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      U30-1 (SL+) - V21-1 Below 1 Ω
      U30-5 (SL-) - V21-2 Below 1 Ω
      U30-2 (SR+) - U17-1 Below 1 Ω
      U30-6 (SR-) - U17-2 Below 1 Ω
      U30-1 (SL+) - Body ground 10 kΩ or higher
      U30-5 (SL-) - Body ground 10 kΩ or higher
      U30-2 (SR+) - Body ground 10 kΩ or higher
      U30-6 (SR-) - Body ground 10 kΩ or higher
      4. Fig 25: Identifying U30 Amplifier With V21 And U17 Speaker Connector Terminals
      G05819695Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER 

  38. INSPECT STEREO COMPONENT SPEAKER 
    1. Disconnect the U21 speaker connector.
    2. Measure the resistance of the speaker.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      2 (WF2+) - 4 (WF1+) 12.5 to 16.5 Ω
      3. Fig 26: Identifying U21 Speaker Connector Terminals
      G05819696Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE STEREO COMPONENT SPEAKER 

    OK: Go to Next Step 

  39. CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - STEREO COMPONENT SPEAKER) 
    1. Disconnect the U31 amplifier connector.
    2. Disconnect the U21 speaker connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      U31-5 (WF1+) - U21-4 (WF1+) Below 1 Ω
      U31-4 (WF2+) - U21-2 (WF2+) Below 1 Ω
      U31-5 (WF1+) - Body ground 10 kΩ or higher
      U31-4 (WF2+) - Body ground 10 kΩ or higher
      4. Fig 27: Identifying U31 Amplifier And U21 Speaker Connector Terminals
      G05819697Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER 

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