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CC 2012 ➤ , Passat 2011 ➤ , Passat Variant 2011 ➤
Fuel supply system, petrol engines - Edition 05.2019
– First check activated charcoal filter solenoid valve 1 - N80- for
leaks. To do this, clamp off hose to activated charcoal filter
solenoid valve 1 - N80- using hose clamps, up to Ø 25 mm -
3094- -arrow-.
– Repeat pressure test; to do this, set valve -D- to "Test" again.
– Observe pressure gauge and flow meter. When flow rate de‐
creases and pressure increases to 10 in. H2O (25 mbar), fuel
system is filled.
– Once the pressure has stabilised, set valve -D- to "Hold".
– If pressure does not drop again, renew activated charcoal filter
solenoid valve 1 - N80- .
If pressure still drops, perform "leak detection in fuel system" test
⇒ "5.3.2 Leak detection in fuel system", page 62
After completing work with vehicle diagnostic tester , perform gui‐
ded function "Checking fuel tank ventilation system for leaks".
5.3.2
Leak detection in fuel system
Test conditions
•
Procedure for "checking fuel system for leaks" has been com‐
pleted
⇒ "5.3 Checking fuel system for leaks", page 58
•
Fuel system tester - KLI 9210- is connected to vehicle via
adapter hose - KLI 9210/55-1- .
– Connect fuel system tester - KLI 9210- to vehicle battery.
– Remove rear right wheel housing liner ⇒ General body re‐
pairs, exterior; Rep. gr. 66 ; Wheel housing liner; Assembly
overview - rear wheel housing liner .
62
Rep. gr.20 - Fuel supply system
.
.
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