Inspection Procedure
- READ VALUE USING TECHSTREAM (LIGHT CONTROL RHEOSTAT)
- Operate the Techstream according to the display and select "Data List".
OK:
Switch condition (ON/OFF) can be switched by actual operation.
Combination Meter:
COMBINATION METER REFERENCE CHARTItem 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 )
- Operate the Techstream according to the display and select "Data List".
- INSPECT LIGHT CONTROL RHEOSTAT
- Remove the rheostat (See REMOVAL ).
- Measure the resistance according to the value (s) in the table below.
Standard resistance
STANDARD RESISTANCE REFERENCE CHARTTester 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) - S (E) DOWN switch pushed Below 1 Ω DOWN switch is not pushed 10 kΩ or higher NG: REPLACE LIGHT CONTROL RHEOSTAT (See REMOVAL )
OK: Go to Next Step
- CHECK HARNESS AND CONNECTOR (NO. 1 METER ECU - LIGHT CONTROL RHEOSTAT AND BODY GROUND)
- Disconnect the L10 ECU connector.
- Disconnect the L8 rheostat connector.
- Measure the resistance according to the value (s) in the table below.
Standard resistance
STANDARD RESISTANCE REFERENCE CHARTTester 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 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE NO. 1 METER ECU (See DISASSEMBLY )