Operating Light Control Rheostat does not Change Light Brightness [11/2021 - ]: Procedure

1. Perform the Active Test according to the display on the GTS.

   Body Electrical > Combination Meter > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Light Control Switch (UP)	Performs the same operation as pressing the light control rheostat up switch	OFF/ON	-
   Light Control Switch (DOWN)	Performs the same operation as pressing the light control rheostat down switch	OFF/ON	-

   Body Electrical > Combination Meter > Active Test 

   Tester Display
   Light Control Switch (UP)

   Body Electrical > Combination Meter > Active Test 

   Tester Display
   Light Control Switch (DOWN)

   Result

   Result	Proceed to
   Active Test can be performed correctly	A
   Active Test cannot be performed correctly	B

Result: 

B 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

Result: 

A 

See step  2

1. Read the Data List according to the display on the GTS.

   Body Electrical > Combination Meter > Data List 

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

   Body Electrical > Combination Meter > Data List 

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

   Result

   Result	Proceed to
   The value of the Data List item is correct, and the combination meter assembly operates correctly	A
   The value of the Data List item is correct, but the combination meter assembly does not operate correctly	B
   The Data List item changes correctly	C

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ] 

Result: 

B 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

Result: 

C 

See step  3

Refer to INSPECTION [11/2021 - ]

Result

Result: 

NG 

REPLACE TRIP SWITCH. Refer to  REMOVAL [11/2021 - ] 

Result: 

OK 

See step  4

1. Disconnect the D22 combination meter assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D81-5 (RV) - D22-28 (TR)	Always	Below 1 Ω
   D81-7 (E) - D22-26 (SW3)	Always	Below 1 Ω
   D81-5 (RV) or D22-28 (TR) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR