Normal Operation
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
During each vehicle start sequence, the Passive Anti-Theft System (PATS) transceiver reads the PATS key identification code and sends the data to the Instrument Cluster (IC).
- DTC B1601 (PATS Received Incorrect Key-Code From Ignition Key Transponder) - sets when there is an unprogrammed PATS key. There is no concern with the PATS key itself, but the key must be programmed into the PATS memory (unless the maximum number of keys are already programmed).
This pinpoint test is intended to diagnose the following:
- PATS key
- PATS transceiver
- IC