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Visual Mute Signal Circuit between Radio Receiver and Multi-display: Procedure

  1. INSPECT MULTI-DISPLAY ASSEMBLY 
    1. Measure the voltage according to the value(s) in the table below.
      GTY399533Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection Condition Specified Condition
      G41-11 (VMTI) - Body ground Engine switch on (ACC), screen display changes. 2 V or higher
      → Below 1 V
      → 2 V or higher
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Multi-display Assembly)

    NG → See step   2 

    OK → See step   4 

  2. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - MULTI-DISPLAY ASSEMBLY) 
    1. Disconnect the G41 multi-display assembly connector.
    2. Disconnect the G40 radio receiver assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G40-5 (VMTF) - G41-11 (VMTI) Always Below 1 Ω
      G40-5 (VMTF) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  3. REPLACE MULTI-DISPLAY ASSEMBLY 
    1. Replace the multi-display assembly. Refer to REMOVAL [03/2012 - 07/2012] .
    2. Check that the screen display is normal.

      OK

      Screen display is normal.

    NG → See step   5 

    OK → END 

  4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [03/2012 - 07/2012] 
  5. REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [03/2012 - 07/2012]