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.