Test N
PINPOINT TEST N: C1989: PARK BRAKE APPLY AND RELEASE SWITCH CONTACTS ENERGIZED SIMULTANEOUSLYTests N1 - N2:
Normal Operation
The 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
^ 8-CG15 (WH/BU) short
^ 1 0-CG 15 (GY/VT) short
^ 9-CG20 (BN/WH) short
^ EPB switch
^ EPB module