Operating Light Control Rheostat does not Change Light Brightness [07/2015 - ]: Procedure
- READ VALUE USING TECHSTREAM (LIGHT CONTROL UP SWITCH, LIGHT CONTROL DOWN SWITCH)
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Combination Meter / Data List.
- Read the Data List according to the display on the Techstream.COMBINATION METER
Tester Display Measurement Item/Range Normal Condition Diagnostic Note Light Control Up Switch Light control rheostat up switch/OFF or ON OFF: Light control rheostat up switch not pressed - ON: Light control rheostat up switch pressed Light Control Down Switch Light control rheostat down switch/OFF or ON OFF: Light control rheostat down switch not pressed - ON: Light control rheostat down switch pressed OK
The value displayed on the Techstream changes with the actual light control rheostat switch operation.
Result: OK
OK
REPLACE COMBINATION METER ASSEMBLY
Refer to REMOVAL [07/2015 - ]
Result: NG
NG
See step 2
- INSPECT TRIP SWITCH
- Remove the trip switch. Refer to REMOVAL [07/2015 - ]
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition 3 (IG) - 5 (E) Light control rheostat up switch pressed Below 1 Ω Light control rheostat up switch not pressed 10 kΩ or higher Light control rheostat down switch pressed Below 1 Ω Light control rheostat down switch not pressed 10 kΩ or higher TEXT IN ILLUSTRATION*a Component without harness connected
(Trip Switch)
Result: NG
NG
REPLACE TRIP SWITCH
Refer to REMOVAL [07/2015 - ]
Result: OK
OK
See step 3
- Remove the trip switch. Refer to REMOVAL [07/2015 - ]
- CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - TRIP SWITCH)
- Disconnect the H14 combination meter assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition H14-25 (TR) - H64-3 (IG) Always Below 1 Ω H14-26 (SW3) - H64-5 (E) Always Below 1 Ω H14-25 (TR) - Body ground Always 10 kΩ or higher H14-26 (SW3) - Body ground Always 10 kΩ or higher
Result: OK
OK
REPLACE COMBINATION METER ASSEMBLY
Refer to REMOVAL [07/2015 - ]
Result: NG
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR