The passenger presence detection system detects the presence of a passenger in the front seat. The system is designed primarily to prevent replacement of airbag components that fire needlessly in an accident. The PPD system consistsof a weight sensor and an interface unit.
The above DTCs are recorded when the defect of the PPD is detected in the PPD circuit.
Item
Detecting Condition
Possible Cause
Enable Conditions
? Ignition "ON"
? Faulty PPD-front sensor signal circuit.
? Faulty PPD-front sensor
? Faulty SRSCM.
Threshold Value
? When the PPD-front sensor is defect.
Diagnostic Time
Qualification
? More than 4 sec
De-Qualification
? More than 9.6 sec
? “Defect stauts” is inverted to “Not occupied stauts" : 19.2 sec
Stauts
Sensor characteristics
Occupied(15 kg)
RP = 50 k? for = 15kg (33lb)
? W : Mass of weight
Not occupied(0.6 kg)
RP > 50 k? for < 0.6kg (1.3lb)