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DTC C0110

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

DTC Descriptors

DTC C0110 04: Pump Motor Circuit Open Circuit

DTC C0110 61: Pump Motor Circuit Actuator Stuck

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

B+ Terminal 1

-

C0110 04

-

C0110 61

Ground Terminal 16

-

C0110 04

-

C0110 61

Circuit/System Description

The pump motor is an integral part of the brake pressure modulator valve, 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 operation is required the EBCM activates the pump motor relay and battery power is provided to the pump motor. The pump motor is not serviceable.

Conditions for Running the DTC
    • The ignition switch is in the ON position.
    • Initialisation is complete.

Conditions for Setting the DTC
    • Pump motor voltage is not present 100 milliseconds after activation of the pump motor relay.
    • Pump motor voltage is present more than 1 second with no activation of the pump motor relay within 5 seconds.

Action Taken When the DTC Sets
    • The EBCM disables the ABS, traction control system and the dynamic rear proportion for the duration of the ignition cycle.
    • The ABS indicator illuminates.

Conditions for Clearing the DTC

The Electronic Brake Control Module (EBCM) automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles

Diagnostic Aids

Inspect the power and ground circuits for proper connections.

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

    •  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 Verification

Clear the DTCs then drive the vehicle in a straight line at a speed greater than 20 km/h (13 mph). The DTC should not set.

Circuit/System Testing
  1. Ignition OFF, disconnect the harness connector at the EBCM.
  2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 1 and ground.
    3. ⇒If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  3. Verify that a test lamp illuminates between the B+ circuit terminal 1 and ground circuit terminal 16.
    4. ⇒If the test lamp does not illuminate, test the ground circuit for an open or high resistance.
  4. Ignition OFF, separate the EBCM from the brake pressure modulator valve. Inspect the EBCM to brake pressure modulator valve connector for conditions such as damage, corrosion, or presence of brake fluid.
    5. ⇒If connector corrosion or damage is evident, replace brake pressure modulator valve and/or EBCM as necessary.
    ⇒If brake fluid is present, replace both brake pressure modulator valve and EBCM.
  5. Connect the EBCM harness to the EBCM with the brake pressure modulator valve still separated.
  6. Connect a test lamp between the pump motor circuits at the internal EBCM connector.
  7. Ignition ON, perform the Pump Motor Test using the scan tool.
    8. ⇒If the test lamp does not illuminate replace the EBCM and brake pressure modulator valve.
  8. If all circuits test normal, test or replace the brake pressure modulator valve.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

    •  Brake Pressure Modulator Valve Replacement
    • Control Module References for EBCM replacement, programming and setup
   


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