Circuit Description
After replacement of the electric power steering (EPS) assembly, the power steering control module (PSCM) must be configured with the proper tuning profile using the service programming system.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0551 Option Configuration Error
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The PSCM has not been configured with the proper tuning profile.
Action Taken When the DTC Sets
| • | DTC C0551 is stored in memory. |
| • | The instrument panel cluster (IPC) displays the SERVICE VEHICLE SOON warning indicator. |
| • | Steering assist is set to a default level. |
Conditions for Clearing the DTC
| • | A current DTC will clear after the PSCM has been configured with the proper tuning profile. |
| • | A history DTC will clear after 100 consecutive malfunction free ignition cycles after the PSCM has been configured. |
Diagnostic Aids
A newly replaced EPS assembly will set DTC C0551 on it's initial ignition ON cycle.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
Does the scan tool display Tuning Profile 0? | Go to Step 3 | Go to Step 4 | |
3 | Configure the power steering control module (PSCM). Refer to Control Module References in Computer/Integrating Systems. Did you complete the repair? | Go to Step 4 | -- |
4 |
Does DTC C0551 reset? | Go to Step 2 | System OK |
