C0018

DTC C0018 Pump Motor Short to Battery or Motor Ground Open / High Resistance






Circuit Description
The pump motor is contained within the Brake Pressure Modulator Valve (BPMV). The pump motor ground is supplied though terminal D of the EBCM.

Conditions for Setting the DTC
C0018 can only be set with the key in the ON position, pump motor is commanded on, and the EBCM detected a short to power or high resistance in the pump ground circuit.

Action Taken When the DTC Sets
^ The solenoid relay opens, removing power from the pump motor and solenoids.
^ DTC C0018 is stored.
^ ABS disabled, ABS Warning Lamp turns on.

Conditions for Clearing the DTC
^ If the conditions that set DTC C0018 are no longer present, the DTC may be cleared by using the proper scan tool.
^ The DTC that has not occurred in 100 drive cycles will be deleted from history data.

Diagnostic Aids
Typical causes of DTC C0018.
1. Poor terminal contact at terminal D.
2. Terminal D ground circuit shorted to voltage.
3. Terminal D ground circuit open.
4. Terminal D ground circuit high resistance to ground.

Steps 1-12:

Step 13:

5. Faulty EBCM.