Normal Operation
WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
Several modules receive network messages from the Smart Junction Box (SJB) via the Medium Speed Controller Area Network (MS-CAN). The information included in the message is the ignition switch position.
As more than one module receives each of these messages, all modules receiving a particular message should exhibit a symptom if the message is missing.
- DTC U0140 (Lost Communication With Body Control Module (GEM)) - set by the Parking Aid Module (PAM) when network messages are missing from the SJB for greater than 5 seconds with the ignition in RUN.
This pinpoint test is intended to diagnose the following:
- Module communication
- PAM
- SJB