OUTLINE

Headlamp is controlled by combination switch reading function and headlamp control function of BCM, and relay control function of IPDM E/R.
 
 HEADLAMP (LO) OPERATION

  • BCM detects the combination switch condition with the combination switch reading function.
  • BCM transmits the low beam request signal to IPDM E/R with CAN communication according to the headlamp (LO) ON condition.

  • Headlamp (LO) ON condition
    • Lighting switch 2ND
  • IPDM E/R turns the integrated headlamp low relay ON, and turns the headlamp ON according to the low beam request signal.
 
 HEADLAMP (HI) OPERATION

  • BCM transmits the high beam request signal to IPDM E/R and the combination meter with CAN communication according to the headlamp (HI) ON condition.

  • Headlamp (HI) ON condition
    • Lighting switch HI with the lighting switch 2ND
    • Lighting switch PASS
  • Combination meter turns the high beam indicator lamp ON according to the high beam request signal.
  • IPDM E/R turns the integrated headlamp high relay ON, and turns the headlamp ON according to the high beam request signal.