C1241

Circuit Description
The EBCM controls a bi-directional magnetic rotary solenoid. The solenoid is in the steering gear. The solenoid adjusts the amount of power steering assist in order to achieve a given level of driver effort in turning the vehicle. The EBCM varies the steering assist by adjusting the current flow through the solenoid. The amount of steering assist adjusted for steering is dependent upon vehicle speed. As the vehicle speed increases, the following actions occur:
- The steering assist decreases
- The driver effort increases.
As the vehicle speed decreases, the following actions occur:
- The steering assist increases
- The driver effort decreases.

Conditions for Running the DTC
The ignition is ON.

Conditions for Setting the DTC
The EBCM detects an open or short in the VES circuit when the feedback current is less than 360 mA while the absolute value of the commanded current is greater than 826 mA for 2.5 seconds.

Action Taken When the DTC Sets
- The EBCM disables the variable effort steering (YES) for the duration of the ignition cycle.
- The DIC displays the SERVICE STEERING System message.

Conditions for Clearing the DTC
- The condition for the DTC is no longer present (the DTC is not current) and you used the scan tool Clear DTC function.
- The condition for the DTC is no longer present (the DTC is not current) and you used the On-Board Diagnostics Clear DTC function.
- The EBCM automatically clears the history DTC when a current DTC is not detected in 50 consecutive drive cycles.

Diagnostic Aids
The vehicle may need to be driven to view non-zero values of the Magna Steer Commanded Current and Magna Steer Feedback Current on the scan tool.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. This step uses the scan tool to check the Magna Steer Feedback Current parameter.
6. This step checks for an open in the variable effort steering actuator and circuit.