Memory Seat System Components
The memory seat system consists of the following components:
• | The seat adjuster switch |
• | The driver seat adjuster motor assembly |
• | The PWR/HEATED SEAT PSD 30A circuit breaker |
Memory Seat System Controls
The memory seat system is controlled by the following components:
Memory Seat System Operation
The seat adjuster motors are controlled by the memory seat module through
the adjuster motor supply circuits. Adjuster motor operation occurs when the
memory seat module switches one of the adjuster motor supply circuits to
battery positive voltage and the other to ground. The adjuster motors are
reversible and the direction of the adjuster motor rotation is determined
by which of the adjuster motor supply circuits is switched to battery positive
voltage and which is grounded.
The seat adjuster switch is supplied with a 12-volt reference
circuit by the memory seat module. When a seat adjuster switch is pressed
the signal circuit is closed to the 12-volt reference. Closing the
switch signal circuit to the reference voltage pulls the signal circuit
high indicating to the memory seat module the switch status is active.
The memory seat module also uses the serial data circuit for diagnostic
purposes and to send and receive messages which affect the memory seat
system operation.
The seat adjuster motors are equipped with position sensors. The position
sensors are supplied with a 5-volt reference circuit and low reference
circuit from the memory seat module. Whenever a memory seat module function
is active the memory seat module receives a signal from each position sensor
which varies from 0 to 5 volts depending on the seat position. The memory
seat module uses the position sensor signal voltages to determine the seat
position when storing or recalling seat position settings.