Test E: DTC C1785: Electronic Parking Brake (EPB) Motor Output Open Circuit

PINPOINT TEST E: DTC C1785: ELECTRONIC PARKING BRAKE (EPB) MOTOR OUTPUT OPEN CIRCUIT

E1:

E2-E3:

Normal Operation
The electronic parking brake (EPB) 2-way motor receives power from circuit 32-CG19 (WH/VT) or 33-CG19 (YE/VT), depending on the direction of the motor revolution. When the EPB is applied, circuit 32-CG19 (WH/VT) is equal to the battery voltage and circuit 33-CG19 (YE/VT) is equal to 0 volts. When the EPB is released, 32-CR19 (YE/VT) is equal to 0 volts and 33-CT19 (YE/VT) is equal to the battery voltage. Otherwise, both circuits are at one half of the battery voltage.

Possible Causes
- circuit 32-CG19 (WH/VT) open
- circuit 33-CG19 (YE/VT) open
- EPB actuator
- EPB module