Park/Neutral Position (PNP) Switch
- If PNP switch is out of adjustment, voltage signals may not be correctly applied to ECM, causing a Diagnostic Trouble Code (DTC) to set. Before assuming PNP switch is faulty, adjust PNP switch. See PARK/NEUTRAL POSITION (PNP) SWITCH under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.
- After switch adjustment is completed, recheck for codes. If DTC does not reset, PNP switch is okay. If DTC resets, remove PNP switch. Check for continuity between specified terminals of PNP switch. See PNP SWITCH CONTINUITY table. See Fig 1. If continuity is not as specified, replace PNP switch. If continuity is as specified, install and adjust PNP switch.
PNP SWITCH CONTINUITY
| Application & Switch Position | Terminals No. |
|---|---|
| Park | 4 & 7; 5 & 6 |
| Reverse | 4 & 8 |
| Neutral | 4 & 10; 5 & 6 |
| Drive Or 4 | 4 & 9 |
| 3 | 2 & 4 |
| Low Or 2 | 3 & 4 |