Leon Mk2
| Fitting location overview, vehicles with engine identification codes BWJ, CDLD, CDLA |
| Components A to M are not shown in the exploded view. |
| 1 - | Charge pressure control solenoid valve -N75- |
| q | Mounted direct in the exhaust gas turbocharger |
| 2 - | Connector for air mass sensor -G70- |
| q | Air mass meter -G70- in air filter upper section |
| 3 - | Ignition coils with output stages |
| q | Removing and installing → Chapter |
| q | Ignition coil 1 with output stage -N70- |
| q | Ignition coil 2 with output stage -N127- |
| q | Ignition coil 3 with output stage -N291- |
| q | Ignition coil 4 with output stage -N292- |
| q | The ignition coils must be removed from the cylinder head with the extractor -T40039- |
| 4 - | Lambda probe -G39- and and heater for the Lambda probe -Z19-, 52 Nm |
| q | Fitting location → Fig. |
| q | Removing and installing → Chapter |
| 5 - | Engine control unit -J623- |
| q | removing and fitting → Chapter |
| 6 - | Fuel pressure sender for low pressure -G410- |
| q | Tightening torque: 15 Nm |
| 7 - | Fuel pressure regulating valve -N276- |
| 8 - | Valve -1- for variable distribution -N205- |
| q | Removing and installing → Chapter |
| 9 - | Single piston high pressure pump |
| q | Removing and installing → Chapter |
| 10 - | 6 pin connector |
| q | For the Lambda probe -G39- and Lambda probe heating -Z19- (black) |
| 11 - | Coolant temperature sender -G62- |
| q | Fitting location → Fig. |
| 12 - | Components: |
| q | Engine speed sender -G28- |
| q | Oil pressure switch -G10- |
| q | 3-pin connector for knock sensor 1 -G61- |
| q | 3-pin connector for Knock sensor II -G66- |
| q | Fitting location → Fig. |
| 13 - | Intake manifold flap motor -V157- withintake manifold flap potentiometer -G336- |
| q | After replacement of fuel distributor, it is necessary to readapt the potentiometer for the manifold flap -G336- to the engine control unit -J623- → Vehicle diagnostic tester»Guided functions« |
| 14 - | Activated charcoal filter solenoid valve 1 -N80- |
| 15 - | Charge air pressure sender -G31- |
| q | Fitting location → Fig. |
| 16 - | Turbocharger air recirculation valve -N249- |
| q | Fitting location → Fig. |
| 17 - | Connection |
| q | For Hall sender -G40- and fuel pressure regulator -G247- |
| q | Fitting location → Fig. |
| 18 - | 8-pin connector for injectors |
| q | Fitting location → Fig. |
| 19 - | Throttle Control Unit -J338-, Throttle Control Unit (Electric accelerator control unit) -G186- |
| q | Angle sensor 1 for throttle valve drive on electronic accelerator control unit -G187- and angle sensor 2 for throttle drive on electronic accelerator control unit -G188- |
| q | After replacement of the throttle valve control unit -J338-, it is necessary to readapt it to the engine control unit -J623- (basic settings, display group 60), see → Vehicle diagnostic tester»Guided functions« |
| q | Removing and installing → Chapter |
| 20 - | Intake air temperature sender -G42- |
| q | 11 Nm |
| 21 - | Radiator outlet coolant temperature sender -G83- |
| q | Fitting location → Fig. |
| 22 - | Fuel pressure sender -G247- |
| q | 22 Nm |
| q | Fitting location → Fig. |
| 23 - | Hall sender -G40- (camshaft position sensor) |
| q | Electric connector |
| A - | Diagnostic connector |
| q | In driver's knee restraint |
| B - | Knock sensor I -G61- |
| q | For cylinder 1 and 2 |
| q | 20 Nm |
| q | Fitting location → Fig. |
| C - | Knock sensor 2 -G66- |
| q | For cylinder 3 and 4 |
| q | 20 Nm |
| q | Fitting location → Fig. |
| D - | Fuel pump control unit -J538- |
| q | Installation location: |
| q | If the Fuel pump control unit -J538- is replaced, a basic adjustment must be completed → Vehicle diagnostic tester. |
| E - | Indicator light for electronic accelerator control unit „EPC“ |
| q | On the instrument panel |
| F - | Exhaust emissions warning light „MIL“ |
| q | On the instrument panel |
| G - | Lambda probe after catalytic converter -G130- and Heater for lambda probe 1, after the catalytic converter -Z29- |
| q | Fitting location → Fig. |
| q | Removing and installing → Chapter |
| H - | Brake light switch - F- and brake pedal switch -F63- |
| q | Fitting location → Fig. |
| I - | Accelerator position sender -G79- and accelerator position sender 2 -G185- |
| q | On the accelerator pedal (both senders are located in the housing) |
| q | Fitting location → Fig. |
| J - | Clutch position sender -G476- |
| q | Fitting location → Fig. |
| K - | Relay carrier and fuse in the electronics unit |
| q | Assignment, refer to → Current flow diagrams, Electrical fault finding and Fitting locations |
| L - | Fan control unit -J293- |
| q | Fitted on left-side radiator fan (in direction of travel) |
| M - | Injectors |
| q | on fuel distribution line (rail) |
| q | Removing and installing → Chapter |
| q | Injector, cylinder 1 -N30- |
| q | Injector, cylinder 2 -N31- |
| q | Injector, cylinder 3 -N32- |
| q | Cylinder 4 injector -N33- |
| The injectors are high pressure injectors. These inject fuel directly into the cylinder and high-pressure about (approx. 110 bar maximum) |
