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Home >> Ford >> 2000 >> Contour SE, 2.0 3, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2353 (Handles, Locks, Latches And Entry Systems) >> Diagnosis And Testing >> Handles, Locks, Latches and Entry Systems >> Pinpoint Tests >> Pinpoint Test H: DTC B2A25, B2574, Or B2575 >> Normal Operation - MKZ

Normal Operation - MKZ

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The Smart Junction Box (SJB) sends voltage signals to the passenger door lock control switch through the lock and unlock input circuits. When the lock or unlock switch is pressed, the corresponding voltage signal is routed to ground, signalling the SJB to lock or unlock the passenger doors and send a lock or unlock command to the Driver Door More (DDM) over the Medium Speed Controller Area Network (MS-CAN).

The DDM sends voltage signals to the driver door lock control switch through the lock and unlock input circuits. When the lock or unlock switch is pressed, the corresponding voltage signal is routed to ground, signalling the DDM to lock or unlock the driver door and send a lock or unlock command to the SJB over the MS-CAN  .

The door lock control switches have a dedicated ground circuit.

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