For 1990-2009 cars only
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 DTC
The ignition is ON.
Conditions for Setting the DTC
An internal EBCM malfunction exists.
Action Taken When the DTC Sets
| • | The EBCM disables the Antilock Brake System (ABS)/Traction Control System (TCS)/Electronic Stability Control (ESP) for the duration of the ignition cycle. |
| • | The multi function display (MFD) displays the ABS Fault message. |
| • | The multi function display (MFD) displays the Traction Ctrl Off message. |
| • | The multi function display (MFD) displays the Stability Ctrl Off message. |
Conditions for Clearing the DTC
| • | The condition for setting the DTC is no longer present. |
| • | The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
| • | The DTC can be cleared using a scan tool. |
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
DTC C0550 will set as result of internal EBCM circuit fault.
| ⇒ | If the DTC is set to current, replace the EBCM. |
Repair Instructions
| • | Perform the Diagnostic Repair Verification after completing the diagnostic procedure. |
| • | Control Module References for EBCM replacement, setup, and programming |
