Engine Controls - Sensor Operating Range Charts - 2.3L 4-CYL: Introduction
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 with a Digital Volt-Ohmmeter (DVOM) with minimum 10-megohm input impedance.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE
| Temperature - °F (°C) |
Ohms |
| -22 (-30) |
20,000-30,000 |
| 68 (20) |
8300-10,600 |
| 104 (40) |
2300-2700 |
| 140 (60) |
565-670 |
| 176 (80) |
295-365 |
| 194 (90) |
200-240 |
| 230 (110) |
140-160 |
INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE
| Temperature - °F (°C) |
Ohms |
| -22 (-30) |
20,000-30,000 |
| 14 (-10) |
7000-11,400 |
| 68 (20) |
2100-2900 |
| 104 (40) |
1000-1300 |
| 140 (60) |
565-670 |
| 176 (80) |
295-365 |
| 194 (90) |
240-260 |
HEATED OXYGEN SENSOR (HO2S) VOLTAGE
| Condition |
Volts |
| Lean |
0-0.4 |
| Rich |
0.6-1.0 |
THROTTLE POSITION (TP) SENSOR RESISTANCE
| Position |
Ohms |
| Total Resistance |
1600-2400 |
| Idle Position |
800-1200 |
| Wide Open Throttle |
2000-3000 |