INTRODUCTION
Note. This article also applies to Infiniti I30 and QX4. For I30 coverage, refer to Maxima, unless otherwise indicated. For QX4 coverage, refer to Pathfinder, unless otherwise indicated.
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.
| Application | Ohms @ 68°F (20°C) |
|---|
| Maxima |
| Hitachi Sensor | 1440-1760 |
| Mitsubishi Sensor | 2090-2550 |
CAMSHAFT POSITION SENSOR RESISTANCE
| ECM Terminal No. | Volts At Idle (1) | (1) Voltage At 2000 RPM |
|---|
| Altima |
| 40 | 2.5 | 2.3-2.5 |
| 41 Or 42 | 0.1-0.5 | 0.2-0.4 |
| Frontier & Xterra (4-Cylinder) |
| 44 Or 48 | 0.2-0.5 | 0.0-0.5 |
| 49 | 2.6 | 2.5-2.6 |
| Frontier & Xterra (V6) & Pathfinder |
| 49 Or 53 | 0.3-0.5 | 0.3-0.5 |
| 44 | 2.5 | 2.5 |
| Maxima |
| 66 Or 76 | 4.2 (2) | .3-.5 |
| Quest |
| 44 Or 48 | 0.3-0.5 | 0.3-0.5 |
| 49 | 2.5 | 2.5 |
| Sentra (2.0L) |
| 40 Or 44 | 0.1-0.4 | 0.1-0.4 |
| 41 Or 45 | 2.5 | 2.4 |
| (1) Voltage measurement is approximate. (2) A/C volts. |
| (1) | Voltage measurement is approximate. |
CAMSHAFT POSITION SENSOR VOLTAGE
| Application | Ohms @ 77°F (25°C) |
|---|
| Altima | 432-528 |
| Frontier, Pathfinder & Xterra | (1) 166.5-203.5 |
| Maxima | 470-570 |
| Quest | (1) 512-632 |
| Sentra (2.0L Engine) | 166-204 |
| (1) Sensor resistance is measured at 68°F (20°C). |
| (1) | Sensor resistance is measured at 68°F (20°C). |
CRANKSHAFT POSITION SENSOR RESISTANCE
| Temperature °F (°C) | Volts | K/Ohms |
|---|
| Altima & Maxima |
| 32 (0) | 4.61 | 680-1110 |
| 122 (50) | 2.53 | 90-120 |
| 212 (100) | 0.87 | 17-24 |
| Quest & Sentra |
| 32 (0) | 4.56 | 620-1050 |
| 122 (50) | 2.25 | 65-94 |
| 212 (100) | 0.80 | 11-15 |
| Except Altima, Maxima, Quest & Sentra |
| 32 (0) | 4.81 | 7900-9700 |
| 122 (50) | 2.82 | 570-700 |
| 212 (100) | 0.80 | 80-100 |
EGR TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) | Ohms |
|---|
| 68 (20) | 2100-2900 |
| 122 (50) | 680-1000 |
| 194 (90) | 236-260 |
ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE
| Application | (1) Ohms @ 77°F (25°C) |
|---|
| Front & Rear HO2S Heater | 2.3-4.3 |
| (1) Measure resistance between appropriate HO2S terminals. For complete HO2S testing, see appropriate DTC test in appropriate SELF-DIAGNOSTICS article. |
| (1) | Measure resistance between appropriate HO2S terminals. For complete HO2S testing, see appropriate DTC test in appropriate SELF-DIAGNOSTICS article. |
| Application | Lean Volts | Rich Volts |
|---|
| Front & Rear HO2S | 0.0-0.3 | 0.6-1.0 |
| (1) Maintain engine speed at 2000 RPM. |
| (1) | Maintain engine speed at 2000 RPM. |
HO2S OPERATING RANGE VOLTAGE (1)
| Temperature °F (°C) | Ohms |
|---|
| 68 (20) | 2100-2900 |
| 176 (80) | 270-380 |
INTAKE AIR TEMPERATURE SENSOR RESISTANCE
| Application | Ohms @ 77°F (25°C) |
|---|
| Except Altima, Frontier & Sentra | (2) 500,000-620,000 |
| Altima, Frontier & Sentra | (1) 500,000-620,000 |
| (1) Measured between knock sensor terminal No. 1 and ground. (2) Measured between knock sensor terminal No. 2 and ground. |
| (1) | Measured between knock sensor terminal No. 1 and ground. |
| (2) | Measured between knock sensor terminal No. 2 and ground. |
| Application | Volts At Idle (2) | (2) Volts At 2500 RPM |
|---|
| Altima | 1.2-1.5 | 1.9-2.3 |
| Frontier & Xterra |
| 4-Cylinder | 0.9-1.8 | 1.9-2.3 |
| V6 | 1.0-1.7 | 1.7-2.3 |
| Maxima | 1.0-1.7 | 1.5-2.1 |
| Pathfinder | 1.0-1.7 | 1.7-2.3 |
| Quest | 1.0-1.7 | 1.7-2.3 |
| Sentra |
| 1.6L | 1.0-1.7 | 1.7-2.1 |
| 2.0L | 1.3-1.7 | 1.8-2.4 |
| (1) Values are approximate and vary with engine RPM. Voltage should be less than one volt with Key On, Engine Off (KOEO). (2) With engine at normal operating temperature, specified speed and no load. |
| (1) | Values are approximate and vary with engine RPM. Voltage should be less than one volt with Key On, Engine Off (KOEO). |
| (2) | With engine at normal operating temperature, specified speed and no load. |
MASS AIRFLOW SENSOR VOLTAGE (1)
| Condition | Continuity |
|---|
| Steering Unloaded (Not Turning Steering Wheel) | No |
| Steering Loaded (Turning Steering Wheel) | Yes |
POWER STEERING OIL PRESSURE SWITCH
| Temperature °F (°C) | Ohms |
|---|
| 68 (20) | 2300-2700 |
| 122 (50) | 790-900 |
TANK FUEL TEMPERATURE SENSOR RESISTANCE
| Sensor Position | Ohms @ 77°F (25°C) |
|---|
| Fully Open | 0.5 |
| Partly Open | 0.5-4.0 |
| Fully Closed | 4.0 |
THROTTLE POSITION (TP) SENSOR RESISTANCE (ALTIMA, MAXIMA & PATHFINDER)
| Application | Volts |
|---|
| Throttle Fully Closed | 0.15-0.85 |
| Throttle Fully Open | 3.5-4.7 |
THROTTLE POSITION (TP) SENSOR VOLTAGE
