A4 Sedan L4-1.8L Turbo (AEB) (1997)
-
Connect multimeter US 1119 (Fluke 83 or equivalent) and check resistance at across valve terminals.
Specified value: 22 - 30 Ohms
If resistance is NOT OK:
-
Replace EVAP canister purge regulator valve
Checking EVAP canister purge regulator valve voltage supply
Test conditions
-
Fuse for EVAP canister purge regulator valve OK.
-
Disconnect harness connector from EVAP canister purge regulator valve.
-
Connect VAG 1527B LED voltage tester between connector terminal 1 and engine Ground.
-
Operate starter motor. Specified value: LED must light up
If LED test light does not light:
-
Check wiring for open circuit between connector terminal 1 and fuse, according to wiring diagram. Repair if necessary.
If wiring is OK:
-
Check fuel pump relay. See: Fuel Delivery and Air Induction/Fuel Pump/Fuel Pump Relay/Testing and Inspection
Checking signal to EVAP canister purge regulator valve