Yukon Denali AWD V8-6.2L (2007)
Seat Belt Tension Sensor: Description and Operation
INFLATABLE RESTRAINT PASSENGER SEAT BELT TENSION SENSOR
The seat belt tension sensor is used to enhance the Passenger Presence System (PPS) when an infant car seat is properly restrained on the front outboard
passenger seat. The seat belt tension sensor is a 3-wire potentiometer mounted on the lower seat belt anchor and provides an input to the PPS module.
When an infant car seat is properly restrained on the front passenger seat, the seat belt is tightly secured through the infant car seat. The seat belt pulls on
the tension sensor and changes the voltage signal to the PPS module. The PPS module uses the voltage signal to help determine if a tightly belted infant
car seat is installed. The PPS uses the inputs from the seat belt tension sensor and the PPS pressure sensor to determine if the instrument panel (I/P)
module should be suppressed or enabled. The PPS monitors the seat belt tension sensor circuits and sets DTC B0071 if a fault is detected.
