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.
Functional description
The characteristic map control influences the oil pressure in the control oil chamber. Two valves are involved in the characteristic map control:
- Oil pressure regulating valve
- Pressure limiting valve as fallback level
The oil pressure control valve can influence the oil pressure in the control oil chamber steplessly. The further the oil pressure is reduced, the more volume the volume-flow-controlled oil pump delivers. The main spring in the volumetric-flow-controlled oil pump that affects the slider is softer than in conventional systems. The slider is easier to move to a centered position, which means that the volume-flow-controlled oil pump adjusts to minimum delivery even with slight oil pressure in the control oil chamber. This reduces the pressure ratio in the oil circuit, which in turn means less energy to drive the volumetric-flow-controlled oil pump.
| Item | Explanation |
|---|---|
| 1 | two-pin plug connection |
| 2 | Oil pressure regulating valve |
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.