Fuel Tank Pressure Sensor
NOTE:
Only component testing procedure is covered. For Fuel Tank Pressure (FTP) sensor system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.
NOTE:
For FTP sensor removal and installation, see appropriate FUEL TANK PRESSURE SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.
NOTE:
On Spectra, component testing procedure does not apply (not equip).
Vent fuel tank by removing fuel filler cap. Ensure ignition is off. Locate FTP sensor 3-pin harness connector under rear seat, through fuel pump assembly access panel on vehicle floor (except Optima & Magentis (Canadian)). For Optima & Magentis (Canadian) remove fuel pump access cover in trunk. Disconnect FTP sensor harness connector. Check resistance between FTP sensor connector terminals. See Fig 1. See FUEL TANK PRESSURE SENSOR RESISTANCE SPECIFICATIONS table. If FTP sensor is not as specified, replace FTP sensor.
FUEL TANK PRESSURE SENSOR RESISTANCE SPECIFICATIONS
| Application | K/ohms | |
|---|---|---|
| Optima & Magentis (Canadian) | ||
| Sensor Terminals 1 & 2 | 5-6 | |
| Sensor Terminals 1 & 3 | 5-6 | |
| Sensor Terminals 2 & 3 | 2.5-3 | |
| Rio, Sedona & Sportage | ||
| Sensor Terminals 1 & 2 | 2.5-3 | |
| Sensor Terminals 1 & 3 | 5-6 | |
| Sensor Terminals 2 & 3 | 5-6 | |