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Home >> Volkswagen >> 1997 >> Cabrio Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 27 (Diesel Fuel Injection - 1.9L TDI, 1Z & AHU (A3 Platform)) >> Diesel Turbo Direct Injection (TDI) system, servicing >> Needle lift sensor, checking >> Notes

Needle lift sensor, checking: Notes

WARNING: This page is about a different car, the 1999 Volkswagen Jetta, 1998 Volkswagen Jetta, and 1997 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

The needle lift sensor signal determines the start of injection during normal operation by closed - loop control based on RPM, load and temperature. If the sensor malfunctions, control switches to open-loop, based on RPM and load.

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