Light Control Switch Circuit: Procedure
WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
- READ VALUE USING TECHSTREAM
- Connect the Techstream to the DLC3.
- Turn the ignition switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Combination Switch / Data List.
- Read the display on the Techstream.COMBINATION SWITCH (COMBINATION SWITCH ECU)
Tester Display Measurement Item/Range Normal Condition Diagnostic Note Front Fog Light Switch Front fog light switch signal / ON or OFF ON: Front fog light switch is in ON position
OFF: Front fog light switch is not in ON position- Passing Light Switch Passing light switch signal / ON or OFF ON: Headlight dimmer switch is in FLASH (PASS) position
OFF: Headlight dimmer switch is not in FLASH (PASS) position- Dimmer HI Switch High beam switch signal / ON or OFF ON: Headlight dimmer switch is in HI position
OFF: Headlight dimmer switch is in LOW position- Light Auto Switch Auto light switch signal / ON or OFF ON: Light control switch is in AUTO position
OFF: Light control switch is not in AUTO position- Head Light Switch Headlight control switch signal / ON or OFF ON: Light control switch is in HEAD position
OFF: Light control switch is not in HEAD position- Tail Light Switch Taillight switch signal / ON or OFF ON: Light control switch is in TAIL or HEAD position
OFF: Light control switch is off- Turn Left Switch Turn signal switch LH signal / ON or OFF ON: Turn signal switch is in LH position
OFF: Turn signal switch is not in LH position- Turn Right Switch Turn signal switch RH signal / ON or OFF ON: Turn signal switch is in RH position
OFF: Turn signal switch is not in RH position- OK
Condition information can be displayed.
NG → See step 2
OK → PROCEED TO PROBLEM SYMPTOMS TABLE NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
- INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY
- Inspect headlight dimmer switch assembly. Refer to INSPECTION
.
OK
Headlight dimmer switch assembly is normal.
NG → REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY
OK → PROCEED TO PROBLEM SYMPTOMS TABLE NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
- Inspect headlight dimmer switch assembly. Refer to INSPECTION
.