Dynamic Rear Proportioning (DRP)

WARNING: This page is about a different car, the 2004 Ford RV Cutaway, 2004 Ford Econoline, 2004 Ford E450 Super Duty, and 2004 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Vehicles with four wheel disc brakes are equipped with dynamic rear proportioning (DRP). The DRP system is integral to the ABS module. The DRP maintains brake balance and maximizes brake efficiency for all loading configurations. DRP detects the onset of front versus rear slip imbalance and limits the rear pressure. If the rear slip significantly exceeds the front slip, the DRP system will reduce the rear pressure. If this condition occurs, the driver will feel a slight pulsation in the brake pedal. The DRP system will be disabled if diagnostic trouble code (DTC) C1226 is set or if a DTC is set from condition 1 and condition 2 or condition 3, or if one DTC from condition 2 and condition 3, or if two or more DTCs are set from condition 1.

Condition one:

C1095
C1196
C1200
C1212
C1216

Condition two:

C1155
C1158
C1233

Condition three:

C1145
C1148
C1234

If any DTCs are retrieved, GO to INSPECTION AND VERIFICATION .