EVAP Canister Purge Regulator Valve 2, Checking

Diagnostic Procedures



EVAP Canister Purge Regulator Valve 2, Checking

Solenoid valve is closed when no voltage is present.

Special tools, testers and auxiliary items required

• Hand multimeter (V.A.G 1526) or Multimeter (V.A.G 1715)

• Test adapter kit (V.A.G 1594)

• Wiring diagram

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

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

• Ignition switched off.

• Fuses in right instrument panel fuse holder must be OK:

Right instrument panel fuse holder





Test Sequence

Observe safety precautions => [ Safety Precautions ] Safety Precautions.

Observe rules for cleanliness => [ Clean Working Conditions ] Clean Working Conditions.

- Remove 2-pin connector from Evaporative Emission (EVAP) Canister Purge Regulator Valve 2 (N333) at installation location,

Check resistance

- Check resistance between terminals of solenoid valve. Specification: 24.0 to 28.0 ohms





If specification is not obtained:

- Replace Evaporative Emission (EVAP) Canister Purge Regulator Valve 2 (N333), refer to Repair Manual

- Erase DTC memory of Engine Control Module (ECM) => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 09, Diagnostic mode 4: Reset/erase diagnostic data.

- Generate readiness code => [ Readiness Code, Generating ] Monitors, Trips, Drive Cycles and Readiness Codes.

If specification is obtained:

- Check wires to control module according to wiring diagram, refer to Repair Manual.

Check wires to control module

- Connect test box to Engine Control Module (ECM) 2 (J624) wiring harness on connecting test box for wiring test.

- Check wire between test box socket 64 + terminal 2 of 2-pin connector for open circuit according to wiring diagram. Wiring resistance: max. 1.5 ohms





- Check wire for short circuit to B+ and Ground (GND). Specification: infinite ohms

- Check wire between 1-pin connector terminal 2 and Motronic Engine Control Module (ECM) Power Supply Relay (J271) for open circuit according to wiring diagram. Wiring resistance: max. 1.5 ohms

- Erase DTC memory of Engine Control Module => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 09, Diagnostic mode 4: Reset/erase diagnostic data.

- Generate readiness code => [ Readiness Code, Generating ] Monitors, Trips, Drive Cycles and Readiness Codes.

If no fault is detected in the wiring:

- Replace Engine Control Module (ECM) 2 (J624).