Normal Operation
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
Several modules receive network messages from the Instrument Panel Cluster (IPC) via the Medium Speed Controller Area Network (MS-CAN). The following information is included in the messages:
- Transmission gear selected
- Vehicle speed
- Parking aid disable switch status
All modules receiving a particular message should exhibit a symptom if the message is missing.
- DTC U0155 (Lost Communication With Instrument Panel Cluster (IPC) Control Panel) - set by the Parking Aid Module (PAM) when network messages are missing from the IC for greater than 5 seconds with the ignition in RUN.
This pinpoint test is intended to diagnose the following:
- Module communication
- PAM
- IPC