Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2002 Lincoln Town Car, 2002 Lincoln Navigator, 2002 Lincoln LS, 2002 Lincoln Continental, and 2002 Lincoln Blackwood. However, it is still accessible from the selected car via links, so may be relevant.
Perform this test only when directed by QUICK TEST. EFT sensor will operate within the range of -40 to 275°F (-40 to 135°C). This system test is intended to diagnose the following components and circuits:
- EFT Sensor
- Wiring Harness Circuits (EFT & SIG RTN)
- Powertrain Control Module (PCM)
EFT SENSOR SPECIFICATIONS (1)
| Temperature °F (°C) | Volts | k/Ohms | ||
|---|---|---|---|---|
| -40 (-40) | 4.54 | 92.50 | ||
| 50 (10) | 3.51 | 58.75 | ||
| 68 (20) | 3.07 | 27.30 | ||
| 86 (30) | 2.60 | 24.27 | ||
| 104 (40) | 2.13 | 16.15 | ||
| 122 (50) | 1.70 | 10.97 | ||
| 140 (60) | 1.33 | 7.70 | ||
| 158 (70) | 1.02 | 5.37 | ||
| 176 (80) | 0.78 | 3.84 | ||
| 194 (90) | 0.60 | 2.80 | ||
| 212 (100) | 0.46 | 2.07 | ||
| 230 (110) | 0.35 | 1.55 | ||
| 248 (120) | 0.27 | 1.18 | ||
| 275 (135) | 0.19 | .81 | ||
| 302 (150) | 0.13 | .56 | ||
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NOTE:
Fuel Rail Pressure (FRP) sensor may also be known as Injection Pressure (IP) sensor. Engine Fuel Temperature (EFT) sensor may also be known as Fuel Rail Temperature (FRT) sensor.