OUTLINE
Turns the headlamp high ON (high beam at approximately half illumination) as the daytime running light.
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 the engine condition by the engine status signal received from ECM with CAN communication.
BCM detects the parking brake condition by the parking brake switch signal received from combination meter with CAN communication.
BCM transmits the daytime running light request signal to IPDM E/R with CAN communication according to the daytime running light ON condition.
Daytime running light ON condition
Engine running
Lighting switch OFF or 1ST
Parking brake switch OFF
Ignition switch ON
IPDM E/R controls the daytime running light relay (ground-side) to turn ON according to the daytime running light request signal.
Power is supplied from the daytime running light relay through headlamp high (RH) and IPDM E/R to headlamp high (LH). And high beam headlamps are illuminated (approximately half illumination) as the daytime running light.