Vacuum Pipe Connection Diagram
WARNING: This page is about a different variant/trim than selected.
CAUTION:
There is a risk that an engine malfunction may occur.
- When routing the vacuum lines, make sure they are not kinked, twisted or pinched.
NOTE:
Red = vacuum diaphragm supply line.
Blue = control line to the intake manifold runner control vacuum actuator.
Orange = control line to the left Secondary Air Injection (AIR) combination valve.
Brown = control line to the right AIR combination valve.
Green = Control line for switchable coolant pump.
- Secondary Air Injection Solenoid Valve -N112-
- Intake Manifold Runner Control Valve -N316-
- Secondary Air Injection Solenoid Valve 2 -N320-NOTE:
Depending on the version, not installed on NAR vehicles.
- To Brake Booster
- Distribution Piece with Closure Cap
- Left Secondary Air Injection Combination Valve
- Check Valve
- Vacuum Pump
- Cylinder Head Coolant Valve -N489-
- Vacuum Diaphragm
- For intake manifold flap at cylinder bank 2 (left)
- Coolant Pump
- Check Valve
- Vacuum Diaphragm
- For intake manifold flap at cylinder bank 1 (right)
- Right Secondary Air Injection Combination Valve
NOTE:
Follow the guidelines for clean working conditions. Refer to FUEL SUPPLY, INJECTION SYSTEM AND CHARGING SYSTEM, CLEAN WORKING CONDITIONS .
Before testing or performing a repair, check all air guide pipes and hoses and all vacuum lines for leaks and secure seating.