EGR Position Sensor
- Disconnect EGR position sensor electrical connector. Connect ohmmeter to EGR position sensor. Disconnect vacuum hose from EGR control valve. Apply vacuum to EGR control valve.
- Check sensor resistance between indicated terminals. See EGR POSITION SENSOR RESISTANCE table. If resistance is not within specifications, replace sensor.
EGR POSITION SENSOR VOLTAGE
| Terminal (ECU) | Volts | |
|---|---|---|
| "A" (2J) | ||
| Without Vacuum | About 0.7 | |
| With 5.9 In. Hg | About 4.7 | |
| "B" (3D) | Less Than 1.5 | |
| "C" (2I) | 4.5-5.5 | |
EGR POSITION SENSOR RESISTANCE
| Terminals | Ohms |
|---|---|
| "A" & "B" | 700-5000 |
| "A" & "C" | 700-5000 |
| "B" & "C" | 5000 |