Panel Switches do not Function: Procedure

CHECK PANEL SWITCH
1. Check for foreign matter around the switches that might prevent operation.
  OK
  
  No foreign matter is found.
NG → REMOVE ANY FOREIGN MATTER FOUND

OK: Go to next step
CHECK PANEL SWITCH (OPERATION CHECK)

Fig 1: Identifying Panel & Steering Switch Check Mode Screen Display
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Enter the "Panel & Steering Switch Check Mode" screen. Refer to Check Panel & Steering Switch in Operation Check. Refer to OPERATION CHECK .
2. Operate the abnormal switch and check if the switch status is correctly displayed.
  OK
  
  The switch status is correctly displayed as operated.
NG → See step 3

OK → See step 4
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to REMOVAL