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Engine Controls - Sensor Operating Range Charts Ford Explorer I

Sensor Range Charts ~156 words

INTRODUCTION

Note. Unless otherwise specified, references to Pickup include the F350 Super Duty commercial chassis.

Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it will cause driveability problems.

Note. Unless specified otherwise, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.

AIR CHARGE TEMP (ACT) & ENGINE COOLANT TEMP (ECT) SENSORS

Temperature: °F (°C)(1) VoltsOhms
50 (10)3.5158,700
68 (20)3.0737,300
86 (30)2.6024,200
104 (40)2.1316,150
122 (50)1.7010,970
140 (60)1.337700
158 (70)1.045370
176 (80)0.783840
194 (90)0.602800
212 (100)0.462007
(1) Voltage calculations are based on a Voltage Reference (VREF) of 5 volts. Actual values may vary by as much as 15 percent due to sensor and VREF variations.
(1)Voltage calculations are based on a Voltage Reference (VREF) of 5 volts. Actual values may vary by as much as 15 percent due to sensor and VREF variations.

ACT & ECT SENSORS SPECIFICATIONS

EGR VALVE POSITION (EVP) SENSOR

EGR Valve Opening (%)(1) Volts
00.40
100.75
201.10
301.45
401.80
502.15
602.50
702.85
803.20
903.55
1003.90
(1) Voltage calculations are based on a Voltage Reference (VREF) of 5 volts. Actual values may vary by as much as 15 percent due to sensor and VREF variations.
(1)Voltage calculations are based on a Voltage Reference (VREF) of 5 volts. Actual values may vary by as much as 15 percent due to sensor and VREF variations.

EVP SENSOR VOLTAGE

EXHAUST GAS OXYGEN (EGO) SENSOR

Condition(1) Voltage
RichIncreases
LeanDecreases
(1) Measure between oxygen sensor connector and ground. Range should be 0.2-0.8 volt.
(1)Measure between oxygen sensor connector and ground. Range should be 0.2-0.8 volt.

EGO SENSOR VOLTAGE

MASS AIRFLOW (MAF) SENSOR

Engine Condition (1)(2) Volts
Idle0.8
20 MPH1.0
40 MPH1.7
60 MPH2.1
(1) Engine at normal operating temperature. (2) Voltage may vary depending on engine load and temperature.
(1)Engine at normal operating temperature.
(2)Voltage may vary depending on engine load and temperature.

MAF SENSOR VOLTAGE

MANIFOLD ABSOLUTE PRESSURE/BAROMETRIC PRESSURE (MAP/BP)

SENSOR

Barometric Pressure (In. Hg)(1) Frequency (Hz)
17.1122.4
18.3125.5
19.5128.7
20.7131.9
21.8135.1
23.0138.3
24.2141.8
25.4145.4
26.6148.9
27.7152.5
28.9156.1
30.1159.6
31.0162.4
(1) Values may vary by as much as 6 Hz.
(1)Values may vary by as much as 6 Hz.

MAP/BP FREQUENCY (BAROMETRIC PRESSURE)

Manifold Vacuum (In. Hg)(2) Frequency (Hz)
0159
3150
6141
9133
12125
15117
18109
21102
2495
2788
3080
(1) Based on barometric pressure of 30.0 in. Hg. (2) Values may vary by as much as 6 Hz.
(1)Based on barometric pressure of 30.0 in. Hg.
(2)Values may vary by as much as 6 Hz.

MAP/BP FREQUENCY (MANIFOLD VACUUM) (1)

Elevation (Feet)Volts
01.55-1.63
10001.52-1.60
20001.49-1.57
30001.46-1.54
40001.43-1.51
50001.40-1.48
60001.37-1.45
70001.35-1.43

MAP/BP VOLTAGE (ELEVATION)

MANUAL LEVER POSITION (MLP) SENSOR

Position(1) Volts(1) Ohms
P4.414160
R3.601440
N2.83733
D2.09401
21.37211
10.6881
(1) Values may vary by as much as 15 percent.
(1)Values may vary by as much as 15 percent.

MLP SENSOR SPECIFICATIONS

PRESSURE FEEDBACK EGR (PFE) SENSOR

Psi (1)Volts
0.463.63
0.914.00
1.364.38
1.82 psi4.75
In. Hg (2)Volts
03.25
5.01.22
7.40.25
(1) To avoid sensor damage, DO NOT exceed 1.82 psi. Hg during testing. (2) To avoid sensor damage, DO NOT exceed 7.4 in. Hg during testing.
(1)To avoid sensor damage, DO NOT exceed 1.82 psi. Hg during testing.
(2)To avoid sensor damage, DO NOT exceed 7.4 in. Hg during testing.

PFE SENSOR VOLTAGE

THROTTLE POSITION SENSOR (TPS)

Throttle Angle(1) Volts
0°0.50
10°0.97
20°1.44
30°1.90
40°2.37
50°2.84
60°3.31
70°3.78
80°4.24
(1) Voltage may vary by as much as 15 percent.
(1)Voltage may vary by as much as 15 percent.

TPS VOLTAGE

TRANSMISSION OIL TEMPERATURE (TOT) SENSOR

Temperature: °F (°C)(1) Volts(1) Ohms
50 (10)3.5258,750
68 (20)3.0637,300
86 (30)2.6224,270
104 (40)2.1616,150
122 (50)1.7210,970
140 (60)1.357600
158 (70)1.045370
176 (80)0.803840
194 (90)0.612800
212 (100)0.472070
230 (110)0.361550
248 (120)0.281180
(1) Values may vary by as much as 15 percent.
(1)Values may vary by as much as 15 percent.

TOT SENSOR SPECIFICATIONS