Servicing injection system ,General notes on self-diagnosis, Safety ,Rules for cleanliness, Procedure to be followed prior to opening high-pressure injection system – take note of the Following, Technical data – fitting locations…

Exploded view – intake manifold, Exploded view – fuel rail, Exploded view – air cleaner / engine cover panel, Removing and installing engine cover panel with air filter element, Removing and installing intake manifold with fuel rail, Removing and installing injectors, Checking initial fuel pressure (up to high-pressure pump), Checking fuel pressure and residual pressure (up to high-pressure pump), Exploded view – high-pressure fuel pump. Fuel pressure sender -G247- -1- (tightening torque: 22 Nm) • Make sure that connecting piece is tightened to specified torque “30 Nm” before installing fuel pressure sender -G247-. Hall sender -G40- -1-. Air mass meter -G70- -1-. Fuel pump control unit -J538- -1-. • Adaption must be performed after renewing fuel pump control unit -J538- . Basic setting, measured value block 103, refer to ? Rep. Gr. 20. Electrical connector 1 – Lambda probe -G39- and Lambda probe heater -Z19-. Lambda probe after catalytic converter 1 – Lambda probe, after catalytic converter -G130- and Lambda probe heater 1, after catalytic converter -Z29-. Electrical connector Pfeil – Lambda probe, after catalytic converter -G130- and Lambda probe heater 1, after catalytic converter -Z29- on right-side underbody. Radiator outlet coolant temperature sender -G83- -1-. Connector 4 – Clutch position sender -G476-. Pedal bracket Pfeil – Brake light switch -F- and brake pedal switch -F63-. Fitting location of accelerator pedal position sender -G79- and accelerator pedal position sender 2 -G185- (in driver’s footwell). Components on turbocharger: 1 – Removing and installing turbocharger: ? Rep. Gr. 2, 2 – Tighten charge pressure control solenoid valve -N75- to 3 Nm, 3 – Tighten turbocharger air recirculation valve -N249- to 7 Nm (note installation position, refer to next illustration). Pay attention to installation position of turbocharger air recircula? tion valve -N249-.

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