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Engine Control - Sensor Operating Range Charts - Except S40 & V40: Introduction

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 may cause driveability problems.

NOTE: Perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance unless otherwise instructed in test procedure.
NOTE: A/C pressure sensor voltage for DENSO system should be about 0.7-0.9 volts with ignition key on and engine off. This is an analog signal that increases toward 5 volts as A/C pressure increases.
A/C PRESSURE SENSOR VOLTAGE SPECIFICATIONS (ME7)

A/C Pressure - psi (kPa) Volts
0 0.25
75 (517) 1
175 (1206 2
275 (1894) 3
450 (3100) 4.75
BOOST PRESSURE SENSOR SPECIFICATIONS (ME7)

Pressure - psi (kPa) Voltage
13 (90) 1.69
14.7 (101.3) 1.90
21.8 (150) 2.8
29 (200) 3.71
BRAKE PEDAL POSITION SENSOR SPECIFICATIONS

Position - In. (mm) Resistance - Ohms
0 (0) 1300-2100 (Relaxed Position)
0.78 (20) 1000-1800
1.18 (30) 900-1700
1.97 (50) 600-1400
CAMSHAFT RESET VALVE RESISTANCE

Application Ohms
Models With Variable Valve Timing 3.7
CLUTCH PEDAL POSITION SENSOR SPECIFICATIONS

Position - In. (mm) Resistance - Ohms
0 (0) 1500-2500 (Relaxed Position)
0.98 (25) 1000-2000
1.97 (50) 750-1750
3.94 (100) 500-1000
ENGINE COOLANT TEMPERATURE SENSOR SPECIFICATIONS (ME7)

Temperature - °F (°C) Voltage Resistance - Ohms
0 (0) 2.65 5740
50 (10) 2.10 3700
68 (20) 1.62 2450
104 (40) 0.92 1150
176 (80) 0.29 318
212 (100) 0.17 184
ENGINE COOLANT TEMPERATURE SENSOR VALUES (DENSO)

Temperature - °F (°C) Voltage Resistance - Ohms
32 (0) 3.96 5740
50 (10) 3.56 3700
68 (20) 3.10 2450
104 (40) 2.17 1150
176 (80) 0.87 318
212 (100) 0.55 184
ENGINE SPEED (RPM) SENSOR RESISTANCE

Application Ohms
Bosch ME 7 System 108-142
DENSO System 95-190
EVAP CANISTER PURGE VALVE RESISTANCE

Application Ohms
Bosch ME 7 System (1) 29.7 +/- 1.4
DENSO System (2)
(1) Measured at 68°F (20°C).
(2) Information is not available from manufacturer.
EVAP CANISTER PURGE VALVE RESISTANCE

Application Ohms
Bosch ME 7 System 17 +/- 1
DENSO System (1)
(1) Information is not available from manufacturer.
FUEL INJECTOR RESISTANCE (ME7) (1)

Application Ohms
All Models 12
(1) Measured at 68°F (20°C).
NOTE: Information on fuel injector resistance for DENSO system is not available from manufacturer.
FUEL TANK PRESSURE SENSOR SPECIFICATIONS

Pressure - psi (kPa) Voltage
-.29 (-2.0) 1.70
-.21 (-1.5) 2.10
0 (0) 3.30
.07 (.5) 3.70
HEATED OXYGEN SENSOR HEATER RESISTANCE

Application Ohms
Bosch ME 7 System (1)
Front Heated Oxygen Sensor Preheating 3
Rear Heated Oxygen Sensor Preheating 10
DENSO System (2)
(1) Measured at 68°F (20°C).
(2) Information is not available from manufacturer.
INTAKE AIR TEMPERATURE SENSOR SPECIFICATIONS (ME7)

Temperature - °F (°C) Voltage Resistance - Ohms
0 (0) 4.30 15,931
50 (10) 3.94 9672
68 (20) 3.50 6068
86 (30) 3.0 3923
104 (40) 2.5 2603
INTAKE AIR TEMPERATURE SENSOR SPECIFICATIONS (DENSO)

Temperature - °F (°C) Voltage Resistance - Ohms
32 (0) 1.55 6000
50 (10) 2.01 4000
68 (20) 2.62 2450
77 (25) 2.13 2000
86 (30) 2.00 1800
KNOCK SENSOR (KS) RESISTANCE

Application Ohms
Bosch ME 7 System (1)
DENSO System 200,000
(1) Information is not available.
MAP SENSOR VALUES (DENSO)

PSI (kPa) Voltage
14.6 (101.3) 3.64
13.05 (90) 3.3
10.15 (70) 2.7
7.25 (50) 2.1
MASS AIR FLOW SENSOR SPECIFICATIONS (ME7)

Air Mass - kg/H (1) Volts
12.0 1.31
15.0 1.39
30.0 1.69
60.0 2.11
(1) Value read from scan tool.
MASS AIR FLOW SENSOR VALUES (DENSO)

Air Mass (grams/sec. @ RPM) (1) Volts
3.3 @ 850 1.33
5.7 @ 1500 1.57
7.3 @ 2000 1.69
9.3 @ 2500 1.82
(1) Air mass is given with unloaded engine at normal operating temperature. The values should be regarded as approximate.
OUTSIDE TEMPERATURE SENSOR SPECIFICATIONS (BOSCH ME7)

Temperature - °F (°C) Voltage Resistance - Ohms
0 (0) 2.92 1407
50 (10) 2.39 912.8
68 (20) 1.89 607.5
77 (25) 1.67 500
86 (30) 1.46 413.8
OUTSIDE TEMPERATURE SENSOR SPECIFICATIONS (DENSO)

Temperature - °F (°C) Voltage Resistance - Ohms
32 (0) 2.34 1407
50 (10) 1.82 912.8
68 (20) 1.38 607.5
77 (25) 1.19 500
86 (30) 1.03 413.8
TURBOCHARGER (TC) CONTROL VALVE RESISTANCE

Application Ohms
All Models 29.7
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