Circuit Description

Dynamic Rear Proportioning (DRP) is a control system that replaces the hydraulic proportioning function of the mechanical proportioning valve in the base brake system. DRP control system is part of operating software in EBCM. DRP uses active control with existing ABS in order to regulate vehicle's rear brake pressure.

DTC sets when DTC C1254, C1255, C1265 or C1267 sets, DTC C1236 sets and system voltage is less than 8.5 volts, or 2 wheel speed sensor DTCs on same axle set.