Circuit Description
This DTC identifies a malfunction within the electronic brake control module (EBCM).
DTC Descriptor
This diagnostic procedure supports the following DTCs:
DTC C0550 ECU Malfunction
Conditions for Running the DTC
The ignition switch is in the ON position.
Conditions for Setting the DTC
DTC C0550 is set when an internal EBCM or solenoid malfunction exists.
Action Taken When the DTC Sets
If equipped, the following actions occur:
| • | The EBCM disables the antilock brake system (ABS)/traction control system (TCS) for the duration of the ignition cycle. |
| • | A malfunction DTC will set. |
| • | The ABS indicator turns ON. |
| • | The TCS indicator turns ON. |
Conditions for Clearing the DTC
| • | The condition for the DTC is no longer present and you used the scan tool Clear DTC function. |
| • | The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Antilock Brake System Schematics Connector End View Reference: Antilock Brake System Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Are any other DTCs present besides C0550? | Go to Step 3 | |
3 | Replace the electronic brake control module (EBCM). Refer to Control Module References for replacement, setup, and programming. Is the replacement complete? | Go to Step 4 | -- |
4 |
Does the DTC reset? | Go to Step 2 | System OK |
