Park/Neutral Position (PNP) Switch
- If PNP switch is out of adjustment, voltage signals may not be correctly applied to ECM, causing a trouble code to set. Before assuming PNP switch is faulty, adjust PNP switch. See PARK/NEUTRAL POSITION (PNP) SWITCH under MISCELLANEOUS CONTROLS in appropriate ADJUSTMENTS
article.
- After switch adjustment is completed, recheck for trouble code. If trouble code does not reset, PNP switch is okay. If trouble code 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. |
| P |
2 & 3; 1 & 9 |
| R |
4 & 9 |
| N |
2 & 3; 6 & 9 |
| D |
5 & 9 |
| 2 |
7 & 9 |
| L |
8 & 9 |
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- If PNP switch is out of adjustment, voltage signals may not be correctly applied to ECM, causing a trouble code to set. Before assuming PNP switch is faulty, adjust PNP switch. See PARK/NEUTRAL POSITION (PNP) SWITCH under MISCELLANEOUS CONTROLS in appropriate ADJUSTMENTS
article. Recheck resistance. If resistance is still not as specified, replace TP sensor.
TP SENSOR RESISTANCE
| Application & Throttle Plate Position |
TP Sensor Terminals |
Ohm Reading |
| Throttle Fully Closed |
VTA1 & E2 |
340-6300 |
| .016" (.40 mm) |
IDL1 & E2 |
500 Or Less |
| * |
IDL1 & E2 |
Infinite (Open) |
| Throttle Fully Open |
VTA1 & E2 |
2400-11,200 |
| All Positions |
VC & E2 |
3100-7200 |