C0111

DTC C0111-C0120

Diagnostic Instructions

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

DTC Descriptors
DTC C0111
- Pump Motor Circuit High

DTC C0113
- Pump Motor Circuit Open

DTC C0114
- Pump Motor Performance

DTC C0115
- Right Front Wheel Speed Sensor Circuit

DTC C0120
- Pump Motor Relay Circuit Open

Circuit Description

The electronic brake control module (EBCM) supplies B+ voltage to activate the pump motor within the brake pressure modulator valve (BPMV). The EBCM monitors pump motor feedback voltage after activation to detect a stalled or binding pump motor.

Conditions for Running the DTC

C0111
* The system voltage is 9-18 volts.
* The pump motor has been commanded OFF for longer than 1.4 seconds and then commanded ON.
* Voltage to the pump motor is greater than 11 volts when the pump motor is commanded ON.

C0113
* The system voltage is 9-18 volts.
* The system enable relay is ON.

C0114
* The system voltage is 9-18 volts.
* The system enable relay is ON.
* The pump motor has been commanded OFF for 1.4 seconds.

C0115
* The system voltage is 9-18 volts.
* The system enable relay is ON.
* The pump motor is commanded ON.
* No other pump motor faults have been detected.

C0120
* The system voltage is 9-18 volts.
* The system enable relay is ON.
* The pump motor is commanded ON.

Conditions for Setting the DTC

C0111

The EBCM excessive current draw from the pump motor.

C0113

The EBCM detects an open in the pump motor ground circuit.

C0114

This code sets for a possible open in the pump motor.

C0115

The EBCM monitors pump motor feedback voltage after activation.

C0120

This code sets for a possible open in the internal EBCM pump motor relay circuit.

Action Taken When the DTC Sets

If equipped, the following actions occur:

* The EBCM disables the antilock brake system (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 DTC will be current for as long as the fault is present.
* When the fault is no longer present, the DTC will be a history DTC.
* A history DTC will clear after 100 ignition cycles.

Reference Information
Schematic Reference

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

Component Connector End Views (Connector Views)
Description and Operation

ABS Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the EBCM.
2. Ignition OFF, test for less than 1.0 ohm between ground circuit terminal 31 and ground.

• 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 terminal 46 and ground.

• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ fuse is open, replace the BPMV.

4. If all circuits test normal, replace the BPMV and verify DTC does not reset. If DTC reset, replace the EBCM.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Brake Pressure Modulator Valve Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for EBCM replacement, setup and programming