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Home >> Kia >> 2012 >> Optima Hybrid >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Active Hydraulic Booster (AHB) System Diagnosis - HEV >> DTC C2402: Motor Electrical >> General Information >> General Description

General Information: General Description

The AHB ECU(Electronic Control Unit) supplies battery power to the electric motor by way of a motor relay which is controlled by the Electronic Control Unit(ECU).

The electric motor pump supplies hydraulic pressure to all wheel brake calipers by operating the piston inside the pump.