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Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  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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