Volkswagen CC 2012 Workshop Manual page 63

♦ Hose clamps to 25 mm - 3094-
The plug-in connectors for fuel, vacuum and breather lines are
colour coded. There is either a coloured dot on the plug-in con‐
nector or the release button is coloured.
Plug-in connector
Fuel supply
Fuel return line
Breather
Vacuum
Test conditions
• A leak has been detected by the fuel system diagnostic pump
- V144- .
• Guided fault finding has been performed with the vehicle di‐
agnostic tester .
Preparation of fuel system tester - KLI 9210- :
Note
The appearance of the fuel system tester - KLI 9210- may differ
depending on the version.
– Check on fuel system tester - KLI 9210- whether there is
enough fluid in smoke generator.
– Set valve -D- to "Hold".
– Open nitrogen bottle -H-.
– Connect test hose -G- to self-test connection -B-.
– Set valve -D- to "Test".
– Set pressure to 10 in. H2O (25 mbar) with pressure reducer
-J-.
– Set valve -D- to "Hold".
– Now pressure must be maintained for at least 2 minutes.
Check tester if pressure is not maintained.
Checking fuel system for leaks:
CC 2012 ➤ , Passat 2011 ➤ , Passat Variant 2011 ➤
Fuel supply system, petrol engines - Edition 05.2019
Colour code on plug-in connec‐
tor
black
blue
White, beige
green
5. Activated charcoal filter with fuel tank leak detection
59