For 1990-2009 cars only
DTC Descriptor
DTC C0550 00: Electronic Control Unit (ECU) PerformanceDiagnostic Fault Information
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Circuit/System Description
The electronic brake control module (EBCM) detects an internal malfunction.
Conditions for Running the DTC
The ignition switch is in the ON position.
Conditions for Setting the DTC
An internal EBCM malfunction exists.
Action Taken When the DTC Sets
One or more of the following actions may occur:
| • | The antilock brake system (ABS) dynamic rear proportion (DRP) are disabled. |
| • | ETS is degraded. |
| • | The ABS/ESC/ETS indicators turn ON. |
| • | The red BRAKE Warning indicator turns ON. |
Conditions for Clearing the DTC
The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.
Circuit/System Verification
Verify that the DTC will clear with a scan tool and does not reset.
| ⇒ | If the DTC will not clear with a scan tool, replace the EBCM. |
Repair Instructions
Control Module References for EBCM replacement, setup, and programming
Repair Verification
