Volkswagen Passat 1995 Official Factory Repair Manual page 2049

EVAP canister system
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.FU08.20.2
Work sequence
- Remove right rear wheelhousing liner.
- Disconnect 3-pin connector of Leak Detection
Pump (LDP) -V144-.
Checking resistances
- Measure resistance between terminals 1 + 3 of
diagnostic pump.
Specified value: 640 to 720
- Measure resistance between terminals 2 + 3 of
diagnostic pump.
Specified value: 12.0 to 20.0
If specified values are not obtained:
- Replace Leak Detection Pump (LDP) -V144-
Page 20-34 , item 11
- Erase DTC memory of Engine Control Module
(ECM) Page ST-25
Reset/erase diagnostic data.
- Generate readiness code
If specified values are obtained:
- Check wires according to wiring diagram
20-48 .
Page 20 of 22
, Diagnostic mode 4:
Page ST-50 .
20-47
Page
12/6/2004