Light Control Switch Circuit

Light Control Switch Circuit

DESCRIPTION

The combination switch ECU (windshield wiper switch assembly) receives the switch information.
- Light control switch position is Off, Tail, Head, or Auto
- Headlight dimmer switch position is High, Low, or Flash (Pass)
- Turn signal switch position is LH, RH or Off
- Fog light switch position is On or Off
The combination switch ECU then converts these signals to BEAN signals and sends them to each ECU via the multiplex communication system.
The headlight dimmer switch assembly includes the light control, headlight dimmer, turn signal, and fog light switches.

HINT: Before starting the procedure, check that the multiplex communication system DTCs are not output.

Wiring Diagram:

Step 1-2:

Step 2(continued):

Step 3:

INSPECTION PROCEDURE