GM Service Manual Online
For 1990-2009 cars only

Circuit Description

The EBCM performs several self-tests for any internal problems which may affect proper operation.

Conditions for Running the DTC

    • The ignition is ON.
    • The vehicle has achieved a speed greater than 10 km/h (7 mph).

Conditions for Setting the DTC

The EBCM detects an internal malfunction.

Action Taken When the DTC Sets

The following actions may occur.

    • The EBCM disables the ABS/DRP.
    • The ABS indicator turns ON.
    • The brake warning indicator turns ON.
    • The traction fault message is displayed.
    • The brakes message is displayed.

Conditions for Clearing the DTC

Certain failures that may cause this DTC to set cannot be cleared. Other failures that may cause this DTC to set may be cleared, at least temporarily, by using the scan tool Clear DTCs function.

Diagnostic Aids

Replace the EBCM if this DTC continues to set intermittently.

Step

Action

Yes

No

1

Did you perform the ABS Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - ABS

2

Use a scan tool in order to clear the DTCs.

Can the DTC be cleared?

Go to Step 3

Go to Step 4

3

Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

Go to Step 4

Go to Diagnostic Aids

4

Replace the EBCM. Refer to Electronic Brake Control Module Replacement .

Did you complete the replacement?

Go to Step 5

--

5

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

Does the DTC reset?

Go to Step 3

System OK