Mazda 2006 MX-5 Service Highlights page 376

SEAT TRACK POSITION SENSOR FUNCTION
• The seat track position sensor converts the seat position into an electrical signal and sends it to the SAS
control module.
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SEAT TRACK POSITION SENSOR CONSTRUCTION/OPERATION
• The seat track position sensor consists of a Hall element (semi-conductor) and a magnet. The sensor converts
the effect of the magnetic flux (produced by the magnet) on the Hall element, into an electrical signal.
• When the driver's seat is moved to a forward position, the metal plate installed near the front of the seat track
passes through the groove in the seat track position sensor. When this occurs the magnetic flux of the sensor
changes and that change is sent as an electrical signal to the SAS control module. The SAS control module
receives this signal and determines that the driver's seat has been moved to a forward position.
SEAT TRACK
POSITION SENSOR
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PASSENGER SENSING SYSTEM OUTLINE
Outline
• Measures the total seated weight on the passenger-side seat, determines whether there is an adult or child
(including a child-restraint seat), or that it is empty, and then controls operation (deployment) or non-operation
(non-deployment) of the passenger-side air bag module and pre-tensioner seat belt.
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PASSENGER SENSING SYSTEM CONSTRUCTION
• Consists of seat weight sensors installed above the passenger-side seat rails, a seat weight sensor control
module installed on the back side of the passenger-side seat cushion, the PAD indicator, and SAS control
module installed in the console panel.
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08–10–8
AIR BAG SYSTEM
FRONT
METAL PLATE
PAD INDICATOR
SAS CONTROL
MODULE
SEAT
POSITION
SAS
SIGNAL
CONTROL
MODULE
SEAT WEIGHT
SENSOR CONTROL
MODULE
SEAT WEIGHT
SENSOR (RH)
SEAT WEIGHT
SENSOR (LH)
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CHU0810S004
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