9-5 Aero (9600) L4-2.3L Turbo (2.3HOT) (2004)
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Equipment
The PPS system components consist of a silicone filled seat mat connected to a pressure sensor, a force sensor for measuring seatbelt loading and two
indicator LEDs, passenger airbag/side airbag ON or OFF.
Location
The PPS system control module is located on the underside of the passenger seat. A mat, containing the silicone filled seat mat and pressure sensor, is
fitted on the seat and the belt force sensor (643) on the belt anchorage point. The two indicator lamps ON/OFF are located in the ACC panel.
Checking and activation
The PPS system control module detects whether:
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a passenger is sitting in the passenger seat. The PPS control module converts the pressure into weight by means of a pressure sensor.
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a child seat is connected to the seatbelt. The weight is calculated using the belt force sensor if the tensioning force of the seat then affects the total
weight.
Based on this information the PPS control module illuminates one of the two indicator lamps depending on whether or not the passenger airbag/side
airbag is active. Diagnosis and status are sent via a communication cable to the airbag's control module (ACM) which connects or disconnects the
passenger airbag/side airbag.
When a fault occurs the passenger airbag/side airbag is disconnected.
