Pinpoint Tests Fa: Ambient Air Temperature (AAT) Sensor: Introduction
WARNING: This page does not describe the selected car, but rather 27 other vehicles, including the 2021 Lincoln Navigator, 2021 Lincoln Nautilus, 2021 Lincoln Corsair, 2021 Lincoln Aviator, and 2021 Ford Transit-350 HD. However, it is still accessible from the selected car via links, so may be relevant.
This pinpoint test is intended to diagnose the following:
- AAT sensor
- harness circuits: AAT and SIGRTN
Ambient Air Temperature (AAT) Sensor Expected Values
| Temperature | AAT Sensor Values | |
|---|---|---|
| °C | °F | Resistance (K ohms) |
| -1.1 to 4.4 | 30 to 40 | 27.49 to 33.47 |
| 4.4 to 10 | 40 to 50 | 22.06 to 28.86 |
| 10 to 15.6 | 50 to 60 | 16.63 to 23.10 |
| 15.6 to 21.1 | 60 to 70 | 11.74 to 17.32 |
| 21.1 to 26.7 | 70 to 80 | 9.34 to 12.14 |
| 26.7 to 32.2 | 80 to 90 | 8.49 to 9.62 |
| 32.2 to 37.8 | 90 to 100 | 5.93 to 7.87 |
| 37.8 to 43.3 | 100 to 110 | 4.78 to 6.11 |
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| F-150 | A | 2 1 |
SIGRTN AAT |
| F-Series Super Duty | B | 3 1 |
SIGRTN AAT |
| Ranger 2.5L | C | 1 2 |
SIGRTN AAT |
| Transit GTDI 3.5L | D | 2 1 |
SIGRTN AAT |
| All other vehicles | C | 2 1 |
SIGRTN AAT |
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to Reference Values.
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Aviator, Edge 2.7L, Explorer 3.0L, Explorer 3.3L, F-Series Super Duty, Motorhome/Stripped Chassis/Step Van, Mustang 5.0L, Mustang 5.2L Supercharged, Nautilus 2.7L, Transit | 306 PIN | B26 B84 |
SIGRTN AAT |
| Continental, EcoSport 1.0L Automatic Transmission, EcoSport 2.0L, Ford GT | 198 PIN | B18 B51 |
SIGRTN AAT |
| Corsair 2.5L, Escape/Kuga 2.5L, Mustang TiVCT 5.2L | 198 PIN | B51 B47 |
SIGRTN AAT |
| EcoSport 1.0L Manual Transmission | 198 PIN | B34 B51 |
SIGRTN AAT |
| EcoSport 1.5L Automatic Transmission, KA 1.5L Automatic Transmission | 198 PIN | B15 B47 |
SIGRTN AAT |
| EcoSport 1.5L Manual Transmission, KA 1.2L, KA 1.5L Manual Transmission | 112 PIN | B8 B20 |
SIGRTN AAT |
| Expedition High Output, Navigator High Output | 198 PIN | B30 B51 |
SIGRTN AAT |
| Expedition Base, Navigator Base | 306 PIN | B26 B24 |
SIGRTN AAT |
| F-150 | 306 PIN | B40 B36 |
SIGRTN AAT |
| F-650/F-750 | 306 PIN | B36 | AAT |
| KA 1.0L | 128 PIN | T20 T2 |
SIGRTN AAT |
| Ranger 2.5L | 128 PIN | B33 B45 |
SIGRTN AAT |
| Transit Connect 2.5L | 198 PIN | B33 B47 |
SIGRTN AAT |
| All other vehicles | 198 PIN | B36 B31 |
SIGRTN AAT |