C0110
DTC C0110
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 C0110 Pump Motor 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
C0110 04
* The system and ignition voltage is between 10.5-17 volts.
* The system enable relay is ON.
* The pump motor has been commanded OFF for 2.5 seconds.
C0110 07
* The system and ignition voltage is between 10.5-17 volts.
* The system enable relay is ON.
C0110 61
* DTC C0110 04 or 07 are not set.
* The system enable relay is ON.
* The pump motor has been commanded ON for 0.3 seconds.
Conditions for Setting the DTC
C0110 04
The EBCM detects an open in the pump motor circuit when the voltage across the pump motor is between 10 and 90 percent of ignition voltage.
C0110 07
This code sets for a open in the pump motor driver circuit when the pump is commanded on and the following conditions exist.
* The voltage across the pump is less than 8 volts.
* The voltage at the high side of the motor is greater than 9.25 volts.
* The EBCM detects a open in the low side pump motor driver circuit.
C0110 61
The pump motor continues to rotate briefly after activation creating a feedback voltage. The EBCM sets the code if the measured feedback voltage indicates a binding or stalled pump motor.
Action Taken When the DTC Sets
If equipped, the following actions occur:
* The EBCM disables the ABS/Traction Control System (TCS)/Vehicle Stability Enhancement System (VSES) for the duration of the ignition cycle.
* The dynamic rear proportion (DRP) is degraded.
* The ABS indicator turns ON.
* The stability OFF indicator turns ON.
* The traction OFF indicator turns ON.
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. This step 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.
