Pinpoint Test DN: Pressure And Temperature Sensors: 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:

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: IAT2 Sensor Temperature Graph

Courtesy of FORD MOTOR CO.

TEMPERATURE SENSOR VOLTAGE AND RESISTANCE SPECIFICATIONS

Temperature		Temperature Sensor Values
°C	°F	Voltage	Resistance (K ohms)
120	248	0.28	1.18
110	230	0.36	1.55
100	212	0.47	2.07
90	194	0.61	2.80
80	176	0.80	3.84
70	158	1.05	5.37
60	140	1.37	7.70
50	122	1.77	10.97
40	104	2.23	16.15
30	86	2.74	24.27
20	68	3.26	37.30
10	50	3.73	58.75
0	32	4.14	95.85
-10	14	4.45	160.31

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

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Edge 2.0L, MKX 2.0L	A	4 3	SIGRTN IAT2
Explorer 2.3L	B	2 3	SIGRTN IAT2
Explorer 3.5L, F-150 3.5L, Flex, MKS, MKT, Taurus	B	4 3	SIGRTN IAT2
Fiesta, MKC, Mustang	A	1 2	SIGRTN IAT2
All other vehicles	B	4 1	SIGRTN IAT2

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

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Escape/Kuga, Focus, MKT 2.0L	A	1 2	SIGRTN CACT
Expedition, Navigator	B	1 2	SIGRTN CACT
Fiesta, Fusion, MKC, MKZ, Taurus 2.0L, Transit Connect	C	1 2	SIGRTN CACT
All other vehicles	B	4 3	SIGRTN CACT

Powertrain Control Module (PCM) Connector

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

Vehicle	Connector	Pin	Circuit
EcoSport 2.0L Manual Transmission, EcoSport 1.6L	80 PIN	E25	SIGRTN
EcoSport 2.0L Automatic Transmission	128 PIN	E43	SIGRTN
Edge 2.0L	198 PIN	B18, B7 E20 E34	SIGRTN SIGRTN IAT2
Edge 2.7L	198 PIN	B18, B7 E20 E33 B32	SIGRTN SIGRTN IAT2 CACT
Escape/Kuga 1.6L, Escape/Kuga 2.0L, Fusion 2.0L, MKZ, Transit Connect 1.6L	198 PIN	B19 E20 B32	SIGRTN SIGRTN CACT
Escape/Kuga 2.5L, Fusion 2.5L	190-PIN	E49	SIGRTN
Expedition, F-150 2.7L, F-150 GTDI 3.5L, Navigator, Transit 3.5L	198 PIN	B18 E20 E33 B32	SIGRTN SIGRTN IAT2 CACT
Explorer 2.3L, Focus 2.3L, MKC 2.3L, MKX 2.0L, Mustang 2.3L	198 PIN	B18 E20 E34	SIGRTN SIGRTN IAT2
Explorer GTDI 3.5L, Flex GTDI 3.5L, MKS 3.5L, MKT 3.5L, MKX 2.7L, Taurus GTDI 3.5L	198 PIN	B18 E20 E34 B32	SIGRTN SIGRTN IAT2 CACT
Fiesta GTDI 1.6L, Fiesta 1.0L, Focus 1.0L	198 PIN	B19 E19 B32	SIGRTN SIGRTN CACT
Fiesta TiVCT 1.6L	128 PIN	B38	SIGRTN
Focus GTDI 2.0L, MKC 2.0L, MKT 2.0L, Taurus 2.0L	198 PIN	B18 E20 B32	SIGRTN SIGRTN CACT
Fusion 1.5L	198 PIN	E20 E20 B32 E20 E34	SIGRTN SIGRTN CACT SIGRTN IAT2
KA	128 PIN	T17	SIGRTN
Transit Connect 2.5L	198 PIN	B35	SIGRTN
All other vehicles	198 PIN	E29	SIGRTN