Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Schematic overview and setpoint values
The hall effect sensor is supplied with 5 Volts and ground by the DDE.
A bridge circuit (H bridge) is used to activate the servomotor. This permits activation of the servomotor in the opposite direction. The bridge circuit is monitored diagnostically. H-bridge designates an electrical gearshift with 5 shift elements in the shape of a capital H for shifting between.
| Item | Explanation |
|---|---|
| 1 | EGR controller |
| 2 | Cam disc |
| 3 | Bucket tappet |
| 4 | Housing |
| 5 | Seat |
Observe the following setpoint values for the EGR controller:
| Variable | Value |
|---|---|
| Servomotor supply voltage | 12 Volts |
| Activation frequency for servomotor | 1300 Hz |
| Blocking current for servomotor | 5 A |
| Hall effect sensor supply voltage | 4.5 to 5.5 V |
| Power consumption of hall effect sensor | 20 mA |
| Temperature range of hall effect sensor and servomotor | -40 °C to 140 °C |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.