Operating Light Control Rheostat does not Change Light Brightness [10/2023 - ]: Procedure

1. Using the Techstream, read the Data List.

   Refer to DATA LIST / ACTIVE TEST [10/2023 - ]

   Body Electrical > Combination Meter > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Light Control Switch (UP)	Light control rheostat up switch (Trip switch)	OFF/ON	OFF: Switch released ON: Switch pushed	-
   Light Control Switch (DOWN)	Light control rheostat down switch (Trip switch)	OFF/ON	OFF: Switch released ON: Switch pushed	-

   Body Electrical > Combination Meter > Data List 

   Tester Display
   Light Control Switch (UP)
   Light Control Switch (DOWN)

   OK

   Light control rheostat up or down switch condition displayed on the Techstream changes with the actual switch operation.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [10/2023 - ] 

Result: 

NG 

See step  2

1. *1: w/ Front LiDAR Sensor
2. *2: w/o Front LiDAR Sensor

1. Disconnect the G161*1 or G208*2 combination meter assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   W/ FRONT LIDAR SENSOR
   
   

   Tester Connection	Condition	Specified Condition
   G161-11 (TR) - G8-5 (RV)	Always	Below 1 Ω
   G161-28 (SW3) - G8-7 (E)	Always	Below 1 Ω
   G161-11 (TR) or G8-5 (RV) - Other terminals and body ground	Always	10 kΩ or higher
   G161-28 (SW3) or G8-7 (E) - Other terminals and body ground	Always	10 kΩ or higher

   W/O FRONT LIDAR SENSOR
   
   

   Tester Connection	Condition	Specified Condition
   G208-28 (TR) - G8-5 (RV)	Always	Below 1 Ω
   G208-26 (SW3) - G8-7 (E)	Always	Below 1 Ω
   G208-28 (TR) or G8-5 (RV) - Other terminals and body ground	Always	10 kΩ or higher
   G208-26 (SW3) or G8-7 (E) - Other terminals and body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Remove the trip switch (light control rheostat).

   Refer to REMOVAL [10/2023 - ]

2. Inspect the trip switch (light control rheostat).

   Refer to INSPECTION [10/2017 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [10/2023 - ] 

Result: 

NG 

REPLACE TRIP SWITCH (LIGHT CONTROL RHEOSTAT). Refer to  REMOVAL [10/2023 - ]