display AUDI A4 1996 B5 / 1.G APB Engine Evaporative Emission Syst

24-134


Evaporative Emission (EVAP)
system, checking

Evaporative Emission (EVAP) Canister
Purge Regulator Valve -N80, checking


Checking for leaks
If there is no electrical signal (not activated) the
solenoid valve remains closed.

- Disconnect hoses from Evaporative Emission
(EVAP) Canister Purge Regulator Valve -N80.

- Start output Diagnostic Test Mode and select
Evaporative Emission (EVAP) Canister Purge
Regulator Valve -N80 Page 01
-75
.
Output Diagnostic Test Mode EVAP canister pur
ge re
gulator valve -N80

Indicated on display
The valve should click and should open and close (test by blowing into
auxiliary hose).
- If valve does not click, carry out electrical test of Evaporative Emission
(EVAP) Canister Purge Regulator Valve Page 24
-135
.
- If valve does not open and close properly, replace Evaporative
Emission (EVAP) Canister Purge Regulator Valve.
Pa
ge 1 of 6 Eva
porative Emission
(EVAP
) system, checkin
g
11/22/2002 htt
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