C0550

DTC C0550

Circuit Description

The electronic brake control module (EBCM) detects an internal malfunction or loss of ground.

DTC Descriptors

This diagnostic procedure supports the following DTC:

DTC C0550 Electronic Control Unit (ECU) Performance

This vehicle has DTCs which include DTC Symptoms. For more information on DTC Symptoms, refer to DTC Symptom Description.





Conditions for Running the DTC

The ignition switch is in the ON position.

Conditions for Setting the DTC

C0550 00

An internal EBCM malfunction exists.

C0550 04

System voltage is less than half the ignition voltage continuously for 0.04 seconds.

Action Taken When the DTC Sets

One or more of the following actions may occur:

^ The EBCM disables the ABS system.
^ The EBCM disables or degrades DRP function.
^ The ABS indicator turns ON.
^ The Traction OFF indicator turns ON.
^ The Brake Warning indicator turns ON.

Diagnostic Aids

Possible causes of this DTC:

^ Open ground at the EBCM
^ Internal malfunction in the EBCM

Test Description

The number below refers to the step number on the diagnostic table.
2. This step tests for a proper ground to the EBCM.

Step 1 - Step 4: