FixVault
Home › Toyota › 2006 › Avalon Limited › Repair and Diagnosis › External Pages › Different car › Section 44 (Navigation) › Navigation System › Navigation Voice Speaker Circuit › Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK VEHICLE TYPE 
    1. Choose type to be inspected.
      VEHICLE TYPE

      Type Proceed to
      Coupe A
      Convertible B

    B: Go to step   8 

    A: GO TO NEXT STEP 

  2. INSPECT SYSTEM 
    1. Check the system.
      1. Check if sound is heard from speakers.
        PROBLEM SYMPTOM

        Symptom Proceed to
        No sound is heard from front No.1 speaker assembly A
        No sound is heard from front No.2 speaker assembly B
        No sound is heard from both speakers C

    B: Go to step   5 

    C: Go to step   7 

    A: GO TO NEXT STEP 

  3. INSPECT FRONT NO.1 SPEAKER ASSEMBLY 
    1. Disconnect the speaker connector.
    2. Resistance check
      1. Measure the resistance between the terminals of the speaker.
        NOTE: The speaker should not be removed for checking.

        Standard resistance: 

        3 to 4 Ω 

    NG: REPLACE FRONT NO.1 SPEAKER ASSEMBLY 

    OK: GO TO NEXT STEP 

  4. CHECK HARNESS AND CONNECTOR (FRONT NO.1 SPEAKER - STEREO COMPARTMENT AMPLIFIER) 
    1. Disconnect the stereo component amplifier assembly connector S10.
      Fig 1: Identifying Stereo Component Amplifier Assembly Connector S10
      G04387730Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      F6-1 - FL+ Always Below 1 Ω
      F6-2 - FL- Always Below 1 Ω
      F6-1 - Body ground Always 10 kΩ or higher
      F6-2 - Body ground Always 10 kΩ or higher
      Fig 2: Identifying Front No 1 Speaker Connector
      G04387731Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY 

  5. INSPECT FRONT NO.2 SPEAKER ASSEMBLY 
    1. Inspect by changing the right one with the left one, and vice versa.

      OK: Malfunction disappears. 

      HINT:

      Connect all connectors of the speakers.

    OK: REPLACE FRONT NO.2 SPEAKER ASSEMBLY 

    NG: GO TO NEXT STEP 

  6. CHECK HARNESS AND CONNECTOR (STEREO COMPARTMENT AMPLIFIER - FRONT NO.2 SPEAKER) 
    1. Disconnect the connectors from the stereo component amplifier assembly S10 and front No.2 speaker assembly T7.
      Fig 3: Identifying Connectors From Stereo Component Amplifier Assembly S10
      G04387732Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      T7-1 - TWL+ Always Below 1 Ω
      T7-2 - TWL- Always Below 1 Ω
      T7-1 - Body ground Always 10 kΩ or higher
      T7-2 - Body ground Always 10 kΩ or higher
      Fig 4: Identifying Front No 2 Speaker Assembly T7 Connector
      G04387733Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY 

  7. CHECK HARNESS AND CONNECTOR (RADIO AND NAVIGATION ASSEMBLY - STEREO COMPONENT AMPLIFIER) 
    1. Disconnect the connectors from the radio and navigation assembly R6 and stereo component amplifier assembly S11.
      Fig 5: Identifying Connectors From Radio And Navigation Assembly R6 Connectors
      G04387734Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      IVO+/- INT+ Always Below 1 Ω
      IVO-/- INT- Always Below 1 Ω
      IVO+/- Body ground Always 10 kΩ or higher
      IVO-/- Body ground Always 10 kΩ or higher
      SLD1 - Body ground Always 10 kΩ or higher
      Fig 6: Identifying Stereo Component Amplifier Assembly S11 Connectors
      G04387735Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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

  8. INSPECT SYSTEM 
    1. Check the system.
      1. Check if sound is heard from speakers.
        PROBLEM SYMPTOM

        Symptom Proceed to
        No sound is heard from both speakers A
        No sound is heard from front No.1 speaker assembly B
        No sound is heard from front No.2 speaker assembly Replace front No.2 speaker assembly

    B: Go to step   11 

    A: GO TO NEXT STEP 

  9. CHECK HARNESS AND CONNECTOR (RADIO AND NAVIGATION ASSEMBLY - STEREO COMPONENT AMPLIFIER) 
    1. Disconnect the connectors from the radio and navigation assembly R6 and stereo component amplifier assembly S11.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      IVO+/- INT+ Always Below 1 Ω
      IVO-/- INT- Always Below 1 Ω
      IVO+/- Body ground Always 10 kΩ or higher
      IVO-/- Body ground Always 10 kΩ or higher
      SLD1 - Body ground Always 10 kΩ or higher
      Fig 7: Identifying Radio And Navigation Assembly R6 Connectors
      G04387736Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 8: Identifying Stereo Component Amplifier Assembly S11 Connectors
      G04387737Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO TO NEXT STEP 

  10. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - FRONT NO.2 SPEAKER) 
    1. Disconnect the connectors from the stereo component amplifier assembly S10 and front No.2 speaker assembly T7.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      T7-1 - TWL+ Always Below 1 Ω
      T7-2 - TWL- Always Below 1 Ω
      T7-1 - Body ground Always 10 kΩ or higher
      T7-2 - Body ground Always 10 kΩ or higher
      Fig 9: Identifying Stereo Component Amplifier Assembly S10 Connectors
      G04387738Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 10: Identifying Front No 2 Speaker Assembly T7 Connector
      G04387739Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO TO NEXT STEP 

  11. INSPECT FRONT NO.2 SPEAKER ASSEMBLY 
    1. Inspect by changing the right one with the left one, and vice versa.

      OK: Malfunction disappears. 

      HINT:

      Connect all connectors of the speakers.

    OK: REPLACE FRONT NO.2 SPEAKER ASSEMBLY 

    NG: GO TO NEXT STEP 

  12. CHECK HARNESS AND CONNECTOR (FRONT NO.2 SPEAKER - FRONT NO.1 SPEAKER) 
    1. Disconnect the connectors from the front No.2 speaker assembly and front No.1 speaker assembly.
    2. Measure the resistance according to the values in the table below.

      Standard resistance 

      TERMINALS RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      3 (Front No.2 speaker assembly) - 1 (Front No.1 speaker Assembly) Always Below 1 Ω
      4 (Front No.2 speaker assembly) - 2 (Front No.1 speaker Assembly) Always Below 1 Ω
      3 (Front No.2 speaker assembly) - Body ground Always 10 kΩ or higher
      4 (Front No.2 speaker assembly) - Body ground Always 10 kΩ or higher
      Fig 11: Identifying Front No 1 And Front No 2 Speaker Assembly and front No.1 speaker assembly Connectors
      G04387740Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO TO NEXT STEP 

  13. INSPECT FRONT NO.1 SPEAKER ASSEMBLY 
    1. Disconnect the speaker connector.
    2. Resistance check
      1. Measure the resistance between the terminal of the speaker.
        NOTE: The speaker should not be removed for checking.

        Standard resistance: 

        3.5 to 4.5 Ω 

    NG: REPLACE FRONT NO.1 SPEAKER ASSEMBLY 

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

About FixVault