Antilock Brakes / Traction Control Systems

DTC C0550

Circuit Description
The electronic brake control module (EBCM) performs several self-tests for internal problems which may affect proper operation.

DTC Descriptor
This diagnostic procedure supports the following DTC:

DTC C0550 Electronic Control Unit (ECU) Performance

Conditions for Running the DTC
The ignition is ON.

Conditions for Setting the DTC
The EBCM detects an internal malfunction.

Action Taken When the DTC Sets
^ The EBCM disables the ABS/dynamic rear proportion (DRP)/traction control system (TCS).
^ The ABS indicator turns ON.
^ The brake warning indicator turns ON.
^ The traction off indicator turns ON.

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

Diagnostic Aids

Step 1 - Step 5:

Replace the EBCM if this DTC continues to set intermittently.