PINPOINT TEST DA: Intake Air Temperature (IAT) Sensor: Introduction
WARNING: This page does not describe the selected car, but rather 22 other vehicles, including the 2011 Mercury Milan, 2011 Mercury Mariner, 2011 Mercury Grand Marquis, 2011 Lincoln Town Car, and 2011 Lincoln Navigator L. However, it is still accessible from the selected car via links, so may be relevant.
This pinpoint test is intended to diagnose the following:
- IAT sensor (12A697)
- integrated mass air flow/intake air temperature (MAF/IAT) sensor (12B579)
- harness circuits: IAT and SIGRTN
- powertrain control module (PCM) (12A650)
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to REFERENCE VALUES .
POWERTRAIN CONTROL MODULE CONNECTOR PINS REFERENCE CHART
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Crown Victoria, E-Series 6.8L, Grand Marquis, Ranger, Town Car | 170 PIN | E26 E22 |
MAF RTN IAT |
| F-150 6.2L, F-150 5.0L | 190-PIN | B2 B47 |
MAF RTN IAT |
| F-150 3.5L | 198 PIN | B9 B75 |
SIGRTN IAT |
| F-Series Super Duty, Mustang 5.4L, Mustang 5.0L |
190-PIN | B2 B47 |
SIGRTN IAT |
| Fiesta | 128 PIN | E1 E26 |
MAF RTN IAT |
| Flex 4V 3.5L, MKS 3.7L, MKT 3.7L, Taurus 4V 3.5L | 190-PIN | B42 B43 |
MAF RTN IAT |
| Flex GTDI 3.5L, MKS 3.5L, MKT 3.5L, Taurus GTDI 3.5L | 190-PIN | B47 | IAT |
| Fusion 3.5L, MKZ | 140 PIN | B42 B43 |
MAF RTN IAT |
| Mustang 3.7L | 190-PIN | B41 B47 |
SIGRTN IAT |
| All other vehicles | 190-PIN | B41 B47 |
MAF RTN IAT |