Pinpoint Test DN: Pressure And Temperature Sensors: 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:

intake air temperature 2 (IAT2) sensor (12A697)
manifold absolute pressure (MAP)/charge air cooler temperature (CACT) sensor (9F479)
manifold absolute pressure (MAP)/intake air temperature 2 (IAT2) sensor (9F479)
turbocharger boost pressure (TCBP)/charge air cooler temperature (CACT) sensor (9F479)
harness circuits: IAT2, CACT, SIGRTN and VREF
PCM (12A650)

Voltage values calculated for VREF equals 5 volts. These values can vary by 15% due to sensor and VREF variations.

Fig 1: Pressure And Temperature Sensors Voltage Graph

Courtesy of FORD MOTOR CO.

TEMPERATURE SENSOR VOLTAGE AND RESISTANCE SPECIFICATIONS

Temperature		Temperature Sensor Values
°C	°F	Resistance (K ohms)
120	248	1.18
110	230	1.55
100	212	2.07
90	194	2.80
80	176	3.84
70	158	5.37
60	140	7.70
50	122	10.97
40	104	16.15
30	86	24.27
20	68	37.30
10	50	58.75
0	32	95.85
-10	14	160.31

Fig 2: Intake Air Temperature 2 (IAT2) Sensor Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	SIGRTN (Signal Return)
1	IAT2 (Intake Air Temperature 2)

Fig 3: Manifold Absolute Pressure/Charge Air Cooler Temperature (MAP/CACT) Sensor Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
1	SIGRTN (Signal Return)
2	CACT (Charge Air Cooler Temperature)

Fig 4: Manifold Absolute Pressure/Intake Air Temperature 2 (MAP/IAT2) Sensor Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Continental 2.0L, EcoSport, Escape/Kuga, Fiesta, MKC, Mustang	A	1 2	SIGRTN IAT2
Edge 2.7L, F-150 2.7L, MKX 2.7L, Transit	B	4 1	SIGRTN IAT2
Edge 2.0L, MKX 2.0L, MKZ	A	4 3	SIGRTN IAT2
Explorer 2.3L	B	2 3	SIGRTN IAT2
Explorer 3.5L, Flex, MKT, Taurus	B	4 3	SIGRTN IAT2
All other vehicles	A	4 1	SIGRTN IAT2

Fig 5: Turbocharger Boost Pressure/Charge Air Cooler Temperature (TCBP/CACT) Sensor Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Fiesta, Fusion 2.0L, MKC, MKZ 2.0L, Taurus 2.0L	A	1 2	SIGRTN CACT
Focus, MKT 2.0L	B	1 2	SIGRTN CACT
All other vehicles	C	4 3	SIGRTN CACT

Powertrain Control Module (PCM) Connector

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

Vehicle	Connector	Pin	Circuit
Continental 2.7L, Continental 3.0L, Fusion 2.7L, Transit	198 PIN	B18 B32 E20 E33	SIGRTN CACT SIGRTN IAT2
EcoSport 1.0L Automatic Transmission	198 PIN	E20 B75	SIGRTN IAT2
EcoSport 1.0L Manual Transmission	198 PIN	E19 B32	SIGRTN IAT2
Edge 2.7L	198 PIN	B18, B7 B32 E20 E33	SIGRTN CACT SIGRTN IAT2
Escape/Kuga 1.5L	198 PIN	E13 E30 E14 E44	SIGRTN CACT SIGRTN IAT2
Expedition, F-150 3.5L, Navigator	198 PIN	B30 B35 E10 E52	SIGRTN CACT SIGRTN IAT2
Explorer GTDI 3.5L, Flex, MKT 3.5L, MKX 2.7L, MKZ 3.0L, Taurus GTDI 3.5L	198 PIN	B18 B32 E20 E34	SIGRTN CACT SIGRTN IAT2
F-150 2.7L	306 PIN	E121 B32 E13 E50 E13	SIGRTN CACT SIGRTN IAT2 SIGRTN
Fiesta 1.0L	198 PIN	E19 B32	SIGRTN CACT
Fiesta GTDI 1.6L, Fusion 2.0L, MKZ 2.0L	198 PIN	B19 B32	SIGRTN CACT
Focus 1.0L, Focus GTDI 2.0L, MKT 2.0L, Taurus 2.0L	198 PIN	B18 B32	SIGRTN CACT
Ford GT	198 PIN	E20 B53 E20 E34	SIGRTN CACT SIGRTN IAT2
Fusion 1.5L	198 PIN	E20 B32 E20 E34	SIGRTN CACT SIGRTN IAT2
MKC 2.0L	198 PIN	B18 B32 E20 E34 E20	SIGRTN CACT SIGRTN IAT2 SIGRTN
Mustang	198 PIN	E20 E52	SIGRTN IAT2
All other vehicles	198 PIN	E20 E34	SIGRTN IAT2