Diesel Data: Automotive Repair

Headlight

System Outline

Daytime Running Light Operation
When the engine is started, a signal from the generator is input into TERMINAL (D) 5 of the main body ECU. At this time, if the parking brake pedal is depressed (Parking brake SW ON), the main body ECU is not activated, and the daytime running light system does not operate.

When the parking brake pedal or parking lever is released (Parking brake SW OFF), a signal is input into TERMINAL 19 of the main body ECU. This activates the main body ECU and the headlight turns on.