Manual Air Conditioning

NOTES:

- 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).
- Image shows vehicle with engine. code AES






1- Fresh air/recirculating flap vacuum unit
2- Vacuum supply to rear passenger compartment ventilation unit (if fitted).
3- Fresh air/recirculating flap two-way valve -N63-
Controls vacuum flow to fresh air/recirculating flap vacuum unit.

Replacing:
- Remove glove compartment, knee padding or passenger side airbag unit.

After attaching vacuum hoses, check:
- The fresh air/recirculating flap vacuum unit must pull in if vacuum and voltage are present at -N63-.
- The fresh air/recirculating flap vacuum unit is vented if vacuum is present and voltage is not (switched off).

4- Vacuum unit connection
5- Intake manifold connection
6- 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.

7- Vacuum hose
From -N147- to coolant cutoff valve
8- Coolant cut-off valve
Switched by vacuum from two-way valve -N147- when engine is running
9- One-way valve
10- From brake booster vacuum hose connection
Only on engine, code AAB
11- Vacuum unit
Only on engine, code AAB
12- To intake manifold
13- To brake booster
14- Vacuum reservoir
15- Vacuum hose
From vacuum reservoir in engine compartment to fresh air/ recirculating flap vacuum unit