Leon Mk1
| Injection system components: removal and installation |
| 1 - | Plug |
| q | Note fitting position |
| 2 - | 3 Nm |
| q | Observe notes on installing → Chapter |
| 3 - | Air cleaner |
| q | Dismantling and assembling → Chapter |
| q | Air cleaner: removal and installation → Fig. |
| 4 - | Tube guide |
| q | Clipped onto fuel rail |
| 5 - | 10 Nm |
| 6 - | Fuel rail with injectors |
| q | Dismantling and assembling → Chapter |
| 7 - | Intake manifold |
| q | Dismantling and assembling → Chapter |
| 8 - | From activated charcoal filter solenoid valve -N80-*/** → Chapter |
| 9 - | Connector |
| q | Grey, 8 pin |
| q | For throttle valve control part -J338- |
| q | Gold terminal contacts |
| 10 - | From brake servo |
| 11 - | 5 Nm |
| 12 - | Engine speed sender -G28-* |
| q | Location → Chapter, component location diagramme |
| q | Before dismantling, remove intake manifold → Item |
| q | Checking → Chapter |
| 13 - | Lambda probe -G39-*, 50 Nm |
| q | Location → Chapter, component location diagramme |
| q | Only lubricate thread with -G 052 112 A3-. -G 052 112 A3- must not get into the slots on the probe body |
| q | If sealing ring is leaking nip open and replace the o-ring. |
| q | Remove and install with spanner -U-40080- |
| q | Check Lambda probe heating → Chapter |
| q | Probe heating voltage supply via fuel pump relay -J17- |
| q | Check probe heating for continuity |
| q | Checking Lambda control → Chapter |
| 14 - | 4-pin connector |
| q | Location → Chapter, component location diagramme |
| q | Black |
| q | For Lambda probe and Lambda probe heating |
| q | Connector contacts 3 and 4 are gold-plated |
| 15 - | Thermostat housing |
| 16 - | Retaining clip |
| q | Ensure tight fit |
| 17 - | O-ring |
| q | Renew if damaged |
| 18 - | Plug |
| q | If necessary release pressure in cooling system before removing |
| 19 - | 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 |
| q | Resistance values between contacts → Fig. |
| q | Checking → Chapter |
| 20 - | Connector |
| q | Black, 4-pin |
| q | For coolant temperature sender -G62- and coolant temperature gauge sender -G2- |
| 21 - | Retaining frame |
| q | Fitting location: In plenum chamber |
| q | For engine control unit |
| 22 - | Connector |
| q | Only disconnect or connect with ignition switched off |
| 23 - | 4CV control unit -J448-* |
| q | Fitting location: In plenum chamber |
| q | For injection system, Lambda regulation, activated charcoal filter solenoid valve, knock control, governed speed, ignition and selfdiagnosis |
| q | Checking voltage supply → Chapter |
| q | Renew → Chapter |
| q | Coding → Chapter |
| q | If replaced carry out basic setting → Chapter |
| q | On replacement, the control unit must be matched to the electronic immobilizer → Chapter |
| 24 - | Warm air intake hose |
| q | From warm air collector plate: → Chapter |
| 25 - | Connecting piece for cold air intake |
| q | Additionally secured on body with retaining clip |
| 26 - | Sealing ring |
| q | Renew |
| 27 - | 20 Nm |
| 28 - | Vacuum hose |
| 29 - | Supply hose |
| q | Black with white mark |
| q | Secure with spring-type clips |
| q | Check for secure seating |
| q | From fuel filter: → Chapter |
| 30 - | Return hose |
| q | Blue or with blue marking |
| q | Secure with spring-type clips |
| q | Check for secure seating |
| q | To the fuel delivery unit in fuel tank: → Chapter |
| 31 - | Connector |
| q | Black, 2-pin |
| q | For injectors -N30-...-N33-) |
| 32 - | Connector |
| q | Location → Chapter, engine bay fitting plan |
| q | Black, 2-pin |
| q | For knock sensor 1 -G61- |
| q | Gold terminal contacts |
| 33 - | Connector |
| q | Location → Chapter, engine bay fitting plan |
| q | Black, 4-pin |
| q | For intake manifold pressure sender and sender for intake air temperature in intake manifold |
| q | Gold terminal contacts |
| 34 - | 5 Nm |
| 35 - | Crankcase breather hose |
| q | From oil separator: → Chapter |
