For 1990-2009 cars
ABS Components
Antilock Brake System Schematics
Handling ESD Sensitive Parts Notice

### Circuit Description

The pump motor relay is part of the Electronic Brake Control Module (EBCM). The EBCM turns ON and OFF the pump motor relay as deemed necessary to activate the pump motor.

### Conditions for Setting the DTC

The Electronic Brake Control Module (EBCM) detects a stuck pump motor during initialization.

### Action Taken When the DTC Sets

• | The ABS disables

• | The ABS warning indicator turns ON

### Conditions for Clearing the DTC

The condition responsible for setting the DTC no longer exists and the Scan Tool Clear DTCs function is used. If the pump motor monitor signal is still incorrect, DTC C0110 will set again as a current DTC and the ABS indicator remain ON.

### Diagnostic Aids

If DTC C0114 (Pump Motor Circuit Open) is set (current or history) go to the DTC C0114 table first.

### Test Description

The numbers below refer to step numbers on the Diagnostic Table.

1. This step determines whether the DTC is current.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform A Diagnostic System Check - ABS? | -- | Go to Step 2 | Go to Diagnostic System Check - ABS
2 |

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Use the scan tool in order to clear the DTCs.
4. Using the scan tool, cycle the pump motor in the Special Functions menu.
5. Read the DTCs.

Does the DTC reset?

--

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

3 |

1. Test the Solenoid Input circuit for an open, high resistance, or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
2. Test the Solenoid Ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Was a problem found and corrected?

--

Go to Diagnostic System Check - ABS

Go to Step 4

4 | Replace the Brake Modulator Assembly. Refer to Brake Pressure Modulator Valve Assembly Replacement . Is the repair complete? | -- | Go to Step 5 | --
5 |

1. Use the scan tool in order to clear the DTCs.
2. Using the scan tool, cycle the pump motor in the Special Functions menu.
3. Read the DTCs.

Does the DTC reset?

--

Go to Step 2

System OK