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Pinpoint Test DA: Intake Air Temperature (IAT) Sensor: Introduction

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2018 Lincoln Navigator, 2018 Lincoln MKZ, 2018 Lincoln MKX, 2018 Lincoln MKT, and 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.

This pinpoint test is intended to diagnose the following:

Fig 1: Intake Air Temperature (IAT) Sensor Voltage Graph
G12083712Courtesy of FORD MOTOR CO.
Fig 2: Intake Air Temperature (IAT) Sensor Connector
G12083713Courtesy of FORD MOTOR CO.
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
G12083714Courtesy of FORD MOTOR CO.
Pin Circuit
4 SIGRTN (Signal Return)
2 IAT21 (Intake Air Temperature Bank 2, Sensor 1)
Fig 4: Manifold Absolute Pressure Temperature (MAPT) Sensor Connector
G12083715Courtesy of FORD MOTOR CO.
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
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