Leon Mk2
| Location of components, engine code letters AZQ, BME and BXV . |
| 1 - | Solenoid valve 1 for active carbon filter (pulsed) -N80- |
| q | Active carbon filter system - Components overview → Chapter |
| 2 - | Intake manifold pressure sender -G71- with air intake temperature sender -G42- |
| q | See location → Item |
| 3 - | Electric connector |
| q | For speedometer sender -G22- |
| 4 - | Knock sensor I -G61- |
| q | Installation location: Cylinder block, intake side |
| q | check → Chapter |
| q | See location → Item |
| 5 - | Engine speed sender -G28- |
| q | Installation location: Cylinder block, intake side |
| q | check → Chapter |
| 6 - | Simos control unit -J361- |
| q | On replacement, the control unit must be matched to the electronic immobiliser → Chapter; Functions and components: |
| q | The engine with the identification letters BXV uses the Simos 9.1 management system, which has 80 pin connectors, and to carry out the corresponding checks the tester -VAG 1598/22- must be used. |
| 7 - | Throttle valve control mechanism -J338- |
| q | 6-pin connector |
| q | Gold plated contacts |
| q | Heated by coolant |
| q | If the throttle valve control mechanism is replaced, the new control part must be adapted to the engine control unit → Chapter; Functions and components: |
| q | check → Chapter |
| 8 - | Hall sender -G40- |
| q | check → Chapter |
| q | See location → Item |
| 9 - | 6-pin connector |
| q | Black |
| q | for lambda probe -G39- |
| q | Connector contacts 3 and 4 are gold-plated |
| 10 - | 4-pin connector |
| q | Black |
| q | For Lambda probes after the catalytic converter -G130- |
| 11 - | Exhaust gas recirculation valve -N18- with potentiometer for exhaust gas recirculation -G212- |
| q | See location → Item |
| 12 - | Coolant temperature sender -G62- |
| q | green |
| q | Before removing, possibly reduce cooling system pressure |
| 13 - | Injectors N30 ... N32 |
| q | Injector, cylinder 1 -N30- |
| q | Injector, cylinder 2 -N31- |
| q | Injector, cylinder 3 -N32- |
| q | Fuel Rail with injectors- Components overview → Chapter |
| q | Jet projection image and seal: checking → Chapter |
| q | Injectors: verification → Chapter |
| 14 - | Lambda after catalytic converter -G130-, 50 Nm |
| q | Installation location: in main catalytic converter |
| q | Remove and install with wrench -U 40080- . |
| q | Only grease the thread with heat proof paste → Spare parts catalogue. Heat proof paste → Spare parts catalogue must not reach the probe body grooves |
| q | In case of leakage, cut out and replace sealing ring |
| 15 - | Lambda probe -G39-, 50 Nm |
| q | Installation location: In exhaust manifold |
| q | Remove and install with wrench -U 40080- . |
| q | Only grease the thread with heat proof paste → Spare parts catalogue. Heat proof paste → Spare parts catalogue must not reach the probe body grooves |
| q | In case of leakage, cut out and replace sealing ring |
| 16 - | Ignition coil 1 with output stage -N70-, ignition coil 2 with output stage -N127- and ignition coil 3 with output stage -N291- |
| q | See location → Item |
| q | Remove with extractor -T10094- |
| 17 - | Intake manifold |
| q | Intake manifold - Components overview → Chapter |
