Engine Controls - Sensor Operating Range Charts: Introduction
Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a diagnostic 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 stated otherwise in test procedure. Using an oscilloscope may provide better test results on some sensors. For oscilloscope waveforms and ECM terminal identification, see PIN VOLTAGE CHARTS article.
CAMSHAFT POSITION SENSOR RESISTANCE
| Application |
Ohms @ 68°F (20°C) |
| I30 & Maxima |
| Hitachi Sensor |
1440-1760 |
| Mitsubishi Sensor |
2090-2550 |
CAMSHAFT POSITION SENSOR VOLTAGE
| ECM Terminal No. |
Volts At Idle |
Voltage At 2000 RPM |
| Altima |
| 40 |
2.5 |
2.3-2.5 |
| 41 |
0.1-0.5 |
0.2-0.4 |
| Frontier & Xterra (2.4L) |
| 44 Or 48 |
0.2-0.5 |
0.0-0.5 |
| 49 |
2.6 |
2.5-2.6 |
| Frontier & Xterra (3.3L) & Pathfinder |
| 44 Or 48 |
0.3-0.5 |
0.3-0.5 |
| 49 |
2.5 |
2.5 |
| Maxima |
| 76 |
4.2 |
|
| Quest |
| 44 Or 48 |
0.3-0.5 |
0.3-0.5 |
| 49 |
2.5 |
2.5 |
| Sentra (1.8L) |
| Without NVIS (NATS) |
| 76 Or 85 |
3.0-4.0 |
3.0-4.0 |
| With NVIS (NATS) |
| 66 Or 75 |
3.0-4.0 |
3.0-4.0 |
| Sentra (2.0L) |
| Without NVIS (NATS) |
| 76 Or 85 |
0.1-0.4 |
0.1-0.4 |
| 75 |
2.6 |
2.5 |
| With NVIS (NATS) |
| 66 Or 75 |
0.1-0.4 |
0.1-0.4 |
| 85 |
2.6 |
2.5 |
CRANKSHAFT POSITION SENSOR RESISTANCE
| Application |
Ohms @ 77°F (25°C) |
| Altima |
512-632 |
| Frontier & Xterra |
512-632 |
| Maxima & Pathfinder |
470-570 |
| Quest |
512-632 |
| Sentra (2.0L Engine) |
166-204 |
EGR TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Volts |
K/Ohms |
| Altima |
| 32 (0) |
4.61 |
680-1110 |
| 122 (50) |
2.53 |
90-120 |
| 212 (100) |
0.87 |
17-24 |
| Sentra |
| 1.8L |
| 32 (0) |
4.56 |
620-1050 |
| 122 (50) |
2.25 |
65-94 |
| 212 (100) |
0.59 |
11-15 |
| 2.0L |
| 32 (0) |
4.56 |
730-890 |
| 122 (50) |
2.25 |
74-82 |
| 212 (100) |
0.59 |
12-14 |
| Frontier & Xterra (2.4L) |
| 32 (0) |
4.81 |
620-1050 |
| 122 (50) |
2.82 |
65-94 |
| 212 (100) |
0.59 |
11-15 |
ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| 68 (20) |
2100-2900 |
| 122 (50) |
680-1000 |
| 194 (90) |
236-260 |
HO2S HEATER RESISTANCE
| Application |
Ohms @ 77°F (25°C) |
| Front & Rear HO2S Heater |
2.3-4.3 |
HO2S OPERATING RANGE VOLTAGE
| Application |
Lean Volts |
Rich Volts |
| Front HO2S |
0.0-0.3 |
0.6-1.0 |
| Rear HO2S |
| Except Altima, Frontier 2.4L, Sentra & Xterra 2.4L |
0.0-0.3 |
0.6-1.0 |
| Altima, Frontier 2.4L, Sentra & Xterra 2.4L |
0.0-0.3 |
0.6-1.0 |
INTAKE AIR TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| 68 (20) |
2100-2900 |
| 176 (80) |
270-380 |
KNOCK SENSOR RESISTANCE
| Application |
Ohms @ 77°F (25°C) |
| Except Altima, Frontier, I30, Maxima & Sentra |
500,000-620,000 |
| Altima, Frontier, I30, Maxima & Sentra |
500,000-620,000 |
MASS AIRFLOW SENSOR VOLTAGE
| Application |
Volts At Idle |
Volts At 2500 RPM |
| Altima |
1.0-1.7 |
1.8-2.4 |
| Frontier & Xterra |
| 4-Cylinder |
0.9-1.8 |
1.9-2.3 |
| V6 |
1.0-1.7 |
1.7-2.3 |
| I30 & Maxima |
1.2-1.8 |
1.6-2.2 |
| Pathfinder & QX4 |
1.0-1.7 |
1.7-2.3 |
| Quest |
1.0-1.7 |
1.7-2.3 |
| Sentra |
| 1.8L |
1.0-1.7 |
1.5-2.4 |
| 2.0L |
1.3-1.7 |
1.8-2.4 |
POWER STEERING OIL PRESSURE SWITCH
| Condition |
Continuity |
| Steering Unloaded (Not Turning Steering Wheel) |
No |
| Steering Loaded (Turning Steering Wheel) |
Yes |
FUEL TANK TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| 68 (20) |
2300-2700 |
| 122 (50) |
790-900 |
THROTTLE POSITION (TP) SENSOR VOLTAGE
| Application |
Volts |
| Except Frontier & Xterra (2.4L) |
| Throttle Fully Closed |
0.15-0.85 |
| Throttle Fully Open |
3.5-4.7 |
| Frontier & Xterra (2.4L) |
| Throttle Fully Closed |
0.2-0.8 |
| Throttle Fully Open |
3.5-4.5 |