Kia 2004.5 Spectra Service Technical Training page 283

2004.5 Spectra Technology
Supplemental Restraint System
The STPS resistance changes depending on its location
relative to a vane mounted on the seat rail. When the
STPS is positioned over the vane (9 latching positions
or more rearward of the forward-most position), its
resistance is approximately 900 ohms. When it is
positioned off the vane (within 8 latching positions
from the forward-most position), the sensor's
resistance is approximately 300ohms. The STPS
resistance values are measured without requiring
power to the circuit.
If the front seat(s) is placed within 8 latching positions
from the forward-most position (off the vane) in the
event of a frontal impact severe enough to deploy the
airbags, only the first stage circuit will be activated for
that airbag. If the front seat(s) is placed 9 latching
positions or more rearward of the forward-most
position (over the vane), then the SRSCM will deploy
the bag with either the first or second circuit,
depending on seat belt usage and severity of the
impact.
If an STPS condition prevents the SRSCM from
determining the position of the seat, a Seat Track
Sensor Fault Code is generated and the SRS warning
light will illuminate until erased from the SRSCM
memory with the Hi-Scan Pro.
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