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 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. To identify ECM terminals, see appropriate wiring diagram in WIRING DIAGRAMS
article. CRANKSHAFT POSITION SENSOR RESISTANCE @ 77°F (25°C)
| Application |
Ohms |
| Pickup |
166-204 |
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 |
EGR TEMPERATURE SENSOR RESISTANCE
| Temperature - °F (°C) |
Ohms |
| 32 (0) |
7.9-9.7 |
| 122 (50) |
.57-70 |
| 212 (100) |
.08-1.0 |
FUEL TEMPERATURE SENSOR RESISTANCE
| Application Temperature °F (°C) |
Ohms |
| 68 (20) |
2300-2700 |
| 122 (50) |
790-900 |
INTAKE AIR TEMPERATURE SENSOR RESISTANCE
| Application Temperature °F (°C) |
Ohms |
| 68 (20) |
2100-2900 |
| 122 (50) |
680-1000 |
| 176 (80) |
300-330 |
| 194 (90) |
236-260 |
KNOCK SENSOR RESISTANCE
| Application Temperature °F (°C) |
Ohms |
| 68 (20) |
1500,000-620,000 |
MASS AIRFLOW SENSOR VOLTAGE TEST
| Application |
Volts
With KOEO |
Volts At Idle |
| Pickup |
Less Than 1.0 |
1.0-1.7 |
HO2S OPERATING RANGE
| Application |
Volts |
| Front Oxygen Sensor |
About .35-.60 |
| Rear Oxygen Sensor |
About .43-.48 |
HO2S RESISTANCE @ 77°F (25°C)
| Application |
Ohms |
| Front HO2S |
2.3-4.3 |
| 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 |
TP SENSOR VOLTAGE (4-CYLINDER)
| Application |
Voltage |
| Pickup |
.30-.70 |