Section 27 (Diesel Fuel Injection - 1.9L TDI, 1Z & AHU (A3 Platform))
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.
- Diesel Turbo Direct Injection (TDI) system, servicing
- Notes
- Safety precautions
- Rules for cleanliness
- Diesel Direct Fuel Injection (DFI) system components, overview
- Diesel injection pump, servicing
- Fuel filter, servicing
- Accelerator pedal control, servicing
- Cylinder 1 at Top Dead Center (TDC), setting
- Throttle Position (TP) sensor, removing, installing and adjusting
- Diesel injection pump, removing and installing
- Start of injection, dynamically checking and adjusting
- Valve timing, checking
- Fuel injectors, removing and installing
- Fuel injectors, servicing
- Timing control cover O-ring, replacing
- Wiring and component checks, using VAG1598/18 test box
- Engine speed (RPM) sensor, checking
- Manifold Absolute Pressure (MAP) and barometric pressure (BARO) sensors, checking
- Engine Coolant Temperature (ECT) sensor, checking
- Brake light switch and brake vacuum vent valve switch, checking
- Clutch vacuum vent valve switch, checking
- Intake Air Temperature (IAT) sensor, checking
- TDI system current supply, checking
- Fuel temperature sensor, checking
- Modulating piston displacement sensor and quantity adjuster, checking
- Quantity adjuster, checking
- Needle lift sensor, checking
- Quantity adjuster control range, checking
- Boost pressure control, checking
- Wastegate bypass regulator valve, electrical checks
- Wastegate bypass regulator valve -N75- voltage supply, checking
- Exhaust Gas Recirculation (EGR) and Mass Air Flow (MAF) sensor functions, checking
- Vehicle speed signal, checking
- Throttle Position (TP) sensor, checking