Inspection Procedure

1. Operate the Techstream according to the display and select "Data List".

   OK: Switch condition (ON/OFF) can be switched by actual operation. 

   Combination Meter: 

   MEASUREMENT ITEM/RANGE TABLE
   
   

   Item	Measurement Item / Range (Display)	Normal Condition	Diagnostic Note
   Light Control Up Switch	Light control rheostat (UP) switch / ON or OFF	ON: Light control rheostat (UP) switch pushed OFF: Light control rheostat (UP) switch not pushed	-
   Light Control Down Switch	Light control rheostat (DOWN) switch / ON or OFF	ON: Light control rheostat (DOWN) switch pushed OFF: Light control rheostat (DOWN) switch not pushed	-

NG: Go to step   2 

OK: REPLACE NO. 1 METER ECU  (See DISASSEMBLY  )

1. Remove the rheostat (see REMOVAL  ).
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   STANDARD RESISTANCE TABLE
   
   

   Tester Connection	Switch Condition	Specified Condition
   3 (UP) - 5 (E)	UP switch Is pushed	Below 1 Ω
   	UP switch Is not pushed	10 kΩ or higher
   7 (DOWN) - 5 (E)	DOWN switch pushed	Below 1 Ω
   	DOWN switch Is not pushed	10 kΩ or higher

   Fig 1: Identifying L8 Rheostat Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE LIGHT CONTROL RHEOSTAT  (See REMOVAL  )

OK: Go to next step 

1. Disconnect the L10 ECU connector.
2. Disconnect the L8 rheostat connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   STANDARD RESISTANCE TABLE
   
   

   Tester Connection	Condition	Specified Condition
   L10-8 (RHUP) - L8-3 (UP)	Always	Below 1 Ω
   L10-7 (RHDW) - L8-7 (DOWN)
   L8-5 (E) - Body ground
   L10-8 (RHUP) or L8-3 (UP) - Body ground	Always	10 kΩ or higher
   L10-7 (RHDW) or L8-7 (DOWN) - Body ground

   Fig 2: Identifying L10 ECU Connector & L8 Rheostat Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE NO. 1 METER ECU  (See DISASSEMBLY  )