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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 525 (Anti-Theft System - Passive Anti-Theft System (Pats), Without Intelligent Access (IA)) >> Diagnosis And Testing >> Anti-Theft >> Pinpoint Tests >> Pinpoint Test C : B10D7:87 Or B10D7:8F >> Notes

Pinpoint Test C : B10D7:87 Or B10D7:8F: Notes

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions 

When the ignition transitions to RUN or START, the BCM activates the transceiver to read the key in the ignition lock cylinder. If the BCM does not receive a PATS key code or if the code is invalid, the PATS does not allow the vehicle to start.

BCM DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
B10D7:87 PATS Key: Missing Message Sets when the BCM does not read a PATS key when the ignition transitions to RUN.
B10D7:8F PATS Key: Erratic Sets when the BCM receives a partial or corrupt PATS key read.

Possible Causes: 

Visual Inspection and Diagnostic Pre-checks 

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