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Section 100 (Engine Controls - Sensor Operating Range Charts): Introduction

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2002 Mercury Sable, 2002 Mercury Mountaineer, 2002 Mercury Grand Marquis, 2002 Mercury Cougar, and 2002 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For sensor information on Villager, see SENSOR OPERATING RANGE CHARTS - VILLAGER . For sensor information on 7.3L diesel, see SELF-DIAGNOSTICS - EEC-V - DIESEL article.

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 minimum 10-megohm input impedance.
AIR CONDITIONING EVAPORATOR TEMPERATURE SENSOR SPECIFICATIONS (1)

Temperature - °F (°C) (2) Volts (3) Ohms
-4 (-20) 4.66 276,960
14 (-10) 4.45 160,310
32 (0) 4.14 95,850
50 (10) 3.73 58,990
68 (20) 3.26 37,340
86 (30) 2.74 24,250
104 (40) 2.23 16,110
122 (50) 1.77 10,930
140 (60) 1.37 7550
158 (70) 1.05 5340
176 (80) 0.80 3840
194 (90) 0.61 2800
212 (100) 0.47 2080
(1) Values may differ by as much as 15 percent. For additional testing, see TEST DJ: AIR CONDITIONING EVAPORATOR TEMPERATURE SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.
(2) Measure voltage by backprobing signal circuit to ground.
(3) Measure resistance between sensor terminals.
BARO SENSOR SPECIFICATIONS (1)

In. Hg kPa Frequency (Hz) Altitude (Ft.)
3.5 11.8 89.3 N/A
5 16.9 92.8 N/A
10 33.8 104.6 N/A
15 50.7 117.0 14,000
20 67.5 129.6 10,000
21 70.9 132.5 9000
22 74.3 135.4 8000
23 77.7 138.3 7000
24 81.1 141.1 6000
25 84.4 144.0 5000
26 87.8 146.9 4000
27 91.2 149.8 3000
28 94.6 152.8 2000
29 97.9 155.8 1000
(1) Using scan tool, select BARO PID from PID/DATA monitor menu. BARO PID should be within 2 in. Hg (6 Hz) of altitude value. For additional testing, see TEST DQ: BAROMETRIC PRESSURE SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.
CYLINDER HEAD TEMPERATURE SENSOR SPECIFICATIONS (1)

Temperature - °F (°C) Cold End Volts Hot End Volts (2) Ohms
-40 (-40) 4.89 N/A 965,808
-22 (-30) 4.81 N/A 513,019
-4 (-20) 4.67 N/A 283,664
14 (-10) 4.45 N/A 162,584
32 (0) 4.14 N/A 96,255
50 (10) 3.73 N/A 59,175
68 (20) 3.26 N/A 37,387
86 (30) 2.74 N/A 24,215
104 (40) 2.23 N/A 16,043
122 (50) 1.76 N/A 10,850
140 (60) 1.36 N/A 7487
158 (70) 1.04 N/A 5268
176 (80) (3) .79 3.99 3775
185 (85) (3) .69 3.86 3215
194 (90) (3) .60 3.71 2750
203 (95) (3) .53 3.56 2361
212 (100) (3) .46 3.41 2034
230 (110) N/A 3.07 1523
248 (120) N/A 2.74 1155
266 (130) N/A 2.41 887
284 (140) N/A 2.10 689
302 (150) N/A 1.81 542
320 (160) N/A 1.55 430
338 (170) N/A 1.33 345
356 (180) N/A 1.13 279
374 (190) N/A .96 228
392 (200) N/A .82 188
410 (210) N/A .70 155
428 (220) N/A .60 130
446 (230) N/A .51 109
464 (240) N/A .44 92
482 (250) N/A .35 78
500 (260) N/A .33 67
(1) Value may vary by 15 percent. For additional testing, see TEST DL: CYLINDER HEAD TEMPERATURE SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.
(2) Measure resistance between cylinder head temperature sensor terminals.
(3) At this temperature, there is a voltage overlap zone where it is possible to have either a cold end (low voltage) or hot end (high voltage) reading at the same temperature. Either voltage specification listed is correct.
ENGINE COOLANT TEMPERATURE SENSOR, INTAKE AIR TEMPERATURE SENSOR & ENGINE OIL TEMPERATURE SENSOR SPECIFICATIONS (1)

Temperature - °F (°C) (2)(3) Volts (2)(4) Volts (5) Ohms
14 (-10) 4.45 4.15 160,310
32 (0) 4.14 3.91 95,850
50 (10) 3.73 3.51 58,750
68 (20) 3.26 3.07 37,300
86 (30) 2.74 2.60 24,270
104 (40) 2.23 2.13 16,150
122 (50) 1.77 1.70 10,970
140 (60) 1.37 1.33 7600
158 (70) 1.05 1.02 5370
176 (80) 0.80 0.78 3840
194 (90) 0.61 0.60 2800
212 (100) 0.47 0.46 2070
230 (110) 0.36 0.35 1550
248 (120) 0.28 0.27 1180
(1) Values may differ by as much as 15 percent. For additional testing, see TEST DA: TEMPERATURE SENSOR TEST (IAT, ECT & EOT) under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.
(2) Measure voltage by backprobing signal circuit to ground.
(3) Applies to Focus models only.
(4) Applies to all models, except Focus.
(5) Measure resistance between sensor terminals.
ENGINE FUEL TEMPERATURE SENSOR SPECIFICATIONS (1)

Temperature - °F (°C) (2) Volts (3) Ohms
-40 (-40) 4.54 92,500
50 (10) 3.51 58,750
68 (20) 3.07 27,300
86 (30) 2.60 24,270
104 (40) 2.13 16,150
122 (50) 1.70 10,970
140 (60) 1.33 7700
158 (70) 1.02 5370
176 (80) 0.78 3840
194 (90) 0.60 2800
212 (100) 0.46 2070
230 (110) 0.35 1550
248 (120) 0.27 1180
275 (135) 0.19 810
302 (150) 0.13 560
(1) Values may differ by as much as 15 percent. For additional testing, see TEST DB: ENGINE FUEL TEMPERATURE SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.
(2) Measure by backprobing signal circuit to ground.
(3) Measure resistance between sensor terminals.
FUEL RAIL PRESSURE SENSOR VOLTAGE-TO-FUEL PRESSURE CONVERSION

Volts (1) Pressure - psi (kPa)
Natural Gas Vehicles
4.5 150 (1034)
4.1 140 (965)
3.7 130 (896)
3.3 120 (827)
2.9 110 (758)
2.5 100 (689)
2.1 90 (620)
1.7 80 (551)
1.3 70 (482)
0.9 60 (413)
0.5 50 (344)
0.1 40 (275)
0.0 37.6 (259)
Except Natural Gas Vehicles
4.5 70 (482)
3.9 60 (413)
3.4 50 (344)
2.8 40 (275)
2.2 30 (207)
1.6 20 (138)
1.1 10 (69)
0.5 0.0 (0.0)
(1) For additional testing, see TEST DD: FUEL RAIL PRESSURE SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.
INTAKE AIR TEMPERATURE 2 SENSOR SPECIFICATIONS (1)

Temperature - °F (°C) (2) Volts (3) Ohms
50 (10) 3.51 58,750
68 (20) 3.07 37,300
86 (30) 2.60 24,270
104 (40) 2.13 16,150
122 (50) 1.70 10,970
140 (60) 1.33 7600
158 (70) 1.02 5370
176 (80) 0.78 3840
194 (90) 0.60 2800
212 (100) 0.46 2070
230 (110) 0.35 1550
248 (120) 0.27 1180
(1) Values may differ by as much as 15 percent. For additional testing, see TEST DU: INTAKE AIR TEMPERATURE 2 under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.
(2) Measure voltage by backprobing signal circuit to ground.
(3) Measure resistance between sensor terminals.
MASS AIRFLOW SENSOR

Barometric Pressure - In. Hg (kPa) BARO/MAP PID (Hz) Altitude
3.5 (11.8) 89.3 N/A
5.0 (16.9) 92.8 N/A
10.0 (33.8) 104.6 N/A
15.0 (50.7) 117.0 14,000
20.0 (67.5) 129.6 10,000
21.0 (70.90 132.5 9000
22.0 (74.3) 135.4 8000
23.0 (77.7) 138.3 7000
24.0 (81.1) 141.1 6000
25.0 (84.4) 144.0 5000
26.0 (87.8) 146.9 4000
27.0 (91.2) 149.8 3000
28.0 (94.6) 152.8 2000
29.0 (97.9) 155.8 1000
30.0 (101.3) 158.9 0 (Sea Level)
31.0 (104.7) 162.0 N/A
31.875 (107.70 164.7 N/A
Fig 1: Throttle Position Sensor Specifications
G00264185Courtesy of FORD MOTOR CO.
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