Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC C0550 00: Electronic Control Unit (ECU) PerformanceDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Electronic Control Unit (ECU) Performance | -- | -- | -- | C0550 00 |
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the MIL/DTC
The ignition switch is in the ON position.
Conditions for Setting the MIL/DTC
An internal EBCM malfunction exists.
Action Taken When the MIL/DTC Sets
One or more of the following actions may occur:
| • | The antilock brake system (ABS) and vehicle stability enhancement system (VSES) are disabled. |
| • | TCS is degraded. |
| • | The ABS/TCS indicators illuminate. |
| • | The red BRAKE Warning indicator illuminates. |
Conditions for Clearing the MIL/DTC
| • | The ABS Indicator may remain illuminated after the DTCs are cleared, until the vehicle is driven at speeds greater than 13 km/h (8 mph) and the self test is completed. |
| • | The condition for the DTC is no longer present. |
| • | The EBCM clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Antilock Brake System Connector End Views
Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool EBCM info.
Diagnostic Aids
Verify that the EBCM power and ground circuits are good if DTC C0550 is stored in history.
Circuit/System Verification
DTC C0550 will set as result of an internal (EBCM) circuit failure.
| ⇒ | Replace the EBCM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for EBCM replacement, setup, and programming.
