Pinpoint Test DA: Intake Air Temperature (IAT) Sensor: Introduction
This pinpoint test is intended to diagnose the following:
- IAT sensor (12A697)
- integrated mass airflow/intake air temperature (MAF/IAT) sensor (12B579)
- manifold absolute pressure and temperature (MAPT) sensor (9F479)
- harness circuits: IAT and SIGRTN
- PCM (12A650)
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| E-Series, EcoSport 2.0L, Escape/Kuga 2.5L, Explorer TiVCT 3.5L, Explorer 3.7L, F-650/F-750, F-Series Super Duty, Fiesta, Focus GDI 2.0L, Ford GT, Fusion 2.5L, Mustang 5.0L, Mustang 5.2L, Transit Connect |
A | 4 2 |
SIGRTN IAT |
| KA | B | 1 2 |
SIGRTN IAT |
| Motorhome/Stripped Chassis/Step Van | A | 4 2 |
GND IAT |
| All other vehicles | C | 2 1 |
SIGRTN IAT |
Fig 3: Mass Air Flow Bank 2, Sensor 1/Intake Air Temperature Bank 2, Sensor 1 (MAF21/IAT21) Sensor Connector
| Pin | Circuit |
|---|---|
| 4 | SIGRTN (Signal Return) |
| 2 | IAT21 (Intake Air Temperature Bank 2, Sensor 1) |
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Continental, EcoSport 1.5L, Edge 3.5L, Explorer 3.5L, Explorer 3.7L, F-150 3.3L, Flex 3.5L, MKT 3.7L, MKX, Taurus 3.5L, Transit 3.7L |
A | 3 | IAT |
| Ranger | C | 3 | IAT |
| All other vehicles | B | 2 | IAT |
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to REFERENCE VALUES .
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Continental 2.0L, EcoSport 1.0L Manual Transmission, Escape/Kuga 2.0L, Focus GTDI 2.0L, Focus 2.3L, Fusion 1.5L, Fusion 2.0L, MKC, MKZ 2.0L |
198 PIN | B19 B75 |
SIGRTN IAT |
| Continental 3.7L, Edge 3.5L, F-Series Super Duty, Flex TiVCT 3.5L, MKT 3.7L, MKX 3.7L, Taurus TiVCT 3.5L, Taurus 3.7L, Transit 3.7L |
198 PIN | E29 E27 |
SIGRTN IAT |
| E-Series 6.2L | 198 PIN | B30 E27 |
SIGRTN IAT |
| E-Series 6.8L, F-650/F-750, Motorhome/Stripped Chassis/Step Van, Mustang 5.2L |
198 PIN | B54 E27 |
SIGRTN IAT |
| EcoSport 1.0L Automatic Transmission | 198 PIN | B19 B77 |
SIGRTN IAT |
| EcoSport 1.5L Automatic Transmission | 198 PIN | E35 E24 |
SIGRTN IAT |
| EcoSport 1.5L Manual Transmission | 112 PIN | E4 E20 |
SIGRTN IAT |
| EcoSport 2.0L, Fiesta 1.0L, Fiesta GTDI 1.6L |
198 PIN | B9 B75 |
SIGRTN IAT |
| Escape/Kuga 1.5L | 198 PIN | B24 B70 |
SIGRTN IAT |
| Escape/Kuga 2.5L, Fusion 2.5L, Transit Connect |
198 PIN | B54 B25 |
SIGRTN IAT |
| Expedition, F-150 3.5L, Navigator |
198 PIN | E20 B34 |
SIGRTN IAT |
| Explorer TiVCT 3.5L, Explorer 3.7L |
198 PIN | E29 B27 |
SIGRTN IAT |
| F-150 2.7L | 306 PIN | B43 B24 |
SIGRTN IAT |
| F-150 3.3L | 306 PIN | E13 E50 |
SIGRTN IAT |
| F-150 5.0L | 306 PIN | E13 E52 |
SIGRTN IAT |
| Fiesta TiVCT 1.6L, Ranger |
128 PIN | B38 E17 |
SIGRTN IAT |
| Focus 1.0L | 198 PIN | B19 B76 |
SIGRTN IAT |
| Focus GDI | 2.0L 154 | PIN E36 E10 |
SIGRTN IAT |
| Ford GT | 198 PIN | B9 B75 E32 B76 |
SIGRTN IAT SIGRTN IAT21 |
| KA | 128 PIN | T17 T10 |
SIGRTN IAT |
| Mustang 2.3L | 198 PIN | B36 B56 |
SIGRTN IAT |
| Mustang 5.0L | 306 PIN | B54 E24 |
SIGRTN IAT |
| All other vehicles | 198 PIN | B18 B75 |
SIGRTN IAT |