Inspection Procedure

HINT:

Start the inspection from step  1 when using the intelligent tester and start from step  2 when not using the intelligent tester.

1. READ VALUE OF INTELLIGENT TESTER 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch to the ON position.
   3. Turn the tester ON.
   4. Enter the following menus: DIAGNOSIS / OBD/MOBD / METER / DATA LIST.
   5. Check the values by referring to the table below.

      METER: 

      METER SPECIFICATION
      
      

      Item	Measurement Item/Range (Display)	Normal Condition	Diagnostic Note
      RHEOSTAT VOL	Light control rheostat/Min.: 0, Max.: 255	Light control rheostat switch is Dark (0) → Bright (255)	-

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

   NG: Go to step 2 

   OK: REPLACE COMBINATION METER ASSEMBLY 

2. INSPECT LIGHT CONTROL RHEOSTAT 
   1. Remove the light control rheostat.
   2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE CHART
      
      

      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) - R6-6 (TC)	Always	8 to 12 kΩ
      R6-1 (E) - R6-7 (RV)	Rheostat knob is in the MIN. position.	Approx. 0 Ω
      R6-5 (T) - R6-6 (TC)	Rheostat knob is in the MAX. position.	Approx. 0 Ω
      R6-5 (T) - R6-6 (TC)	Rheostat knob is in the MIN. position.	10 kΩ or higher

      Fig 1: Identifying ODO/TRIP Switch Connector Terminal

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE LIGHT CONTROL RHEOSTAT 

   OK: Go to Next Step 

3. CHECK HARNESS AND CONNECTOR (COMBINATION METER - LIGHT CONTROL RHEOSTAT) 
   1. Disconnect the C9 and R6 connectors.
   2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE CHART
      
      

      Tester Connection	Condition	Specified Condition
      C9-13 (RE) - R6-1 (E)	Always	Below 1 Ω
      C9-14 (RV) - R6-7 (RV)	Always	Below 1 Ω
      C9-15 (RL) - R6-6 (TC)	Always	Below 1 Ω
      C9-16 (TCAN SW) - R6-5 (T)	Always	Below 1 Ω
      R6-1 (E) - Body ground	Always	10 kΩ or higher
      R6-5 (T) - Body ground	Always	10 kΩ or higher
      R6-6 (TC) - Body ground	Always	10 kΩ or higher
      R6-7 (RV) - Body ground	Always	10 kΩ or higher

      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