Sensor Range Charts
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 stated otherwise in test procedure. To identify ECU terminals, see wiring diagram in the WIRING DIAGRAMS
article. CRANKSHAFT POSITION SENSOR RESISTANCE - @ 77°F (25°C)
| Application |
Ohms |
| Pathfinder |
432-528 |
ENGINE (COOLANT) TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| 68 (20) |
2100-2900 |
| 122 (50) |
680-1000 |
| 176 (80) |
300-330 |
| 194 (90) |
236-260 |
EXHAUST GAS TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| 212 (100) |
76,770-93,830 |
INTAKE AIR TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| 68 (20) |
2100-2900 |
| 122 (50) |
680-1000 |
| 176 (80) |
300-330 |
| 194 (90) |
236-260 |
KNOCK (DETONATION) SENSOR RESISTANCE - @ 77°F (25°C)
| Application |
Ohms |
| Pathfinder |
Continuity To Ground |
MASS AIRFLOW SENSOR VOLTAGE TEST
| Application |
Volts
With KOEO |
Volts At Idle |
| Pathfinder |
Less Than 1.0 |
1.5-2.0 |
OXYGEN SENSOR OPERATING RANGE
| Application |
Volts |
| Front Oxygen Sensor |
About .35-.60 |
| Rear Oxygen Sensor |
About .43-.48 |
OXYGEN SENSOR HEATER ELEMENT RESISTANCE - @ 77°F (25°C)
| Application |
Ohms |
| Front & Rear HO2S |
2.3-4.3 |
POWER STEERING OIL PRESSURE SWITCH
| Condition |
Continuity |
| Steering Unloaded (Not Turning Steering Wheel) |
No |
| Steering Loaded (Turning Steering Wheel) |
Yes |
THROTTLE POSITION SENSOR RESISTANCE TEST
| Application |
Wire Colors |
k/Ohms |
| Pathfinder |
Black & White |
1.0-9.0 |