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| Vehicle diagnostic, testing and information system -VAS 5051 B -, see equivalent → Anchor |
WARNING | The injection system consists of a high-pressure section (maximum approx. 120 bar) and a low-pressure section (approx. 6 bar). |
| Prior to opening the high-pressure section (e.g. when removing the high-pressure pump, fuel rail, injectors, fuel pipes or fuel pressure sender -G247-), the fuel pressure in the high-pressure section must be reduced to a residual pressure of approx. 6.5 bar. The procedure is described in the chapter "Reduction of high pressure system pressure" → Chapter. |
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| Reduce the high fuel pressure. |
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| Connect vehicle diagnostic, testing and information system -VAS 5051B-. |
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| Select the „guided functions“ in the vehicle self-diagnosis. |
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| Select the test „Pressure reduction in the high-pressure system“. |
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| The high-pressure system must be opened »immediately« after reducing the fuel pressure; wrap a clean cloth around the connection. Catch the fuel coming out. |
WARNING | The ignition must not be turned on. |
| The fuel lines are still filled with fuel, the fuel is not under pressure any more. When opening the fuel system, wear protective goggles and clothing to prevent injuries and contact with the skin. |
| Before opening the high-pressure system, place a cloth around the connection. |
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| The following operations must be performed after completing repair work: |
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| The fault memory and generate readiness code in engine control unit using „Guided Functions“ mode of → Vehicle diagnostic tester„vehicle diagnostic, testing and information system“. |
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