GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Malibu 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 DTC C0551

Circuit Description

When the electronic brake control module (EBCM) is replaced, software and calibrations are flash programmed into the EBCM. The EBCM receives the vehicle powertrain options information from the powertrain control module (PCM) in order for the EBCM to automatically calibrate to the vehicle.

Conditions for Running the DTC
    • The ignition is ON.
    • Ignition voltage is greater than 8 volts.

Conditions for Setting the DTC

One or more of the following conditions are present:

    • The incorrect EBCM is installed on the vehicle.
    • The incorrect software or calibrations have been flash programmed into the EBCM.

Action Taken When the DTC Sets
    • The EBCM disables the TCS until the DTC becomes a history DTC.
    • The Traction Off indicator turns ON.
    • The ABS remains functional.

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

If the DTC was set after EBCM replacement, verify that the replacement EBCM and software are correct for the vehicle.

Step

Action

Yes

No

Schematic Reference: Antilock Brake System Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

Is the EBCM the correct module for the vehicle?

Go to Step 4

Go to Step 3

3

Important: Perform the setup procedure for the EBCM. An unprogrammed EBCM will result in the following conditions:

   • Inoperative or poorly functioning system operations
   • The EBCM may set DTCs

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

Did you complete the repair?

Go to Step 5

Go to Step 4

4

Reprogram the EBCM. Refer to Service Programming System (SPS) in Programming.

Did you complete the repair?

Go to Step 5

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5
  1. Use the scan tool in order to clear the DTCs.
  2. Turn ON the ignition.

Does the DTC reset?

Go to Step 2

System OK