Engine Controls - Sensor Operating Range Charts - 2.5L: 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 using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
AIRFLOW SENSOR VOLTAGES
| Terminal |
Ignition On Volts |
Engine Running Volts |
| "C" (Power Supply) |
12.0 |
12.0 |
| "B" |
1.0-1.5 |
1.5-5.0 |
| "A" (Ground) |
0-1 |
0-1 |
AIRFLOW METER TERMINAL RESISTANCE
| Terminals |
Fully Closed Ohms |
Fully Open Ohms |
| E2 & Vs |
20-600 |
20-1000 |
| E2 & Vc |
200-400 |
200-400 |
| E2 & THA |
| -4°F (-20°C) |
10,000-20,000 |
10,000-20,000 |
| 68°F (20°C) |
2000-3000 |
2000-3000 |
| 140°F (60°C) |
400-700 |
400-700 |
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE
| Temperature |
Ohms |
| -4°F (-20°C) |
14,600-17,800 |
| 68°F (20°C) |
2200-2700 |
| 104°F (40°C) |
1000-1300 |
| 140°F (60°C) |
500-650 |
| 176°F (80°C) |
290-350 |
EGR POSITION SENSOR RESISTANCE
| Terminals |
Ohms With No No Vacuum Applied |
Ohms @ 5.9 in. Hg |
| "A" & "B" |
2700 |
2700 |
| "A" & "C" |
500 |
2700 |
| "B" & "C" |
2400 |
100 |
OXYGEN SENSOR
| Operating Condition |
Volts |
| Rapidly Accelerating |
0.5-1.0 |
| Deceleration |
0.0-0.4 |
THROTTLE POSITION SENSOR CONTINUITY
| Condition |
Continuity Between Terminals "C" & "D" |
| Millenia 2.5L |
| .006" (.15 mm) |
Yes |
| .020" (.50 mm) |
No |
THROTTLE POSITION SENSOR VOLTAGE
| Wire Color To Ground |
Closed Throttle Volts |
Wide Open Throttle Volts |
| Yellow/Red (3F)
(Millenia 2.5L) |
0.1-1.0 |
2.8-4.5 |