Sentra L4-1.8L (QG18DE) (2004)
Neutral Safety Switch: Description and Operation
PNP SWITCH
Component Description
When the gear position is P or N (A/T models), Neutral (M/T models), park/neutral position (PNP) switch is ON.
ECM detects the park/neutral position when continuity with ground exists.
For A/T models, the park/neutral position (PNP) switch assembly also indicates a transmission range switch to detect selector lever position.