Leon Mk2
| Removing and installing parts of the injection system |
| 1 - | Motronic control unit -J220-* |
| q | Fitting location → Chapter, engine compartment overview |
| q | For injection system, Lambda regulation, activated charcoal filter tank venting valve, knock control, speed governing, ignition and self-diagnosis |
| q | Checking voltage supply → Chapter |
| q | Procedure after voltage supply open circuit → Chapter |
| q | Renew → Chapter |
| q | If replaced carry out basic setting → Chapter |
| q | On replacement, the control unit must be matched to the electronic immobilizer → Chapter |
| 2 - | Retaining frame |
| 3 - | Supply hose |
| q | Black with white marks |
| q | Secure with spring-type clips |
| q | Check securely seated |
| q | From fuel filter: → Chapter |
| 4 - | Return hose |
| q | Blue or with blue marking |
| q | Secure with spring-type clips |
| q | Check securely seated |
| q | To the fuel delivery unit in fuel tank → Chapter |
| 5 - | 10 Nm |
| 6 - | Cable guide |
| q | Clipped onto fuel rail |
| 7 - | Securing clip |
| q | Note version |
| 8 - | Connector |
| q | Black, 2-pin |
| q | For injector -N30-...-N33-) |
| 9 - | Connector |
| q | Black, 6-pin |
| q | For throttle valve control part -J338- |
| q | Connector contacts are gold-plated |
| 10 - | Connector |
| q | Black, 4 pin |
| q | For intake manifold pressure sender and sender for intake air temperature in intake manifold |
| q | Connector contacts are gold-plated |
| 11 - | Fuel manifold with injectors |
| q | Dismantling and assembling → Chapter |
| 12 - | Vacuum hose |
| 13 - | 20 Nm |
| 14 - | Intake manifold |
| q | Dismantling and assembling → Chapter |
| 15 - | From brake servo |
| 16 - | 5 Nm |
| 17 - | Engine speed sender -G28-* |
| q | Fitting location → Chapter, fitting location overview |
| q | To remove, remove intake manifold → Item |
| q | Checking → Chapter |
| 18 - | Connector |
| q | Only engine codes ANV, AUC, AUD, ANW |
| q | For Lambda probe 2 after catalyst -G130- and Lambda probe heating -Z29- |
| q | Black, 4 pin |
| q | Contacts 3 and 4 gold plated |
| 19 - | Lambda probe 2 after catalyst -G130-*, 50 Nm |
| q | Only engine codes ANV, AUC, AUD, ANW |
| q | Fitting location → Chapter, engine compartment overview |
| 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 | Probe heating voltage supply via fuel pump relay -J17- |
| q | Check Lambda probe heating for Lambda probe after catalyst → Chapter |
| q | Check Lambda probe and Lambda regulation after catalyst → Chapter |
| 20 - | Lambda probe 1 before catalyst -G39-*, 50 Nm |
| q | Fitting location → Chapter, engine compartment overview |
| q | Grease only the threads with -G 052 112 A3-;must not get into the slots on the probe body |
| q | Probe heating voltage supply via fuel pump relay -J17- |
| q | Checking Lambda probe heating before catalyst → Chapter |
| q | Checking Lambda probe and Lambda regulation before catalyst → Chapter |
| Engine codes ANV, AUC, AUD, ANW |
| q | Checking Lambda probe ageing Lambda probe 1 → Chapter |
| 21 - | Connector |
| q | For Lambda probe 1 before catalyst -G39- and Lambda probe heating -Z19- |
| Engine code ALD, AKK |
| q | Black, 4 pin |
| q | Connector contacts 3 and 4 are goldplated |
| Engine codes ANV, AUC, AUD, ANW |
| q | Black, 6-pin |
| q | Contacts gold plated |
| 22 - | Seal |
| q | Renew |
| 23 - | Thermostat housing |
| 24 - | Retaining clip |
| q | Check seated securely |
| 25 - | O ring |
| q | Renew if damaged |
| 26 - | Coolant temperature sender -G62-* |
| q | Blue |
| q | For engine control unit |
| q | With coolant temperature gauge sender -G2- |
| q | If necessary release pressure in cooling system before removing |
| q | Resistance values between contacts 1 and 3 → Fig. |
| q | Checking → Chapter |
| 27 - | Connector |
| q | Black, 4 pin |
| q | For coolant temperature sender -G62- and coolant temperature gauge sender -G2- |
| 28 - | Plug |
| q | If necessary release pressure in cooling system before removing |
| 29 - | Guide tube |
| q | For dipstick |
| 30 - | 3 Nm |
| q | Notes on installing → Anchor |
| 31 - | Vent pipe |
| q | From tank venting valve in activated charcoal filter: → Chapter |
| 32 - | Connector |
| q | Only disconnect or connect with ignition switched off |
