Throttle Position (TP) Sensor
NOTE:
Vehicles with Traction Control System (TRAC) are equipped with a main TP sensor and a sub-TP sensor. The following procedure applies to main TP sensor. For sub-TP sensor, see SUB-THROTTLE POSITION (SUB-TP) SENSOR.
Disconnect TP sensor connector. Measure resistance across specified terminals of TP sensor connector. See TP SENSOR RESISTANCE table. See Figure. If resistance is not as specified, adjust TP sensor. See THROTTLE POSITION (TP) SENSOR under MISCELLANEOUS CONTROLS in appropriate ADJUSTMENTS
article.
- 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 |