Inspection Procedure

1. Enter the display adjustment screen by pressing the "DISPLAY" switch.
2. Turn the light control switch to the TAIL position.
3. Check if "DAY MODE" on the display adjustment is ON.

   OK: "DAY MODE" is ON. 

Fig 1: Radio Display Setting - Day Mode
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 2 

OK: TURN "DAY MODE" SETTING OFF 

1. Enter the "Display Check" mode (Vehicle Signal Check) (See DISPLAY CHECK MODE  ).
2. Check that the display changes between ON and OFF according to the light control switch operation.

   OK 

   LIGHT CONTROL SWITCH
   
   

   Light Control Switch	Display
   TAIL or ON	ON
   OFF	OFF

   HINT:

   The display is updated once per second. It is normal for the display to lag behind the actual switch operation.

Fig 2: Diagnostic Tool Display - Display Check Mode
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

OK: REPLACE NAVIGATION RECEIVER ASSEMBLY