System Description

SYSTEM

DAYTIME RUNNING LIGHT SYSTEM : System Description


OUTLINE

- Turns the following exterior lamps ON as the daytime running light.
- Headlamp (LO)
- Parking, license plate, side marker and tail lamps.
- Daytime running light is controlled by daytime running light control function and combination switch reading function of BCM, and relay control function of IPDM E/R.

DAYTIME RUNNING LIGHT OPERATION

- BCM detects the combination switch condition by the combination switch reading function.
- BCM detects vehicle condition depending on the following signals.
- Parking brake switch signal (received from combination meter via CAN communication)
- BCM transmits the daytime running light request signal to IPDM E/R via CAN communication according to the daytime running light ON condition.
- While the engine running with the parking brake released.
- Lighting switch is in the other positions than 2ND.
- IPDM E/R turns the integrated headlamp low relay and daytime running light relay ON according to the daytime running light request signal. And it turns each lamps ON.