Normal Operation and Fault Conditions
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2018 Lincoln MKX, 2018 Lincoln Continental, 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, and 2018 Ford F-350 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
With the ignition ON, the PCM sends messages to the SECM through the GWM and the SASM over the HS-CAN 2. The SASM and the SECM communicate over a private CAN. If the SECM does not receive these messages within a certain time frame, the SECM sets a DTC. For information on the messages sent to the SECM by the PCM, refer to the Network Message Chart in the Description and Operation in appropriate Power Steering System article.
SECM DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0100:00 | Lost Communication With ECM/PCM "A": No Sub Type Information | Sets when the SECM detects any of the PCM messages is missing. This can be due to a PCM failure, a circuit failure on the HS-CAN or an excessive load on the network. |