Pinpoint Test K: Adaptive Front Steering Lock Concern
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Normal Operation and Fault Conditions
The SECM is equipped with a locking device which locks the adaptive steering system in the case of a system error. The SECM performs several tests on the locking system, if 1 or more of the tests fail, a DTC is set.
The adaptive steering system lock DOES NOT lock the steering column. However, when the lock is engaged, the steering wheel may be off-set from center.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| SECM C1039:7F | Active Front Steering (AFS) Lock: Actuator Stuck Off | Sets when the SECM cannot activate the adaptive steering lock at engine start. |
| SECM C1039:92 | Active Front Steering (AFS) Lock: Performance Or Incorrect Operation | Sets when the SECM detects the adaptive steering lock fails the unlocking test. |
| SECM C1039:94 | Active Front Steering (AFS) Lock: Unexpected Operation | Sets when the SECM detects the adaptive steering lock fails the integrity test or the locking disc calibration test. |
| SECM C200D:28 | Motor Rotation Angle Sensor: Signal Bias Level Out Of Range/Zero Adjustment Failure | Sets when the SECM detects the adaptive steering motor angle sensor signal is outside the normal operating range or if the sensor is incapable of learning the center position. |
| SECM C200D:62 | Motor Rotation Angle Sensor: Signal Compare Failure | Sets when the SECM detects the adaptive steering motor angle sensor fails to learn the center position. |
| SECM U2001:92 | Reduced System Function: Performance Or Incorrect Operation | Sets due to a restraint airbag impact event or a fuel cutoff event. Due to the fault setting conditions, the installation of a new steering wheel and SECM are not covered under the vehicle warranty. Subsequently, a RVC is not provided for component replacement due to this DTC. |
| SECM U3000:46 | Control Module: Calibration/Parameter Memory Failure | Sets when the SECM detects an internal fault. |
| SECM U3000:49 | Control Module: Internal Electronic Failure | Sets when the SECM detects an internal fault. |
| SECM U3000:61 | Control Module: Signal Calculation Failure | This DTC sets due to an incomplete or an improperly performed trim routine. |
| SECM U3000:9A | Control Module: Component or System Operating Conditions | Sets when the SECM detects an internal fault. |
Possible Sources
- Incorrect sensor input
- SECM