OUTLINE
Each illumination lamp is controlled by each function of BCM, IPDM E/R and combination meter.
Control by BCM
Combination switch reading function
Headlamp control function
Control by IPDM E/R
Relay control function
Control by combination meter
Meter illumination control function (Refer to
System Diagram
.)
ILLUMINATION CONTROL
BCM detects the combination switch condition by the combination switch reading function.
BCM transmits position light request signal to IPDM E/R and combination meter according to tail lamp ON condition.
Tail lamp ON condition
Lighting switch 1ST
Lighting switch 2ND
IPDM E/R turns the integrated tail lamp relay ON according to position light request signal. It provides the power supply to each illumination lamp.
Combination meter enters in the nighttime mode according to position light request signal. Under the nighttime mode the combination meter controls the illuminance by controlling the each illumination lamp (ground side).