Throttle Position Sensor
WARNING: This page is about a different car, the 1989 Nissan Pickup, 1989 Nissan Pathfinder, 1989 Nissan Maxima, and 1989 Nissan 300ZX. However, it is still accessible from the selected car via links, so may be relevant.
For adjustment specifications, see the adjustment procedures in D - V6 ADJUSTMENTS article.