Leon Mk1
| Removing and installing parts of the injection system |
| 1 - | Air cleaner |
| q | Dismantling and assembling → Chapter |
| 2 - | 10 Nm |
| 3 - | 6 Nm |
| 4 - | Vacuum connection |
| q | To intake manifold |
| 5 - | 40-pin connector |
| q | Only disconnect or connect with ignition switched off |
| q | Release to disconnect |
| 6 - | 81-pin connector |
| q | Only disconnect or connect with ignition switched off |
| q | Release to disconnect |
| 7 - | Engine control unit |
| q | Motronic control unit -J220- |
| q | Fitting location: In plenum chamber |
| q | Renew → Chapter |
| 8 - | 4-pin connector |
| q | Black for Lambda probe 1 before catalytic converter -G39- and Lambda probe heater -Z19- |
| q | On right in engine compartment |
| 9 - | Lambda probe 1 before catalytic converter -G39-, 50 Nm |
| q | Location: In front exhaust pipe |
| q | Grease only the threads with “G 052 112 A3”; “G 052 112 A3” must not get into the slots on the probe body |
| q | Remove and install with tool -U-40080- |
| 10 - | 4 pin connector |
| q | Brown for Lambda probe 2 after catalytic converter -G130- and Lambda probe heater -Z19- |
| q | On right in engine compartment |
| 11 - | Lambda probe 2 after catalytic converter -G130-, 50 Nm |
| q | Location: Behind catalytic converter |
| q | Grease only the threads with “G 052 112 A3”; “G 052 112 A3” must not get into the slots on the probe body |
| q | Remove and install with tool -U-40080- |
| 12 - | Bracket |
| 13 - | 10 Nm |
| 14 - | 10 Nm |
| 15 - | Engine speed sender -G28- |
| 16 - | 3-pin connector |
| q | White |
| q | For engine speed sender |
| q | Fitting location → Chapter, engine compartment overview |
| 17 - | O-ring |
| q | Renew if damaged |
| 18 - | 20 Nm |
| 19 - | 45 Nm |
| 20 - | Support |
| q | Between intake manifold and engine block |
| 21 - | 6 Nm |
| 22 - | Charge pressure sender -G31- |
| 23 - | Intake manifold |
| 24 - | Gasket |
| q | Renew |
| 25 - | From tank breather (vent) valve -N80- |
| q | → Item |
| 26 - | Throttle valve control part-J338- |
| q | Activated charcoal filter system → Chapter |
| q | No cable disc for accelerator cable as this is an electronic accelerator system |
| q | 6-pin connector |
| 27 - | Return pipe |
| q | Secure with spring-type clips |
| q | Check securely seated |
| q | To the fuel delivery unit in fuel tank → Item |
| 28 - | Supply pipe/hose |
| q | Secure with spring-type clips |
| q | Check securely seated |
| q | From fuel filter → Item |
| 29 - | 10 Nm |
| 30 - | Fuel rail with injectors |
| q | Dismantling and assembling → Chapter |
| 31 - | Intake air temperature sender -G42- |
| 32 - | To pipe between turbocharger and charge air cooler |
| q | Larger connection union → Item |
| 33 - | To pipe between turbocharger and charge air cooler |
| q | Smaller connection union → Item |
| 34 - | To turbocharger |
| q | → Item |
| 35 - | From crankcase breather |
| 36 - | Coolant temperature sender -G62- |
| q | For engine control unit |
| q | With coolant temperature gauge sender -G2- |
| q | If necessary release pressure in cooling system before removing |
| 37 - | Connector |
| q | Black, 4-pin |
| q | For coolant temperature sender -G62- |
| 38 - | Retaining clip |
| q | Check seated securely |
| 39 - | To turbocharger divert valve -N249- |
| q | → Item |
| 40 - | To pressure unit on turbocharger |
| q | → Item |
| 41 - | Charge pressure limitation solenoid valve -N75- |
| 42 - | Intake hose |
| 43 - | Air mass meter -G70- |
| q | 5-pin connector |
