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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 480 (Handles, Locks, Latches And Entry Systems) >> Diagnosis And Testing >> Handles, Locks, Latches and Entry Systems - Without Intelligent Access (IA) >> Pinpoint Tests >> Pinpoint Test L : All Door Locks Are Inoperative From One Switch >> Pinpoint Test L : All Door Locks Are Inoperative From One Switch

Pinpoint Test L : All Door Locks Are Inoperative From One Switch

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.

  1. L1 CHECK THE SUSPECT DOOR LOCK CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN

    • Disconnect: Suspect Door Lock Control Switch.
    • For the left door lock control switch, measure:
      Positive Lead Measurement / Action Negative Lead
      C507-4
      GFD134423Courtesy of FORD MOTOR COMPANY
      Ground
    • For the right door lock control switch, measure:
      Positive Lead Measurement / Action Negative Lead
      C605-4
      GFD134423Courtesy of FORD MOTOR COMPANY
      Ground

    Is the resistance less than 3 ohms? 

    Yes  INSTALL a new door lock control switch.
    No  REPAIR the circuit.