C0110

DTC C0110

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.



DTC Descriptor
DTC C0110 00
- Pump Motor Circuit Malfunction

DTC C0110 04
- Pump Motor Circuit Actuator Open

DTC C0110 07
- Pump Motor Circuit Voltage Above Threshold

DTC C0110 59
- Pump Motor Circuit Component Protection Time-out

DTC C0110 61
- Pump Motor Circuit Actuator Stuck




Diagnostic Fault Information






Circuit/System Description

The pump motor is an integral part of the brake pressure modulator valve (BPMV), while the pump motor relay is integral to the electronic brake control module (EBCM). The pump motor relay is not engaged during normal system operation. When antilock brake system (ABS) or traction control system (TCS) operation is required the EBCM activates the pump motor relay and ground circuit is provided to the pump motor.


Conditions for Running the DTC

* The ignition switch is in the ON position.
* Initialization is complete.



Conditions for Setting the DTC

* The EBCM motor drive circuit detects a short to battery positive, or open ground circuit, and a continuously on or off motor.
* 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

* The EBCM disables the ABS/TCS/VSES for the duration of the ignition cycle.
* The ABS indicator turns ON.
* The Traction Control and VSES indicators turn ON.
* The Traction Control and Stabilitrack displayed on the DIC.



Conditions for Clearing the DTC

* The condition for the DTC is no longer present.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.



Reference Information
Schematic Reference

Antilock Brake System Schematics ([1][2]Antilock Brakes / Traction Control Systems)
Connector End View Reference

Component Connector End Views
Description and Operation

ABS Description and Operation (w/JL4) (ABS Description and Operation (With RPO JL4))ABS Description and Operation (without JL4) (ABS Description and Operation (Without RPO JL4))
Electrical Information Reference

* Circuit Testing
* Connector Repairs
* Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs

Scan Tool Reference

Control Module References for Scan Tool Information


Circuit/System Testing

1. Ignition OFF, disconnect the EBCM harness connector and connect a test lamp between the battery positive voltage circuit terminal going to the ABS pump motor, and to ground.
2. Ignition ON, verify that the test lamp illuminates.

• If the test lamp does not illuminate, repair the open or high resistance in the battery positive voltage circuit.

3. Connect a test lamp between the battery positive voltage circuit and pump motor ground circuit at the EBCM connector, verify that the test lamp illuminates.

• If the test lamp does not illuminate, repair the open or high resistance in the pump motor ground circuit.

4. Ignition OFF, remove the EBCM from the BPMV.
5. Inspect the EBCM to BPMV connector for conditions such as damage, corrosion, or presence of brake fluid.

• If connector corrosion or damage is evident, replace BPMV and/or EBCM as necessary.
• If brake fluid is present, replace both BPMV and EBCM.

6. Connect the EBCM harness to the EBCM with the BPMV still separated.
7. Connect a test lamp between the pump motor circuits, internal EBCM side.
8. Ignition ON, use the scan tool to perform the Pump Motor Test refer to Brake Pressure Modulator Valve Hydraulic Testing (Component Tests and General Diagnostics) .

• If test lamp illuminates replace the BPMV.
• If test lamp does not illuminate replace the EBCM.




Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

* Brake Pressure Modulator Valve Replacement (w/JL4) (Service and Repair)Brake Pressure Modulator Valve Replacement (w/o JL4) (Service and Repair)
* Control Module References for EBCM replacement, setup, and programming