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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1160 (Handles, Locks, Latches And Entry Systems) >> Diagnosis And Testing >> Locks, Latches and Entry Systems >> Pinpoint Tests >> Pinpoint Test Ac : B1087:83 Or B1087:87 >> Notes

Pinpoint Test Ac : B1087:83 Or B1087:87: Notes

WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.

Refer to Remote Keyless Entry and Alarm for schematic and connector information.

Normal Operation and Fault Conditions 

The DDM communicates with the left RDM over a LIN circuit. In the event the left RDM fails, the left rear power window and power door lock become inoperative.

The PDM communicates with the right RDM over a LIN circuit. In the event the right RDM fails, the right rear power window and power door lock become inoperative.

DDM/ PDM DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
B1087:83 LIN Bus "A": Value Of Signal Protection Calculation Incorrect Sets when the DDM/ PDM detects a fault with the communication from the corresponding RDM.
B1087:87 LIN Bus "A": Signal Invalid Sets when the DDM/ PDM detects a fault with the communication from the corresponding RDM.

Possible Cause 

Visual Inspection and Diagnostic Pre-checks 

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