C0110
DTC C0110
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptor
DTC C0110 00
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Pump Motor Circuit
Diagnostic Fault Information
Circuit/System Description
Battery positive voltage is supplied to the electronic brake control module (EBCM) at all times through a 40 A fuse located in the underhood fuse block. The EBCM uses this voltage to power the pump motor. The pump motor is an integral part of the brake pressure modulator valve, while the pump motor relay is integral to the EBCM. The pump motor relay is not engaged during normal system operation. When the antilock brake system, the traction control system or the stability operation is required the EBCM activates the pump motor relay and turns the pump motor ON.
Conditions for Running the DTC
* Ignition ON.
* The vehicle speed is greater than 16 km/h (10 mph).
Conditions for Setting the DTC
* The EBCM detects the pump motor runs continuously.
* The EBCM detects the pump motor is binding or stalled.
* The EBCM detects an open/high resistance on the ground circuit.
* The EBCM detects a short to ground or an open/high resistance on the B+ circuit.
Action Taken When the DTC Sets
* The ABS indicator turns ON.
* The stability control-active indicator turns ON.
* The traction control/stability control-active indicator off turns ON.
* An ABS Fault and Stability Fault message is displayed on the driver information center.
* The EBCM disables the antilock brake system, the traction control system and the electronic stability program for the duration of the ignition cycle.
Conditions for Clearing the DTC
* The condition for the DTC is no longer present.
* The history DTC will clear after 40 consecutive fault-free drive cycles have occurred.
* Operate the vehicle at speeds greater than 15 km/h (10 mph) to complete the self test, and the EBCM will turn off the ABS indicator.
Reference Information
Schematic Reference
Antilock Brake System Schematics [1][2]Antilock Brakes / Traction Control Systems
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly
Description and Operation
ABS Description and Operation Description and Operation
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
Ignition ON, command the ABS Motor ON and OFF with a scan tool. The pump motor should turn ON and OFF when changing between the commanded states.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 10 ohms between each ground circuit terminal listed below and ground:
* Terminal 13
* Terminal 38
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminals listed below and ground:
* Terminal 1
* Terminal 25
• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, replace the brake pressure modulator valve assembly and verify that the DTC did not reset.
• If the DTC resets, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Brake Pressure Modulator Valve Assembly Replacement Service and Repair
* Control Module References Control Module References for EBCM replacement, programming and setup