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
One or more of the following actions may occur:
| • | The EBCM disables the ABS/dynamic rear proportioning (DRP)/traction control system (TCS)/vehicle stability enhancement system (VSES). |
| • | The ABS indicator turns ON. |
| • | The brake warning indicator turns ON. |
| • | The message center displays the service stability system message. |
| • | 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
Replace the EBCM if this DTC continues to set intermittently.
Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
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 | Test drive the vehicle. Refer to Diagnostic Test Drive . Does the DTC reset? | Go to Step 4 | Go to Diagnostic Aids |
4 | Replace the electronic brake control module (EBCM). Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 5 | -- |
5 |
Does the DTC reset? | Go to Step 3 | System OK |
