Seat System - Seats-Seating - 3RD Row: Overview Ford Explorer V

Overview

The third row power fold seat features a one-touch operation that can adjust the LH and RH seats independently or combined into a NORMAL, STOW or FOLD position with a single activation of the seat control switch. The third row power fold seat also includes obstacle detection that allows the seat to stop and reverse direction if it hits an obstacle so that the obstacle can be removed.

The seat control switch is located behind the third row seat on the LH quarter trim panel. The third row power fold seat only operates when the vehicle is in park and the liftgate is open. The folding head restraints must be manually returned to the upright position. Power to the seat will time-out after 10 minutes but can be enabled by opening any door, turning the ignition on, pressing any keyless entry keypad button or the unlock button on the key fob.

Scheme 48

Normal Operation and Fault Conditions

The 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 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 fold together to prevent the seat from being occupied.

The 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 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 fold together to prevent the seat from being occupied.

The PFSM supplies voltage and ground to the power-stow seat motor to move the seat to and from the STOW position when selected by the seat control switch. When STOW is selected from NORMAL, the backrest folds forward to release the spring loaded headrest. If an obstruction is detected in the STOW range of movement, the seat stops, reverses movement a few inches and then stops again until the obstruction is removed. When the obstruction has been removed, the seat control switch must be pressed again to reset the request. The seat goes to the power-stow seat motor home position (seat folded and latched to the floor) and then continues with the STOW request. If the PFSM detects an open or short in the power-stow seat motor circuitry, motor operation is disabled. If a short to ground is present, the motor works in only one direction.

A Hall-effect sensor is located inside each of the power-stow seat motor assemblies to detect power-stow seat motor movement and position to the PFSM. If the sensor does not detect motor movement during a request from the seat control switch, the PFSM disables the power-stow seat motor output. When the seat control switch is pressed again, the seat moves in short increments indicating a fault with the sensor or circuitry.

The PFSM supplies voltage and ground to the power-stow seat motor to move the seat to and from the STOW position when selected by the seat control switch. When STOW is selected from NORMAL, the backrest folds forward to release the spring loaded headrest. If an obstruction is detected in the STOW range of movement, the seat stops, reverses movement a few inches and then stops again until the obstruction is removed. When the obstruction has been removed, the seat control switch must be pressed again to reset the request. The seat goes to the power-stow seat motor home position (seat folded and latched to the floor) and then continues with the STOW request. If the PFSM detects an open or short in the power-stow seat motor circuitry, motor operation is disabled. If a short to ground is present, the motor works in only one direction.

A Hall-effect sensor is located inside each of the power-stow seat motor assemblies to detect power-stow seat motor movement and position to the PFSM. If the sensor does not detect motor movement during a request from the seat control switch, the PFSM disables the power-stow seat motor output. When the seat control switch is pressed again, the seat moves in short increments indicating a fault with the sensor or circuitry.

The PFSM supplies voltage and ground to the power-fold seat motor to move the seat to and from the FOLD and NORMAL positions when selected by the seat control switch. When FOLD is selected, the backrest folds forward and releases the spring loaded headrest. If an obstruction is detected in the FOLD/NORMAL range of movement, the seat stops, reverses movement a few inches and then stops again until the obstruction is removed. When the obstruction has been removed, the seat control switch must be pressed again to reset the request. The seat goes to the power-fold seat motor home position (seat folded and latched to floor) and then continues with any seat position requested. If the PFSM detects a power-fold seat motor circuit fault (open or short), motor operation is disabled. If a short to ground is present, the motor works in only one direction

A Hall-effect sensor is located inside each of the power-fold seat motor assemblies to detect motor movement and seat position to the PFSM. If the sensor does not detect motor movement during a request from the seat control switch, the PFSM disables the power-fold seat motor output.

The PFSM supplies voltage and ground to the power-fold seat motor to move the seat to and from the FOLD and NORMAL positions when selected by the seat control switch. When FOLD is selected, the backrest folds forward and releases the spring loaded headrest. If an obstruction is detected in the FOLD/NORMAL range of movement, the seat stops, reverses movement a few inches and then stops again until the obstruction is removed. When the obstruction has been removed, the seat control switch must be pressed again to reset the request. The seat goes to the power-fold seat motor home position (seat folded and latched to floor) and then continues with any seat position requested. If the PFSM detects a power-fold seat motor circuit fault (open or short), motor operation is disabled. If a short to ground is present, the motor works in only one direction

A Hall-effect sensor is located inside each of the power-fold seat motor assemblies to detect motor movement and seat position to the PFSM. If the sensor does not detect motor movement during a request from the seat control switch, the PFSM disables the power-fold seat motor output.

REFER to Seating - Power-Fold .

DTC FAULT TRIGGER CONDITIONS