Pinpoint Test BV : Seat Latch Motor And Latch Switch Functional Test - RH Third Row Power Seat: Notes

WARNING: This page is about a different car, the 2015 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.

Pinpoint Test BV: Seat Latch Motor and Latch Switch Functional Test - RH Third Row Power Seat

Refer to Wiring Diagrams Power Seats for schematic and connector information.

Normal Operation

The Power-Fold Seat Module (PFSM) supplies voltage and ground to the seat latch release motor to electronically release the seat latch from the latched position (seat folded and latched to the floor) when the third row seat control switch sends a signal to the PFSM to move the seat to the STOW or TAILGATE position. The PFSM monitors the latch switch to determine if the position of the latch is closed or released. If the seat latch does not release, the latch must be mechanically released to move the seat from the latched home position. If a fault is detected during a seat operation the seat may enter a faulted state. When the seat is in a faulted state the seat backrest and cushion will fold together to prevent the seat from being occupied.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Latch release motor and switch
PFSM