Octavia Mk1
| Connection diagram for vacuum hoses |
| Engines with identification characters ATD |
| 1 - | Vacuum setting element |
| q | For intake manifold flap |
| 2 - | Changeover valve for intake manifold flap -N239- |
| 3 - | Non-return valve |
| q | only on engines ► 03.02 |
| q | white connection points to vacuum unit, to charge pressure control solenoid valve -N75- and to change-over valve for intake manifold flap -N239- |
| 4 - | Vacuum reservoir |
| 5 - | Y - distributor part |
| 6 - | T - distributor part |
| 7 - | To air filter |
| 8 - | Solenoid valve for charge pressure control -N75- |
| q | Test charge pressure control → 1.9 l/74 kW (TDI) Engine, Mechanical Components; Rep. Gr. 21 |
| 9 - | Vacuum setting element |
| q | For charge pressure control |
| q | part of turbocharger, cannot be replaced separately |
| 10 - | Solenoid valve for exhaust gas recirculation -N18- |
| q | check → Chapter |
| 11 - | Mechanical valve |
| q | for exhaust gas recirculation |
| q | part of inlet connection, cannot be replaced separately |
| q | check → 1.9 ltr./74 kW (TDI) Engine, Mechanics; Rep. Gr.26 |
| 12 - | Tandem pump |
| 13 - | Vacuum connection |
| q | with non-return valve |
| 14 - | Brake servo unit |
| Engines with engine code AXR |
| 1 - | Solenoid valve for exhaust gas recirculation -N18- |
| q | check → Chapter |
| 2 - | Mechanical valve |
| q | for exhaust gas recirculation |
| q | part of inlet connection, cannot be replaced separately |
| q | check → 1.9 ltr./74 kW (TDI) Engine, Mechanics; Rep. Gr.26 |
| 3 - | Y - distributor part |
| 4 - | EGR valve -2- -N213- |
| 5 - | Vacuum setting element |
| q | the radiator flap for exhaust gas recirculation |
| 6 - | Solenoid valve for charge pressure control -N75- |
| q | Test charge pressure control → 1.9 l/74 kW (TDI) Engine, Mechanical Components; Rep. Gr. 21 |
| 7 - | Vacuum setting element |
| q | For charge pressure control |
| q | part of turbocharger, cannot be replaced separately |
| 8 - | Vacuum reservoir |
| 9 - | T - distributor part |
| q | double |
| 10 - | Vacuum connection |
| q | with non-return valve |
| 11 - | Tandem pump |
| 12 - | Brake servo unit |
| 13 - | To air filter |
