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
- Lighting switch AUTO, and the auto light function ON judgement (with auto light system)
- Lighting switch AUTO with the rear fog lamp switch ON and ignition switch ON (with auto light system)

- 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 and any of the following

- Lighting switch 2ND
- Lighting switch AUTO, and the auto light function on judgement (with auto light system)
- Lighting switch AUTO with the rear fog lamp switch ON and ignition switch ON (with auto light system)

- 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.