For 1990-2009 cars only
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 06: Pump Motor Circuit Low Voltage/OpenDTC C0110 61: Pump Motor Circuit Stuck
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
B+ | C0110 06 | C0110 06 | -- | -- |
Ground | -- | C0110 06 | -- | -- |
Component | Condition | DTCs | ||||||
|---|---|---|---|---|---|---|---|---|
Pump motor |
| C0110 61 |
Circuit/System Description
The pump motor is an integral part of the brake pressure modulator valve assembly, 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 the ABS, traction control or stability control operation is required, the EBCM activates the pump motor relay and turns the pump motor ON.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
C0110 06
| • | A short to ground or an open/high resistance is detected on the pump motor B+ circuit for 0.01 s. |
| • | An open/high resistance is detected on the pump motor ground circuit for 0.05 s. |
C0110 61
A faulty pump motor is detected.
Action Taken When the DTC Sets
| • | The EBCM disables the ABS, traction control, stability control and hill start assist for the duration of the ignition cycle. |
| • | The ABS indicator turns ON. |
| • | The traction control/stability control-active indicator turns ON. |
| • | The brake warning indicator turns ON. |
Conditions for Clearing the DTC
| • | A current DTC clears when the diagnostic runs and passes. |
| • | The EBCM will turn OFF the indicators in the next ignition cycle. |
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
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 K17 Electronic Brake Control Module (EBCM).
- Test for less than 5 Ω between the ground circuits listed below and ground.
- Verify that a test lamp illuminates between the B+ circuit terminal 1 and ground.
- If all circuits test normal, replace the brake pressure modulator valve assembly and verify the DTC does not reset.
| • | Terminal 13 |
| • | Terminal 38 |
| ⇒ | If greater than the specified value, test the ground circuit for an open/high resistance. |
| ⇒ | If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. |
| ⇒ | If the DTC resets, replace the K17 Electronic Brake Control Module (EBCM). |
Repair Instructions
| • | Perform the Diagnostic Repair Verification after completing the diagnostic procedure. |
| • | Control Module References for EBCM replacement, setup and programming |
