Meter Illumination is Always Dark [09/2020 - ]: Procedure

1. Check if CAN communication DTCs are output.

   Refer to DIAGNOSIS SYSTEM [09/2020 - 11/2021] , or refer to DIAGNOSIS SYSTEM [11/2021 - 10/2023] , or refer to DIAGNOSIS SYSTEM [10/2023 - ]

   Result

   Result	Proceed to
   CAN communication DTCs are not output	A
   CAN communication DTCs are output	B

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - ] 

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Data List.
5. Check the values by referring to the table below.

   Body Electrical > Main Body > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Light Sensor Illuminance	Light control sensor illuminance	0 to 8191 lx or SensorFail	Value is output according to ambient light level	The displayed value is "0" when no light is detected.

   Body Electrical > Main Body > Data List 

   Tester Display
   Light Sensor Illuminance

   Result

   Result	Proceed to
   The output value changes according to the ambient light level	A
   The output value does not change according to the ambient light level	B

Result: 

B 

CHECK CUSTOMIZE PARAMETER SETTING (SENSITIVITY). Refer to  CUSTOMIZE PARAMETERS [09/2020 - ] 

Result: 

A 

See step  3

1. Replace the main body ECU (multiplex network body ECU) with a new or known good one.

   Refer to REMOVAL [04/2013 - ]

   OK

   The operation of the combination meter assembly returns to normal.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [09/2020 - ]