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Inspection Procedure

  1. CHECK TOUCH SWITCH (DISPLAY CHECK MODE) 
    1. Check the touch switch (Display Check Mode) (see DTC CHECK/CLEAR  ).
    • NG: REPLACE MULTI-DISPLAY 
    • OK: GO TO NEXT STEP 
  2. CHECK AVC-LAN CIRCUIT 
    1. See AVC-LAN CIRCUIT  .
    • NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    • OK: GO TO NEXT STEP 
  3. CHECK TOUCH PANEL SWITCH 
    1. Check each touch panel switch.

      Result: 

      TOUCH PANEL SWITCH

      Result Proceed to
      All switches do not operate A
      Navigation system switches do not operate B
      Air conditioning system switches do not operate C
      • A: REPLACE MULTI-DISPLAY 
      • B: REPLACE NAVIGATION ECU 
      • C: GO TO NEXT STEP 
  4. CHECK WIRE HARNESS (GATEWAY ECU - AIR CONDITIONING AMPLIFIER ASSEMBLY) 
    • NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    • OK: REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY 
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