DTC C0110 Without JL7
Diagnostic Instructions
DTC Descriptor
DTC C0110 04: Pump Motor Open Circuit
DTC C0110 61: Pump Motor Circuit Actuator Stuck
Circuit/System 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.
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 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 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 proportioning (DRP) is degraded. |
| • | The ABS indicator illuminates. |
| • | The vehicle dynamics caution (VDC) indicator illuminates. |
| • | The SERVICE STABILITRAK message is displayed on the driver information center (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. |
Diagnostic Aids
The pump motor is integral to the brake pressure modulator valve (BPMV). The pump motor is not serviceable.
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
ABS Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References
for Scan Tool Information
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the EBCM.
- Test for less than 5 ohms of resistance between the ground circuits terminals E and F and ground.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
- Ignition ON, verify that a test lamp illuminates between the B+ circuits terminals A and B 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+ circuit fuse is open, test or replace the BPMV. |
- Ignition OFF, remove the EBCM from the BPMV.
- Inspect the EBCM to BPMV connector to insure there is no damage, corrosion, or presence of brake fluid.
| ⇒ | If connector corrosion or damage is evident, replace the BPMV and/or EBCM as necessary. |
| ⇒ | If brake fluid is present, replace both the BPMV and EBCM. |
- If all circuits test normal, replace the BPMV.
Repair Instructions
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
DTC C0110 With JL7
Diagnostic Instructions
DTC Descriptors
DTC C0110 03 : Pump Motor Circuit Voltage Below Threshold
DTC C0110 04 : Pump Motor Circuit Open Circuit
DTC C0110 61 : Pump Motor Circuit Actuator Stuck
Circuit/System 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.
Conditions for Running the DTC
C0110 04
| • | System and ignition voltage is above 10.5 volts. |
| • | The system enable relay is ON. |
| • | The pump motor has been commanded OFF for 2.5 seconds. |
C0110 61 03
| • | The system enable relay is ON. |
| • | The pump motor has been commanded ON, OFF and ON again. |
Conditions for Setting the DTC
C0110 03
The EBCM detects an short in the pump motor circuit when the feedback voltage remains less than 0.75 volt for more than 50 msec.
C0110 04
The EBCM detects an open in the pump motor circuit when the feedback voltage remains greater than 0.75 volt for more than 50 msec.
C00110 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
| • | The EBCM disables the ABS/Traction Control System (TCS)/Vehicle Stability Enhancement System (VSES) for the duration of the ignition cycle. |
| • | The ABS indicator turns ON. |
| • | The Traction Control indicator turns ON. |
| • | The driver information center (DIC) displays the Service Stability System message. |
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.
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
ABS Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References
Circuit/System Testing
- Ignition OFF, disconnect the EBCM harness connector and connect a test lamp between the battery positive voltage circuit terminal, and to chassis ground.
- 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. |
- 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. |
- Ignition OFF, remove the EBCM from the BPMV.
- 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. |
- Connect the EBCM harness to the EBCM with the BPMV still separated.
- Connect a test lamp between the pump motor circuits, internal EBCM side.
- Ignition ON, use the scan tool to perform the Pump Motor Test.
| ⇒ | 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.
