Evaporative Emission (EVAP) Canister Purge Regulator Valve, Checking

Evaporative Emission (EVAP) canister purge regulator valve, checking

Solenoid valve is closed when no voltage is present.

Recommended special tools and equipment
- VAG 1526 multimeter or VAG 1715 multimeter
- VAG 1594 connector test kit
- Wiring diagram

Test requirements






- The respective fuses of Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- must be OK.
- Ignition switched off.

Test sequence






- Disconnect 2-pin connector -1- from Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- (-2-).






- Measure 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).

- Generate readiness code.

If specified value is obtained:

- Connect test box to control module wiring harness.






- Check wire between test box socket 64 & 2-pin connector terminal 2 for open circuit according to wiring diagram.

Wire resistance: max: 1.5 Ohms

- Also check the wire for short circuit to B+ and Ground (GND).

Specified value: Infinity 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

If no malfunctions are found in wires:

- Replace Motronic Engine Control Module (ECM) -J220-.