Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to the ON position.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Data List.
5. Check the values by referring to the values in the table below.

   Combination Meter: 

   MEASUREMENT ITEM/RANGE CHART
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Rheostat value	Light control rheostat / Min.: 0, Max.: 255	Light control rheostat switch is Dark (0%) → Bright (100%)	-

   OK: Light brightness can be changed within the specified range by actual operation. 

NG: Go to step 2 

OK: REPLACE COMBINATION METER ASSEMBLY 

1. Remove the light control rheostat with connector still connected.
2. Measure the resistance according to the value (s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   R6-1 (E) - R6-7 (RV)	Rheostat knob is in the MAX. position	8 to 12 kΩ
   R6-1 (E) - R6-7 (RV)	Rheostat knob is in the MIN. position.	Approx. 0 Ω

Fig 1: Identifying Light Control Rheostat Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE LIGHT CONTROL RHEOSTAT 

OK: Go to next step. 

1. Disconnect the C9 and R6 connectors.
2. Measure the resistance according to the value (s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   C9-13 (RE) - R6-1 (E)	Always	Below 1 Ω
   C9-14 (TR) - R6-7 (RV)	Always	Below 1 Ω
   R6-7 (RV) - Body ground	Always	10 kΩ or higher
   R6-1 (E) - Body ground	Always	Below 1 Ω

Fig 2: Identifying C9 And R6 Connectors Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE COMBINATION METER ASSEMBLY