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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1098 (Handles, Locks, Latches And Entry Systems) >> Diagnostic Tests >> Locks, Latches and Entry Systems - Module Controlled >> Pinpoint Tests >> Pinpoint Test C: All Door Locks Are Inoperative From One Switch >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

The door lock control switches provide a ground, circuit 57 (BK) for the vehicle security module (VSM) lock and unlock signal circuits 119 (PK/YE) and 120 (PK/LG). The door lock actuator output circuits 117 (PK/BK), 118 (PK/OG) and 163 (RD/OG) are at ground on circuit 57 (BK) through the VSM when the lock and unlock relays are not energized.

When the VSM receives a lock request through circuit 119 (PK/YE), the VSM processes the lock request and energizes the all lock relay, supplying voltage to circuit 117 (PK/BK) to lock the doors. Circuits 118 (PK/OG) and 163 (RD/OG) are at ground on circuit 57 (BK) through the VSM.

When the VSM receives an unlock request through circuit 120 (PK/LG), the VSM processes the unlock request and energizes the all unlock relay and driver unlock relay supplying voltage to circuits 118 (PK/OG) and 163 (RD/OG) to unlock the doors. Circuit 117 (PK/BK) is at ground on circuit 57 (BK) through the VSM.

This pinpoint test is intended to diagnose the following:

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