Operating Light Control Rheostat does not Change Light Brightness [11/2015 -]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Data List.
5. Read the Data List according to the display on the Techstream.

   Body Electrical > Combination Meter > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Light Control Up Switch	Light control rheostat up switch	OFF or ON	OFF: Switch released ON: Switch pressed	-
   Light Control Down Switch	Light control rheostat down switch	OFF or ON	OFF: Switch released ON: Switch pressed	-

   Body Electrical > Combination Meter > Data List 

   Tester Display
   Light Control Up Switch
   Light Control Down Switch

   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 (METER CIRCUIT PLATE). Refer to  DISASSEMBLY [11/2015 -] 

Result: 

NG 

See step  2

1. Remove the light control rheostat switch (combination switch assembly).

   Refer to REMOVAL [11/2015 -]

2. Inspect the light control rheostat switch (combination switch assembly).

   Refer to INSPECTION [11/2015 -]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE LIGHT CONTROL RHEOSTAT SWITCH (COMBINATION SWITCH ASSEMBLY). Refer to  REMOVAL [11/2015 -] 

Result: 

OK 

See step  3

1. Disconnect the F6 combination meter assembly (meter circuit plate) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F6-24 (TR) - F12-8 (RV)	Always	Below 1 Ω
   F12-6 (E) - Body ground	Always	Below 1 Ω
   F6-24 (TR) or F12-8 (RV) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY (METER CIRCUIT PLATE). Refer to  DISASSEMBLY [11/2015 -] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR