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Inspection Procedure

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

      Result 

      RESULT REFERENCE

      Result Proceed to
      DVD changer models A
      CD changer models B

    B:  Go to step  25

    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  15

    A: Go to next Step 

  3. CHECK SPEAKER 
    1. Check the malfunctioning speakers.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Front No. 4 speaker A
      Front No. 2 speaker B
      Front No. 1 speaker C
      Front No. 3 speaker D

    B:  Go to step  6

    C:  Go to step  11

    D:  Go to step  13

    A: Go to next Step 

  4. INSPECT FRONT NO. 4 SPEAKER ASSEMBLY 
    1. Disconnect the F6 speaker connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always 6.0+/-1.0Ω

    NG: REPLACE FRONT NO. 4 SPEAKER ASSEMBLY  (See REMOVAL  )

    Fig 1: Identifying F6 Speaker Connector Terminals
    G05630226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next Step 

  5. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 4 SPEAKER) 
    1. Disconnect the F6 speaker connector.
    2. Disconnect the F3 amplifier connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F3-3 (CTR+) - F6-1 Always Below 1 Ω
      F3-9 (CTR-) - F6-2 Always Below 1 Ω
      F3-3 (CTR+) - Body ground Always 10 kΩ or higher
      F3-9 (CTR-) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 2: Identifying F6 Speaker Connector & F3 Amplifier Connector Terminal
    G05630227Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY  (See REMOVAL  )

  6. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Disconnect the F8 and F7 speaker connectors.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always Below 1 Ω
      3-4 Always Below 1 Ω
      2-4 Always 6.0+/-1.0 Ω

    NG: REPLACE FRONT NO. 2 SPEAKER ASSEMBLY  (See REMOVAL  )

    Fig 3: Identifying F8 & F7 Speaker Connector Terminals
    G05630228Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    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

      Result Proceed to
      Defective speaker is on right side (w/ LEXUS Link System) A
      Defective speaker is on right side (w/o LEXUS Link System) B
      Defective speaker is on left side B

    B:  Go to step  10

    A: Go to next Step 

  8. CHECK HARNESS AND CONNECTOR (TELEPHONE ECU - STEREO COMPONENT AMPLIFIER AND FRONT NO. 2 SPEAKER) 
    1. Disconnect the F31 amplifier connector.
    2. Disconnect the F7 speaker connector.
    3. Disconnect the P2 ECU connector.
    4. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F7-1 (+) - P2-2 (SPO+) Always Below 1 Ω
      F7-3 (-) - P2-3 (SPO-)
      F31-8 (FR+) - P2-10 (SPI+)
      F31-7 (FR-) - P2-11 (SPI-)
      F7-1 (+) - Body ground Always 10 kΩ or higher
      F7-3 (-) - Body ground
      F31-8 (FR+) - Body ground
      F31-7 (FR-) - Body ground

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 4: Identifying F31 Amplifier Connector, F7 Speaker Connector And P2 ECU Connector Terminals
    G05762867Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next Step 

  9. CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY (OPERATION) 
    1. Replace the stereo component amplifier with a normal one and check that audio can be heard from the front RH side speaker (See REMOVAL  ).

      OK: Audio can be heard. 

    NG: REPLACE TELEPHONE ECU ASSEMBLY  (See REMOVAL )

    OK: END (STEREO COMPONENT AMPLIFIER IS DEFECTIVE) 

  10. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 2 SPEAKER) 
    1. Disconnect the F31 amplifier connector.
    2. Disconnect the F8 and F7 speaker connectors.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance: 

      for LH 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F31-2 (FL+) - F8-1 (+) Always Below 1 Ω
      F31-6 (FL-) - F8-3 (-) Always Below 1 Ω
      F31-2 (FL+) - Body ground Always 10 kΩ or higher
      F31-6 (FL-) - Body ground Always 10 kΩ or higher

      for RH 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      F31-8 (FR+) - F7-1 (+) Always Below 1 Ω
      F31-7 (FR-) - F7-3 (-) Always Below 1 Ω
      F31-8 (FR+) - Body ground Always 10 kΩ or higher
      F31-7 (FR-) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 5: Identifying F31 Amplifier Connector And F8, F7 Speaker Connectors Terminals
    G05762868Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY  (See REMOVAL  )

  11. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY 
    1. Disconnect the I10 and I1 speaker connectors.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always 1.9+/-0.4 Ω

    NG: REPLACE FRONT NO. 1 SPEAKER ASSEMBLY  (See REMOVAL  )

    Fig 6: Identifying I10 And I1 Speaker Connectors Terminals
    G05762792Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next Step 

  12. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 1 SPEAKER) 
    1. Disconnect the I10 and I1 speaker connectors.
    2. Disconnect the F4 amplifier connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance: 

      for LH 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F4-10 (WFL+) - I10-1 Always Below 1 Ω
      F4-8 (WFL-) - I10-2 Always Below 1 Ω
      F4-10 (WFL+) - Body ground Always 10 kΩ or higher
      F4-8 (WFL-) - Body ground Always 10 kΩ or higher

      for RH 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      F4-5 (WFR+) - l1-1 Always Below 1 Ω
      F4-11 (WFR-) - l1-2 Always Below 1 Ω
      F4-5 (WFR+) - Body ground Always 10 kΩ or higher
      F4-11 (WFR-) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 7: Identifying I10, I1 Speaker Connectors And F4 Amplifier Connector Terminals
    G05762870Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY  (See REMOVAL  )

  13. CHECK FRONT NO. 3 SPEAKER ASSEMBLY 
    1. Disconnect the F14 and F13 speaker connectors.
    2. Interchange the front No. 3 speaker LH with RH.
    3. Check that the malfunction disappears.

      OK: Malfunction disappears. 

      HINT:

      • Connect all the connectors to the front No. 3 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.
      • Perform the inspection above on both the LH and RH sides.

    NG: Go to step 14 

    OK: REPLACE FRONT NO. 3 SPEAKER ASSEMBLY  (See REMOVAL  )

  14. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Disconnect the F8 and F7 speaker connectors.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      2-4 Always 6.0+/-1.0 Ω

    NG: REPLACE FRONT NO. 2 SPEAKER ASSEMBLY  (See REMOVAL  )

    Fig 8: Identifying F8 And F7 Speaker Connectors Terminals
    G05762871Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT NO. 2 SPEAKER - FRONT NO. 3 SPEAKER) 

  15. CHECK SPEAKER 
    1. Check the malfunctioning speakers.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Rear No. 2 speaker A
      Rear No. 3 speaker B
      Rear speaker set C
      No 1 woofer box speaker D
      Rear header speaker E

    B:  Go to step  17

    C:  Go to step  19

    D:  Go to step  21

    E:  Go to step  23

    A: Go to next Step 

  16. INSPECT REAR NO. 2 SPEAKER ASSEMBLY 
    1. Disconnect the rear No. 2 speaker connectors.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always 6.0+/-1.0 Ω

    NG: REPLACE REAR NO. 2 SPEAKER ASSEMBLY  (See REMOVAL  )

    Fig 9: Identifying Rear No. 2 Speaker Connectors Terminals
    G05762800Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE REAR NO. 3 SPEAKER ASSEMBLY  (See REMOVAL  )

  17. CHECK REAR NO. 3 SPEAKER ASSEMBLY 
    1. Disconnect the rear No. 3 speaker connectors.
    2. Interchange the rear No. 3 speaker LH with RH.
    3. Check that the malfunction disappears.

      OK: Malfunction disappears. 

      HINT:

      • Connect all the connectors to the rear No. 3 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 the LH and RH sides.

    NG: Go to step 18 

    OK: REPLACE REAR NO. 3 SPEAKER ASSEMBLY  (See REMOVAL  )

  18. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - REAR NO. 3 SPEAKER) 
    1. Disconnect the F31 amplifier connector.
    2. Disconnect the J8 and J1 speaker connectors.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance: 

      for LH 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F31-3 (R-L+) - J8-1 (+) Always Below 1 Ω
      F31-9 (R-L-) - J8-2 (-) Always Below 1 Ω
      F31-3 (R-L+) - Body ground Always 10 kΩ or higher
      F31-9 (R-L-Body ground Always 10 kΩ or higher

      for RH 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      F31-4 (R-R+) - J1-1 (+) Always Below 1 Ω
      F31-10 (R-R-) - J1-2{-) Always Below 1 Ω
      F31-4 (R-R+) - Body ground Always 10 kΩ or higher
      F31-10 (R-R-) - Body ground Always 10 kΩ or higher
      Fig 10: Identifying F31 Amplifier Connector And J8, J1 Speaker Connectors Terminals
      G05762873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY  (See REMOVAL  )

  19. INSPECT REAR SPEAKER SET 
    1. Disconnect the J17 and J15 speaker connectors.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always 6.0+/-1.2 Ω

    NG: REPLACE REAR SPEAKER SET  (See REMOVAL  )

    Fig 11: Identifying J17 And J15 Speaker Connectors Terminals
    G05762809Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next Step 

  20. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - REAR SPEAKER SET) 
    1. Disconnect the F3 and F31 amplifier connectors.
    2. Disconnect the J17 and J15 speaker connectors.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance: 

      for LH 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F3-4 (RL+) - J17-1 Always Below 1 Ω
      F3-10 (RL-) - J17-2
      F3-4 (RL+) - Body ground Always 10 kΩ or higher
      F3-10 (RL-) - Body ground

      for RH 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      F31-1 (RR+) - J15-1 Always Below 1 Ω
      F31-5 (RR-) - J15-2
      F31-1 (RR+) - Body ground Always 10 kΩ or higher
      F31-5 (RR-) - Body ground

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 12: Identifying F3, F31 Amplifier Connectors And J17, J15 Speaker Connectors Terminals
    G05762875Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY  (See REMOVAL  )

  21. INSPECT NO. 1 WOOFER BOX SPEAKER ASSEMBLY 
    1. Disconnect the L4 speaker connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always 8.0 Ω

    NG: REPLACE NO. 1 WOOFER BOX SPEAKER ASSEMBLY  (See REMOVAL  )

    Fig 13: Identifying L4 Speaker Connector Terminals
    G05630236Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next Step 

  22. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - NO. 1 WOOFER BOX SPEAKER) 
    1. Disconnect the F3 amplifier connector.
    2. Disconnect the L4 speaker connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F3-1 (WF1+) - L4-1 (WF1+) Always Below 1 Ω
      F3-6 (WF1-) - L4-2 (WF1-) Always Below 1 Ω
      F3-1 (WF1+) - Body ground Always 10 kΩ or higher
      F3-6 (WF1-) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 14: Identifying F3 Amplifier Connector And L4 Speaker Connector
    G05762877Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY  (See REMOVAL  )

  23. INSPECT REAR HEADER SPEAKER ASSEMBLY 
    1. Disconnect the S9 and S8 speaker connectors.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always 6.0+/-1.0Ω

    NG: REPLACE REAR HEADER SPEAKER ASSEMBLY  (See INSPECTION  )

    Fig 15: Identifying S9 And S8 Speaker Connectors Terminals
    G05630238Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next Step 

  24. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - REAR HEADER SPEAKER) 
    1. Disconnect the F4 amplifier connector.
    2. Disconnect the S9 and S8 speaker connectors.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance: 

      for LH 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F4-2 (SL+) - S9-1 (RLD+) Always Below 1 Ω
      F4-7 (SL-) - S9-2 (RLD-) Always Below 1 Ω
      F4-2 (SL+) - Body ground Always 10 kΩ or higher
      F4-7 (SL-) - Body ground Always 10 kΩ or higher

      for RH 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      F4-1 (SR+) - S8-1 (RRD+) Always Below 1 Ω
      F4-6 (SR-) - S8-2 (RRD-) Always Below 1 Ω
      F4-1 (SR+) - Body ground Always 10 kΩ or higher
      F4-6 (SR-) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 16: Identifying F4 Amplifier Connector And S9, S8 Speaker Connectors Terminals
    G05762879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY  (See REMOVAL  )

    OK: AUDIO / VIDEO - AUDIO AND VISUAL SYSTEM 

  25. CHECK SPEAKER 
    1. Check the malfunctioning speakers.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Front No. 4 speaker A
      Front No. 2 speaker B
      Front No. 1 speaker C
      Front No. 3 speaker D
      Rear speaker set E

    B:  Go to step  28

    C:  Go to step  33

    D:  Go to step  35

    E:  Go to step  37

    A: Go to next Step 

  26. INSPECT FRONT NO. 4 SPEAKER ASSEMBLY 
    1. Disconnect the F6 speaker connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always 6 Ω

    NG: REPLACE FRONT NO. 4 SPEAKER ASSEMBLY  (See REMOVAL  )

    Fig 17: Identifying F6 Speaker Connector Terminals
    G05630226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next Step 

  27. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 4 SPEAKER) 
    1. Disconnect the F6 speaker connector.
    2. Disconnect the F3 amplifier connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F3-3 (CTR+) - F6-1 Always Below 1 Ω
      F3-9 (CTR-) - F6-2 Always Below 1 Ω
      F3-3 (CTR+) - Body ground Always 10 kΩ or higher
      F3-9 (CTR-) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 18: Identifying F6 Speaker Connector And F3 Amplifier Connector Terminals
    G05762881Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY  (See REMOVAL  )

  28. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Disconnect the F8 and F7 speaker connectors.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always Below 1 Ω
      3-4 Always Below 1 Ω
      2-4 Always 4 Ω

    NG: REPLACE FRONT NO. 2 SPEAKER ASSEMBLY  (See REMOVAL  )

    Fig 19: Identifying F8 And F7 Speaker Connectors Terminals
    G05630228Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next Step 

  29. 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

      Result Proceed to
      Defective speaker is on right side (w/ LEXUS Link System) A
      Defective speaker is on right side (w/o LEXUS Link System) B
      Defective speaker is on left side B

    B:  Go to step  32

    A: Go to next Step 

  30. CHECK HARNESS AND CONNECTOR (TELEPHONE ECU - STEREO COMPONENT AMPLIFIER AND FRONT NO. 2 SPEAKER) 
    1. Disconnect the F31 amplifier connector.
    2. Disconnect the F7 speaker connector.
    3. Disconnect the P2 ECU connector.
    4. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F7-1 (+) - P2-2 (SPO+) Always Below 1 Ω
      F7-3 (-) - P2-3 (SPO-)
      F31-8 (FR+) - P2-10 (SPI+)
      F31-7 (FR-) - P2-11 (SPI-)
      F7-1 (+) - Body ground Always 10 kΩ or higher
      F7-3 (-) - Body ground
      F31-8 (FR+) - Body ground
      F31-7 (FR-) - Body ground

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 20: Identifying F31 Amplifier Connector, F7 Speaker Connector And P2 ECU Connector Terminals
    G05762883Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next Step 

  31. CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY 
    1. Replace the stereo component amplifier with a normal one and check that audio can be heard from the front RH side speaker (See REMOVAL  ).

      OK: Audio can be heard. 

    NG: REPLACE TELEPHONE ECU ASSEMBLY  (See REMOVAL )

    OK: END (STEREO COMPONENT AMPLIFIER IS DEFECTIVE) 

  32. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 2 SPEAKER) 
    1. Disconnect the F31 amplifier connector.
    2. Disconnect the F8 and F7 speaker connectors.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance: 

      for LH 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F31-2 (FL+) - F8-1 (+) Always Below 1 Ω
      F31-6 (FL-) - F8-3 (-) Always Below 1 Ω
      F31-2 (FL+) - Body ground Always 10 kΩ or higher
      F31-6 (FL-) - Body ground Always 10 kΩ or higher

      for RH 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      F31-8 (FR+) - F7-1 (+) Always Below 1 Ω
      F31-7 (FR-) - F7-3 (-) Always Below 1 Ω
      F31-8 (FR+) - Body ground Always 10 kΩ or higher
      F31-7 (FR-) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 21: Identifying F31 Amplifier Connector And F8, F7 Speaker Connectors Terminals
    G05762884Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY  (See REMOVAL  )

  33. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY 
    1. Disconnect the I10 and I1 speaker connectors.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always 3 Ω

    NG: REPLACE FRONT NO. 1 SPEAKER ASSEMBLY  (See REMOVAL  )

    Fig 22: Identifying I10 And I1 Speaker Connectors Terminals
    G05762792Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next Step 

  34. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO. 1 SPEAKER) 
    1. Disconnect the I10 and I1 speaker connectors.
    2. Disconnect the F31 and F3 amplifier connectors.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance: 

      for LH 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F3-4 (WFL+) - I10-1 Always Below 1 Ω
      F3-10 (WFL-) - I10-2 Always Below 1 Ω
      F3-4 (WFL+) - Body ground Always 10 kΩ or higher
      F3-10 (WFL-) - Body ground Always 10 kΩ or higher

      for RH 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      F31-1 (WFR+) - l1-1 Always Below 1 Ω
      F31-5 (WFR-) - I1-2 Always Below 1 Ω
      F31-1 (WFR+) - Body ground Always 10 kΩ or higher
      F31-5 (WFR-) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 23: Identifying I10, I1 Speaker Connectors And F31, F3 Amplifier Connectors Terminals
    G05762886Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY  (See REMOVAL  )

  35. INSPECT FRONT NO. 3 SPEAKER ASSEMBLY 
    1. Disconnect the F14 and F13 speaker connectors.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always 4 Ω

    NG: REPLACE FRONT NO. 3 SPEAKER ASSEMBLY  (See REMOVAL  )

    Fig 24: Identifying F14 And F13 Speaker Connectors Terminals
    G05762811Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next Step 

  36. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY 
    1. Disconnect the F8 and F7 speaker connectors.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always Below 1 Ω
      3-4 Always Below 1 Ω
      2-4 Always 4 Ω

    NG: REPLACE FRONT NO. 2 SPEAKER ASSEMBLY  (See REMOVAL  )

    Fig 25: Identifying F8 And F7 Speaker Connectors Terminals
    G05630232Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT NO. 2 SPEAKER - FRONT NO. 3 SPEAKER) 

  37. INSPECT REAR SPEAKER SET 
    1. Disconnect the J17 and J15 speaker connectors.
    2. Measure the resistance according to the value (s) in the table below.
      Fig 26: Identifying J17 And J15 Speaker Connectors Terminals
      G05762809Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1-2 Always 4 Ω

    NG: REPLACE REAR SPEAKER SET  (See REMOVAL  )

    OK: Go to next Step 

  38. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - REAR SPEAKER SET) 
    1. Disconnect the F31 amplifier connector.
    2. Disconnect the J17 and J15 speaker connectors.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance: 

      for LH 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      F31-3 (RL+) - J17-1 (+) Always Below 1 Ω
      F31-9 (RL-) - J17-2 (-) Always Below 1 Ω
      F31-3 (RL+) - Body ground Always 10 kΩ or higher
      F31-9 (RL-) - Body ground Always 10 kΩ or higher

      for RH 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      F31-4 (RR+) - J15-1 (+) Always Below 1 Ω
      F31-10 (RR-) - J15-2 (-) Always Below 1 Ω
      F31-4 (RR+) - Body ground Always 10 kΩ or higher
      F31-10 (RR-) - Body ground Always 10 kΩ or higher
      4. Fig 27: Identifying F31 Amplifier Connector And J17, J15 Speaker Connectors Terminals
      G05762890Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY  (See REMOVAL  )

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