Engine Controls - Sensor Operating Range Charts - 4.0L & 4.6L: Specifications
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:
Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
COMPONENT RESISTANCE VALUES
| Component |
Ohms |
| Crankshaft Position Sensor |
1235-1365 |
| EVAP Purge Control Valve |
20-40 |
| Fuel Injector |
15.7-16.7 |
| HO2S Heater |
5.7 |
| IAC Stepper Motor Coil |
51-55 |
| Ignition Coil |
| Primary Coil |
0.8 |
| Secondary Coil |
13,000 |
| Throttle Position Sensor |
3200-4800 |
ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
Output Voltage |
| -22 (-30) |
28,000 |
4.70 |
| 14 (-10) |
9000 |
4.20 |
| 68 (20) |
2500 |
2.70 |
| 104 (40) |
1050 |
2.00 |
| 140 (60) |
600 |
1.20 |
| 176 (80) |
330 |
0.75 |
| 266 (130) |
90 |
0.25 |
ENGINE FUEL TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| -22 (-30) |
23,000-32,000 |
| 14 (-10) |
8400-10,200 |
| 68 (20) |
2350-2650 |
| 104 (40) |
1000-1300 |
| 140 (60) |
520-670 |
| 176 (80) |
290-365 |
INTAKE AIR TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| -22 (-30) |
23,000-32,000 |
| 14 (-10) |
8400-10,200 |
| 68 (20) |
2350-2650 |
| 104 (40) |
1000-1300 |
| 140 (60) |
520-670 |
| 176 (80) |
290-365 |
MASS AIRFLOW SENSOR OUTPUT VOLTAGE
| Airflow |
Output Voltage |
| Minimum |
Zero |
| 0.3 lbs/min (0.1 kg/min) |
0.8 |
| 0.4 lbs/min (0.2 kg/min) |
1.0 |
| 0.5 lbs/min (0.2 kg/min) |
1.1 |
| Engine @ Idle |
1.4 |
| 1.2 lbs/min (0.5 kg/min) |
1.6 |
| 2.1 lbs/min (1.0 kg/min) |
2.0 |
| 3.7 lbs/min (1.7 kg/min) |
2.4 |
| 6.0 lbs/min (2.7 kg/min) |
2.8 |
| 8.6 lbs/min (3.9 kg/min) |
3.1 |
| 11.9 lbs/min (5.4 kg/min) |
3.5 |
| 16.5 lbs/min (7.5 kg/min) |
3.9 |
| 22.5 lbs/min (10.2 kg/min) |
4.3 |
| 29.1 lbs/min (13.2 kg/min) |
4.7 |
| Maximum |
5.0 |
OXYGEN SENSOR VOLTAGE
| Condition |
Volts |
| Primary HO2S |
| Lean |
4.7 |
| Rich |
0.2 |
| Secondary HO2S |
| Lean |
0.9 |
| Rich |
0.1 |
OXYGEN SENSOR HEATER RESISTANCE
| Measured Between Terminals |
Ohms |
| 3 & 4 |
5.7 |
THROTTLE POSITION SENSOR VOLTAGE
| Position |
Volts |
| Idle |
0.6 |
| Maximum Throttle |
4.5 |