TP Sensor Idle Position Adjustment
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2000 Nissan Xterra, 2000 Nissan Sentra, 2000 Nissan Quest, 2000 Nissan Pathfinder, and 2000 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Faults in TP sensor circuit may set DTC P0120. To test system, see DTC P0120: THROTTLE POSITION (TP) SENSOR diagnostic procedure in appropriate SELF-DIAGNOSTICS article.
- Warm engine to normal operating temperature. Ensure ignition timing and idle speed are within specifications. See IGNITION TIMING and IDLE SPEED & MIXTURE . Ensure fast idle cam is not holding throttle open (except Sentra 2.0L). Turn ignition off.
- On Frontier (V6), Pathfinder and Xterra, disconnect vacuum hose from throttle opener. Using a hand vacuum pump, apply vacuum to throttle opener until throttle opener rod does not contact throttle drum. See Fig 1. On all models, disconnect closed TP switch harness connector.
- Check continuity between closed TP switch terminals No. 5 and 6 with specified feeler gauges installed between throttle adjusting screw and throttle drum. See FEELER GAUGE THICKNESS table. See Fig 2.
- If continuity is not as specified, loosen TP sensor mounting screws and rotate TP sensor until continuity is as specified. Open and close throttle 2 or 3 times and ensure continuity is still as specified. Erase DTCs that may be stored in PCM and/or TCM.
FEELER GAUGE THICKNESS
| Application | Continuity | No Continuity | |
|---|---|---|---|
| Altima | .010" (.25 mm) | .014" (.35 mm) | |
| Frontier, Pathfinder & Xterra | |||
| 4-Cylinder | .004" (.10 mm) | .012" (.30 mm) | |
| V6 | .012" (.30 mm) | .016" (.40 mm) | |
| Maxima | .012" (.30 mm) | .016" (.40 mm) | |
| Quest | .008" (.20 mm) | .012" (.30 mm) | |
| Sentra | |||
| 1.8L | .012" (.30 mm) | .016" (.40 mm) | |
| 2.0L | .006" (.15 mm) | .012" (.30 mm) | |