Normal Operation and Fault Conditions
With the ignition ON, the PCM sends messages to the SASM through the GWM over the HSCAN 2. If the SASM does not receive these messages within a certain time frame (usually less than 1 second), the SASM sets a DTC. For information on the messages sent to the SASM by the PCM, refer to the NETWORK MESSAGE CHART in Description and Operation of Anti-Lock Brake System (ABS) and Stability Control article.
PPT AW SASM DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0100:00 | Lost Communication With ECM/PCM "A": No Sub Type Information | Sets in continuous memory and on-demand when the SASM detects any of the PCM messages are missing. This can be due to a PCM failure, a circuit failure on the HSCAN or an excessive load on the network. |