Leon Mk2
| Injection system components: removing and fitting |
| 1 - | Plug |
| 2 - | 3 Nm |
| q | Bear in mind the note on assembly → Fig. |
| 3 - | Air filter |
| q | Air filter: removing and fitting → Fig. |
| q | Disassembly and assembly → Chapter |
| 4 - | Wiring guide |
| q | Clipped to the fuel distributor |
| 5 - | 10 Nm |
| 6 - | Fuel distributor with injectors |
| q | Disassembly and assembly → Chapter |
| 7 - | Intake manifold |
| q | Disassembly and assembly → Chapter |
| 8 - | Comes from the activated charcoal filter solenoid valve -N80- |
| q | → Item |
| 9 - | Connector |
| q | Black, 6 contacts |
| q | For throttle valve control unit -J338- |
| q | Connector with gold contacts |
| 10 - | Comes from the brake servo |
| 11 - | Gasket |
| q | Replace |
| 12 - | Connecting line |
| q | Goes to the exhaust recirculation valve → Chapter |
| 13 - | 5 Nm |
| 14 - | Engine revs sender -G28- |
| q | Inductive sender |
| q | Before removing it, remove the intake manifold → Item |
| q | Location → Chapter |
| 15 - | Lambda probe before the catalyst -G39-, 50 Nm |
| q | Grease the thread only with “G 052 112 A3”. The “G 052 112 A3” must not get into the slots in the probe housing |
| q | Remove and fit with the -U-40080- |
| q | Probe heating voltage supply via the fuel pump relay -J17- |
| q | Location: in the exhaust manifold |
| 16 - | 6-pin connector |
| q | Black |
| q | For lambda probe and lambda probe heating before catalyst |
| q | Gold contacts |
| q | Lambda probe after the catalyst -G130- with 4-pin connector |
| q | Contacts 3 and 4, gold |
| q | Location → Chapter |
| 17 - | Thermostat housing |
| 18 - | Clip |
| q | Check for firm seating |
| 19 - | O-ring |
| q | Replace if worn |
| 20 - | Plug |
| q | Before removing it, reduce the pressure in the cooling system |
| 21 - | Coolant temperature sender -G62- |
| q | For engine control unit |
| q | With coolant temperature gauge sender -G2- |
| q | Before removing it, reduce the pressure in the cooling system |
| q | Resistance values between contacts C and D → Fig. |
| 22 - | Connector |
| q | Black, 4 contacts |
| q | For coolant temperature sender -G62- and coolant temperature gauge sender -G2- |
| 23 - | O-ring |
| q | Replace if worn |
| 24 - | 20 Nm |
| 25 - | Vacuum hose |
| 26 - | Connector |
| q | Detach and attach the connector with the ignition off |
| 27 - | Engine control unit |
| q | Control unit for injection system 4LV -J537- |
| q | Replace → Chapter |
| q | Location → Chapter |
| 28 - | Fixing mark |
| 29 - | Hot air intake hose |
| q | Comes from the hot air intake flap → Item |
| 30 - | Supply hose |
| q | Black, with white mark |
| q | Immobilise with strip clamps |
| q | Check for firm seating |
| q | Comes from the fuel filter → Item |
| 31 - | Return hose |
| q | Black, with blue mark |
| q | Immobilise with strip clamps |
| q | Check for firm seating |
| q | Goes to the fuel transport unit in the tank → Item |
| 32 - | Connector |
| q | Black, 2 contacts |
| q | For injector (-N30-…-N33-) |
| 33 - | Connector |
| q | Black, 2 contacts |
| q | For knock sensor 1 -G61- |
| q | Connector with gold contacts |
| q | Location → Chapter |
| 34 - | Connector |
| q | Black, 4 contacts |
| q | For intake manifold pressure sender and air temperature sender in the intake manifold |
| q | Connector with gold contacts |
| q | Location → Chapter |
| 35 - | Cold air intake line (For engine APE) |
| 36 - | Cold air intake connecting line (For engine AQQ, AUA) |
| q | Also fixed at upper front part, right side, with two bolts |
| 37 - | Engine sump breather hose |
| q | Comes from the oil separator → Item |
