Touch Panel Switch does not Function: Procedure

CHECK TOUCH PANEL
1. Check for foreign matter on the display.
  OK
  
  The display is clean.
NG → CLEAN DISPLAY AND RECHECK TOUCH PANEL

OK: Go to next step
CHECK TOUCH SWITCH (DISPLAY CHECK MODE)

Fig 1: Diagnostic Tool Display - Touch Switch Check
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1. Enter the "Display Check" mode (Touch Switch Check). Refer to OPERATION CHECK .
2. Touch the display in the area where the switch malfunction occurs.
  OK
  
  A "+" mark appears at the touched position.
NG → See step 3

OK → See step 4
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE
REPLACE NAVIGATION RECEIVER ASSEMBLY. Refer to REMOVAL