fuse AUDI A4 1997 B5 / 1.G APB Engine Evaporative Emission Syst

24-136

Checking voltage supply to Evaporative
Emission (EVAP) Canister Purge Regulator
Valve (solenoid valve)

Note:
The Evaporative Emission (EVAP) Canister
Purge Regulator Valve receives its power supply
via the fuel pump relay.

Test requirements

Fuse for EVAP valve OK

- Disconnect harness connector on Evaporative
Emission (EVAP) Canister Purge Regulator
Valve -N80.

The diode test lamp should light up.
If diode test lamp does not light up:
Electrical Wiring Diagrams, Troubleshooting & Component Locations - Connect VAG1527 diode test lamp between engine Ground (GND) and
socket 1 on connector.
- Operate starter.
- Check continuity of wiring from socket 1 to fuel pump relay via fuse.
Repair open circuit if necessary.
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porative Emission
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