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Home >> Lincoln >> 2009 >> MKX FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 920 (Handles, Locks, Latches And Entry Systems) >> Diagnostic Tests >> Locks, Latches and Entry Systems >> Pinpoint Tests >> Pinpoint Test A: All Door Locks Are Inoperative From One Switch >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2007 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

The smart junction box (SJB) monitors circuits CPL42 (GY/YE) and CPL43 (VT/GY) for a ground signal. If the door lock control switch connects circuit CPL42 (GY/YE) to ground circuit GD161 (BK/YE) or circuit GD175 (BK/BU) the doors lock. If the door lock control switch connects circuit CPL43 (VT/GY) to the ground circuit GD161 (BK/YE) or circuit GD175 (BK/BU) the doors unlock.

DTC B1309 - sets when the SJB senses a short to ground on circuit CPL42 (GY/YE).

DTC B1341 - sets when the SJB senses a short to ground on circuit CPL43 (VT/GY).

Possible Causes

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