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

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2016 Lincoln Navigator, 2016 Lincoln MKZ, 2016 Lincoln MKX, 2016 Lincoln MKT, and 2016 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.

This pinpoint test is intended to diagnose the following:

AMBIENT AIR TEMPERATURE (AAT) SENSOR SPECIFICATIONS

Temperature AAT Sensor Values
°C °F Resistance (K ohms)
-40 -40 9.72 to 9.95 (Focus), 9.80 (Transit Connect), 314.21 to 351.34 (All Others)
-35 -31 9.36 to 9.60 (Focus), 9.45 (Transit Connect), 217.37 to 237.85 (All Others)
-30 -22 9.93 to 9.16 (Focus), 9.02 (Transit Connect), 169.57 to 184.43 (All Others)
-25 -13 8.41 to 8.64 (Focus), 8.51 (Transit Connect)
-20 4 7.83 to 8.05 (Focus), 7.93 (Transit Connect), 93.81 to 100.31 (All Others)
-15 5 7.18 to 7.39 (Focus), 7.29 (Transit Connect), 83.65 to 89.27 (All Others)
-10 14 6.50 to 6.68 (Focus), 6.59 (Transit Connect)
-05 23 5.80 to 5.96 (Focus), 5.88 (Transit Connect)
0 32 5.10 to 5.25 (Focus), 5.18 (Transit Connect), 31.84 to 33.47 (All Others)
5 41 4.44 to 4.56 (Focus), 4.50 (Transit Connect)
10 50 3.82 to 3.92 (Focus), 3.84 (Transit Connect)
15 59 3.27 to 3.34 (Focus), 3.30 (Transit Connect)
20 68 2.77 to 2.83 (Focus), 2.79 (Transit Connect), 12.28 to 12.71 (All Others)
25 77 2.34 to 2.39 (Focus), 2.35 (Transit Connect), 9.85 to 10.15 (All Others)
30 86 1.97 to 2.01 (Focus), 1.98 (Transit Connect)
35 95 1.65 to 1.69 (Focus), 1.66 (Transit Connect)
40 104 1.38 to 1.42 (Focus), 1.39 (Transit Connect), 5.25 to 5.41 (All Others)
50 122 0.97 to 1.00 (Focus), 0.98 (Transit Connect), 2.45 to 2.53 (All Others)
60 140 0.69 to 0.72 (Focus), 0.70 (Transit Connect)
Fig 1: Identifying Ambient Air Temperature (AAT) Sensor Connector
G10766409Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
EcoSport A 1
2		 SIGRTN
AAT
Transit A 2
1		 SIGRTN
AAT
All other vehicles B 2
1		 SIGRTN
AAT
Fig 2: Identifying 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: Identifying 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
Edge 3.5L,
Explorer TiVCT 3.5L,
Explorer 3.7L,
F-150 TiVCT 3.5L,
F-150 5.0L,
Flex TiVCT 3.5L,
MKS 3.7L,
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 2.5L,
F-Series Super Duty,
Fusion 2.5L,
MKZ 3.7L		 190-PIN B56
B17		 SIGRTN
AAT
Focus GDI 2.0L 154 PIN B34
B35		 SIGRTN
AAT
KA 128 PIN T20
T2		 SIGRTN
AAT
Transit Connect 2.5L 198 PIN B30
B47		 SIGRTN
AAT
All other vehicles 198 PIN B18
B51		 SIGRTN
AAT
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