EVAP Canister Purge Regulator Valve 1, Checking

Diagnostic Procedures

EVAP Canister Purge Regulator Valve 1, Checking

Solenoid valve is closed when no voltage is present.

Special tools, testers and auxiliary items required

• Multimeter (VAG1526) or multimeter (VAG1715)

• Connector test kit (VAG1594)

• Wiring diagram

Test requirements

• Fuses in E-box (in plenum chamber, left) must be OK:





• Motronic Engine Control Module (ECM) Power Supply Relay (J271) must be OK, check:

• Ground (GND) connections between engine and chassis must be OK.

• Ignition switched off.

Test sequence

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





Checking resistance

- 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) , Diagnostic mode 4: Reset/erase diagnostic data.

- Generate readiness code.

If specified value is obtained:

- Check wires according to wiring diagram.

Checking wiring

- Connect test box to control module wiring harness , connect test box for wiring test.

- 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: infinite ohms

- Check wire between 2-pin connector terminal 1 and Motronic Engine Control Module (ECM) Power Supply Relay (J271) 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.

- Generate readiness code.

If no malfunctions are found in wires:

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