Throttle Position Sensor - 4.9L
- Turn ignition off. Disable alternator by grounding Green harness connector plug adjacent to alternator. Turn ignition on, engine off. Enter diagnostic mode, and select PCM override PS03 (ISC motor). See appropriate G - TESTS W/ CODES article in this section.
- Press COOLER button to retract ISC motor to minimum air setting. Loosen TP sensor screws enough to permit sensor rotation. Open throttle slightly, and allow throttle lever to snap shut against minimum air screw.
- Adjust TP sensor so parameter display is zero degrees. Tighten TP sensor mounting screws. Recheck parameter and ensure TP sensor parameter is within .5 degrees of reading.
THROTTLE POSITION TP SENSOR ADJUSTMENT VOLTAGE
| Application |
Volts |
| 4.9L |
.50-5.00 |
| 5.0L |
.20-5.00 |
| 5.7L |
| VIN P |
.60-5.00 |
| VIN 7 |
.20-5.00 |