DDRP (De-Coupled Dynamic Rear Proportioning) Description: Notes

DDRP (De-coupled Dynamic Rear Proportioning) is proportioning system to maintain vehicle stability during braking. In normal braking condition, equal wheel speed should be maintained for efficient and balanced braking. In hard braking condition, a vehicle requires relatively less brake force at rear wheel due to vehicle's weight transfer to the front. DDRP maintains desired brake pressure to the rear wheel by using the ABS rear inlet and outlet valve in order to provide efficient braking and vehicle stability. In DDRP system, Power to the Rear Hold Valve Solenoid is provided from Ignition. If the following fault conditions are existing, The Red Brake Warning Lamp will be illuminated.

• 2 Wheel Speed Sensors inoperative on same axle.
• Rear inlet solenoid inoperative.
• Battery 2 (Motor Input) short to ground.
• Battery 1 (EBCM Input) open or short to the ground.
• Motor ground open or short to battery.
• EBCM ground open or short to battery.
• Ignition open or short to ground.