FUNCTION OF MAIN COMPONENTS
| Component | Function | |
|---|---|---|
| Main Body ECU (Multiplex Network Body ECU) | Receives various signals and illuminates the daytime running lights. | |
| No. 1 Daytime Running Light Relay | Supplies power to the daytime running lights. | |
| Headlight Dimmer Switch Assembly | Light Control Switch | Outputs a light control signal and transmits it to the main body ECU (multiplex network body ECU). |
| ECM | Outputs an engine speed signal and transmits it to the main body ECU (multiplex network body ECU). | |
| Parking Brake Switch Assembly | Outputs a parking brake operation signal to the main body ECU (multiplex network body ECU). | |
SYSTEM CONTROL
The daytime running lights illuminate when all of the following conditions are met:
The ignition switch is ON.
An engine speed signal is input (engine running).
The headlight dimmer switch assembly is in the off or auto position (and the taillights are not turned on via the automatic light control system).
The parking brake is off.