Circuit Operation

WARNING: This page is about a different variant/trim than selected.

When the parking brake switch is turned ON, the combination meter terminal No. 4 is grounded, and then the brake warning light is illuminated.
When the brake fluid level drop is detected, the brake fluid level switch is turned from ON to OFF. ETACS-ECU monitors the brake fluid level switch, and gives an instruction via the CAN bus line to the combination meter to illuminate the brake warning light.