Evaporative Emission (EVAP) Canister Purge Regulator Valve, Checking

Evaporative Emission (EVAP) Canister Purge Regulator Valve 1, Checking

Solenoid valve is closed when no voltage is present.

Recommended special tools and equipment
- VA.G 1526 multimeter or V.A.G 1715 multimeter
- V.A.G 1594 connector test kit
- Wiring diagram

Test requirements

- The respective fuses of Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- must be OK:
- Fuel Pump (FP) Relay -J17- must be OK, check:
- Ground (GND) connections between engine and chassis must be OK.
- Ignition switched off.

Test sequence

Vehicles with engine code APH

- Disconnect 2-pin connector from Evaporative Emission (EVAP) canister purge regulator valve -N80- (arrow).

Vehicles with engine code AWP, AWV, BKF, BNU

- Disconnect 2-pin connector from Evaporative Emission (EVAP) canister purge regulator valve -N80- (arrow).

Continue for all vehicles

Checking resistance

- Check resistance between terminals of solenoid valve.

Specified value: 22.0 to 30.0 Ohms

If specified value is not obtained:
- Replace Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-.
- Erase DTC memory of Engine Control Module (ECM). Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

If specified value is obtained:
- Check wires to control module according to wiring diagram.

Check wires to control module
- Connect test box to control module wiring harness. connect test box for wiring test. Test Box, Connecting For Wiring Test

Vehicles with engine code APH

- Check wires between test box and 2-pin connector to Engine Control Module (ECM) for open circuit according to wiring diagram.

Terminal 2 + socket 64

Wire resistance: max. 1.5 Ohms

Continue for all vehicles
- Check the wire for short circuit to B+ and Ground (GND).

Specified value: Infinite Ohms

- Check wire between 2-pin connector terminal 1 and the Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.

Wire resistance: max. 1.5 Ohms

- Erase DTC memory of Engine Control Module (ECM). Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

If no malfunctions are found in wires:
- Replace Motronic Engine Control Module (ECM) -J220-.