Vacuum Hoses, Digital Climate Control (Climatronic)

Digital Climate Control (Climatronic)

Vacuum Hoses, Layout

NOTE:

- Arrows indicate vacuum.
- Insert vacuum hose into vacuum reservoir 30 mm (13/16 in). Insert vacuum hoses onto plastic connectors 15 mm (19/32 in).






1 - Vacuum reservoir
- Where applicable
2 - Fresh air/recirculating flap vacuum unit
3 - Vacuum hose
- From vacuum valve rail -N53- to fresh air/recirculating flap vacuum unit
- Vacuum valve rail connect ion with green marking
4 - Vacuum hose
- From vacuum reservoir in engine compartment to vacuum valve rail -N53-
- Vacuum valve rail connect ion with black marking
5 - Vacuum valve rail -N53-
- Connections for vacuum hoses have colored markings
6 - Vacuum hose
- From Vacuum valve rail -N53- to center vent vacuum unit
- Vacuum valve rail connection with yellow marking
7 - Central flap vacuum unit
8 - Engine coolant two-way vacuum valve -N147-
- Shuts off vacuum flow when no voltage is present.
- After attaching vacuum hoses, check:
- When connected the vacuum unit must pull in if voltage and vacuum are present.
- When connected the vacuum unit is vented if vacuum is present and voltage is not.
9 - Vacuum hose
- From -N147- to coolant cut-off valve
10 - Coolant shut-off valve
- Switched by vacuum from two-way valve -N147- when engine is running
11 - One-way valve
12 - To intake manifold
13 - To brake booster