GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2005 🢒 Allure 🢒 DTC 🢒 DTC C0060-C0095

Circuit Description

The inlet and outlet valve solenoid circuits are supplied with battery power when the ignition is in the ON position. The EBCM controls the valve functions by grounding the circuit when necessary.

DTC Descriptors

This diagnostic procedure supports the following DTCs:

    • DTC C0060 Left Front ABS Solenoid 1 circuit malfunction
    • DTC C0065 Left Front ABS Solenoid 2 circuit Malfunction
    • DTC C0070 Right Front ABS Solenoid 1 circuit Malfunction
    • DTC C0075 Right Front ABS Solenoid 2 circuit Malfunction
    • DTC C0080 Left Rear ABS Solenoid 1 circuit Malfunction
    • DTC C0085 Left Rear ABS Solenoid 2 circuit Malfunction
    • DTC C0090 Right Rear ABS Solenoid 1 circuit Malfunction
    • DTC C0095 Right Rear ABS Solenoid 2 circuit Malfunction

Conditions for Running the DTC
    • The DTC can set anytime the ignition switch is in the ON position.
    • The DTC can set when the vehicle speed is greater then 6 km/h (4 mph) and the brake pedal is not applied.
    • The DTC can set when the vehicle speed is greater then 15 km/h (9 mph) and the brake pedal is applied.

Conditions for Setting the DTC

The DTC will set when the EBCM detects one of the following internal to the EBCM only:

    • An open in the solenoid coil or circuit.
    • A short to ground in the solenoid coil or circuit.
    • A short to voltage in the solenoid coil or circuit.

Action Taken When the DTC Sets

If equipped, the following actions occur:

    • The EBCM disables the ABS/TCS/VSES/DRP for the duration of the ignition cycle.
    • A malfunction DTC will set.
    • The ABS indicator turns ON.
    • The Stability Off indicator turns ON.
    • The Red BRAKE Warning indicator could turn on.

Conditions for Clearing the DTC
    • The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
    • 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

The solenoid valve circuit and the solenoid coil are internal to the EBCM. No part of the solenoid circuit is diagnosable external to the EBCM. The DTC sets when there is a malfunction in the solenoid circuit internal to the EBCM only.

Test Description

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

  1. This step determines if the DTC is current.

Step

Action

Yes

No

Schematic Reference: Antilock Brake System Schematics

Connector End View Reference: Antilock Brake System Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

  1. Using a scan tool clear the DTC.
  2. Remove the scan tool from the DLC.
  3. Carefully drive the vehicle above 12 km/h (8 mph) for several minutes.
  4. Turn OFF the ignition.
  5. Install a scan tool.
  6. Turn ON the ignition, with the engine OFF.
  7. Using the scan tool in Diagnostic Trouble Codes, check for DTCs.

Did any one of the DTCs C0060-C0095 reset as a current DTC?

Go to Step 3

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

3

Replace the electronic brake control module (EBCM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Is the repair complete?

Go to Step 4

--

4
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specification in the supporting text.

Does the DTC reset?

Go to Step 2

System OK