Pinpoint Test DN: Pressure And Temperature Sensors: Introduction: Notes

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 Lincoln Navigator, 2015 Lincoln MKZ, 2015 Lincoln MKX, 2015 Lincoln MKT, and 2015 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: Pressure And Temperature Sensor Voltage 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	A	4 3	SIGRTN IAT2
Edge 2.7L, Expedition, F-150 2.7L, Navigator, Transit	B	4 1	SIGRTN IAT2
Fiesta, MKC, Mustang	A	1 2	SIGRTN IAT2
All other vehicles	B	4 3	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, Explorer 2.0L, 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