Normal Operation and Fault Conditions
WARNING: This page is about a different car, the 2017 Ford Edge. 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 (usually less than 1 second), 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 Power Steering System .
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. |