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Pinpoint Test Fa: Ambient Air Temperature (AAT) Sensor: Introduction

This pinpoint test is intended to diagnose the following:

Ambient Air Temperature (AAT) Sensor Expected Values 

Temperature AAT Sensor Values
°C °F Resistance (K ohms)
-1.1 to 4.4 30 to 40 8.14 to 9.85 (Focus), 27.49 to 33.47 (All Others)
4.4 to 10 40 to 50 6.01 to 8.14 (Focus), 22.06 to 28.86 (All Others)
10 to 15.6 50 to 60 4.90 to 6.01 (Focus), 16.63 to 23.10 (All Others)
15.6 to 21.1 60 to 70 3.79 to 4.90 (Focus), 11.74 to 17.32 (All Others)
21.1 to 26.7 70 to 80 2.86 to 3.79 (Focus), 9.34 to 12.14 (All Others)
26.7 to 32.2 80 to 90 2.34 to 2.86 (Focus), 8.49 to 9.62 (All Others)
32.2 to 37.8 90 to 100 1.81 to 2.34 (Focus), 5.93 to 7.87 (All Others)
37.8 to 43.3 100 to 110 1.43 to 1.82 (Focus), 4.78 to 6.11 (All Others)
Fig 1: Ambient Air Temperature (AAT) Sensor Connector
G11848443Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
EcoSport A 1
2		 SIGRTN
AAT
F-Series Super Duty B 2
1		 SIGRTN
AAT
Transit A 2
1		 SIGRTN
AAT
All other vehicles C 2
1		 SIGRTN
AAT
Fig 2: Right Exterior Rear View Mirror Assembly Connector
G09956964Courtesy of FORD MOTOR CO.
Pin Circuit
10 SIGRTN (Signal Return)
9 AAT (Ambient Air Temperature)
Fig 3: Instrument Panel Cluster (IPC) Connector
G07431384Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
EcoSport A 27
24		 SIGRTN
AAT
All other vehicles A 19
20		 SIGRTN
AAT

Powertrain Control Module (PCM) Connector 

For PCM connector views or reference values, refer to REFERENCE VALUES .

Vehicle Connector Pin Circuit
Continental 3.7L,
Edge 3.5L,
Explorer TiVCT 3.5L,
Explorer 3.7L,
F-150 TiVCT 3.5L,
F-150 5.0L,
F-Series Super Duty,
Flex TiVCT 3.5L,
MKT 3.7L,
MKX 3.7L,
Mustang 3.7L,
Mustang 5.0L,
Mustang 5.2L,
Taurus TiVCT 3.5L,
Taurus 3.7L,
Transit 3.7L		 198 PIN B51
B47		 SIGRTN
AAT
Escape/Kuga 1.5L 198 PIN B24
B72		 SIGRTN
AAT
Escape/Kuga 2.5L,
Transit Connect		 198 PIN B30
B47		 SIGRTN
AAT
F-150 GTDI 3.5L 198 PIN B30
B51		 SIGRTN
AAT
Focus GDI 2.0L 154 PIN B34
B35		 SIGRTN
AAT
Fusion 2.5L 198 PIN B33
B47		 SIGRTN
AAT
KA 128 PIN T20
T2		 SIGRTN
AAT
All other vehicles 198 PIN B18
B51		 SIGRTN
AAT
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