Display does not Dim when Light Control Switch is Turned ON [08/2015 - 08/2020]: Procedure

1. Display the "Display" screen.
2. Turn the light control switch to the tail or head position.
3. Check if "Day Mode" on the display adjustment screen is on.
   RESULT
   
   

   Result	Proceed to
   "Day Mode" setting is on.	A
   "Day Mode" setting is off.	B

Result: 

A 

TURN "Day Mode" SETTING OFF 

Result: 

B 

See step  2

1. Enter the "Vehicle Signal Check Mode" screen. [Refer to Check Vehicle Signal in Operation Check (Refer to OPERATION CHECK [08/2015 - 08/2021] )]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Check that the display for "TAIL" changes between ON and OFF according to the headlight dimmer switch Assembly operation.

   OK

   Headlight Dimmer Switch Assembly	Display
   Tail or head	ON
   Off	OFF

   HINT: 

   This display is updated once per second. As a result, it is normal for the display to lag behind the actual switch operation.

3. Check that the display for "ADIM/TCAN" changes between DIM and BRIGHT according to the light control switch operation.

   OK

   Headlight Dimmer Switch Assembly	Display
   Tail or head	DIM
   Off	BRIGHT

Result: 

OK 

REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY 

(Refer to REMOVAL [08/2015 - 08/2021] )

Result: 

NG 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] , or refer to PROBLEM SYMPTOMS TABLE [08/2019 - 08/2021] )