C0116
DTC C0116
Circuit Description
The electronic brake control module (EBCM) supplies ground to activate the Antilock Brake System (ABS) pump motor. An internal system relay in the EBCM supplies battery positive voltage to the pump motor when the ignition is turned ON. The EBCM monitors pump motor feedback voltage after activation to detect a stalled or binding pump motor.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0116 Pump Motor Relay Circuit
This vehicle has DTCs which include DTC Symptoms. For more information on DTC Symptoms, refer to DTC Symptom Description .
Conditions for Running the DTC
* Ignition voltage is greater than 8 volts.
* The system enable relay is ON.
* The pump motor has been commanded ON.
Conditions for Setting the DTC
* Voltage across the pump terminals is less than 8 volts.
* Voltage on the positive terminal of the pump is less than 9.25 volts.
* The pump relay coil is not shorted to battery voltage or open.
Action Taken When the DTC Sets
* The EBCM disables the ABS system.
* The ABS indicator turns ON.
* Dynamic rear proportion (DRP) function is degraded.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.
Diagnostic Aids
The pump motor is integral to the brake pressure modulator valve (BPMV). The pump motor is not serviceable.
Test Description
The number below refers to the step number on the diagnostic table.
5. Tests the ability of the EBCM to control the pump motor. If the test lamp illuminates, the pump motor circuit within the EBCM is good.
