Power Seat Switch: Description and Operation

Fig. 1 Memory and Heated Seat Switches:

Memory Selector Switch:

MEMORY SET SWITCH
The memory selector switch is mounted on the drivers seat cushion side shield, within easy reach of the driver. This switch provides a way to set new and recall preset positions of seat, seat recliner, and the side view mirror. There are three separate switches incorporated into the memory set switch. The memory position set switch and memory position one and two switches.

The memory set switch cannot be repaired or adjusted. If one switch is damaged or faulty the entire memory set switch must be replaced.

When the memory set switch is depressed, a resistance multiplexed signal is sent to the memory/ heated seat module via hard wired connections. The memory/heated seat module than receives this hard-wired input and moves the power seat track/side view mirror according to the preset position. When the memory system is in set mode a chime will be generated by the body control module.

See the owner's manual in the vehicle glove box for more information on the features, use and operation of the memory switch.

DRIVER POWER SEAT SWITCH
Vehicles equipped with power seats utilize a eight-way driver power seat switch This eight way power seat switch features two knobs ganged together on the outboard seat cushion side shield.

The switch is secured to the back of the seat cushion side shield with two screws. However, the control knobs for the eight-way power seat switch unit must be removed before the seat switch can be removed from the side shield.

The power seat switch cannot be repaired. If one switch is damaged or faulty, the entire power seat switch assembly must be replaced.

When a power seat switch control knob or knobs are actuated, a battery feed and a ground path are applied through the switch contacts to the power seat track or recliner adjuster motor. The selected adjuster motor operates to move the seat track or recliner through its drive unit in the selected direction until the switch is released, or until the travel limit of the adjuster is reached. When the switch is moved in the opposite direction, the battery feed and ground path to the motor are reversed through the switch contacts. This causes the adjuster motor to run in the opposite direction.

No power seat switch should be held applied in any direction after the adjuster has reached its travel limit. The power seat adjuster motors each contain a self-resetting circuit breaker to protect them from overload. However, consecutive or frequent resetting of the circuit breaker must not be allowed to continue, or the motor may be damaged. See the owner's manual in the vehicle glove box for more information on the power seat switch functions and the seat adjusting procedures.

PASSENGER POWER SEAT SWITCH
Vehicles equipped with power seats utilize a eight/ six-way passenger power seat switch. This eight/six-way power seat switch features two knobs ganged together on the outboard seat cushion side shield. Vehicles equipped with the eight-way, incorporate a power rear seat riser motor. Vehicles with the six-way do not.

The switch is secured to the back of the seat cushion side shield with two screws. However, the control knobs for the power seat switch must be removed before the seat switch can be removed from the side shield.

The power seat switch cannot be repaired. If one switch is damaged or faulty, the entire power seat switch assembly must be replaced.

When a power seat switch control knob or knobs are actuated, a battery feed and a ground path are applied through the switch contacts to the power seat track or recliner adjuster motor. The selected adjuster motor operates to move the seat track or recliner through its drive unit in the selected direction until the switch is released, or until the travel limit of the adjuster is reached. When the switch is moved in the opposite direction, the battery feed and ground path to the motor are reversed through the switch contacts. This causes the adjuster motor to run in the opposite direction.

No power seat switch should be held applied in any direction after the adjuster has reached its travel limit. The power seat adjuster motors each contain a self-resetting circuit breaker to protect them from overload. However, consecutive or frequent resetting of the circuit breaker must not be allowed to continue, or the motor may be damaged. See the owner's manual in the vehicle glove box for more information on the power seat switch functions and the seat adjusting procedures.