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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2013 (Anti-Theft System - Passive Anti-Theft System (Pats)) >> Diagnosis And Testing >> Anti-Theft >> Pinpoint Tests >> Pinpoint Test E: DTC B1681 >> Normal Operation

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.

The Passive Anti-Theft System (PATS) transceiver receives voltage from the Smart Junction Box (SJB) on circuit CBP36. The PATS  transceiver and the Instrument Cluster (IC) communicate on the TX and RX circuits. The IC  compares the key code stored in memory and sends a message to the PCM to enable the starter and fuel injectors if the key code is correct.

This pinpoint test is intended to diagnose the following: 

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