Evaporative Emission (EVAP) canister purge regulator valve 1, checking
WARNING: This page is about a different variant/trim than selected.
Solenoid valve is closed when no voltage is present.
Recommended special tools and equipment
- V.A.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:
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
- 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).
Fig 3: Checking Evaporative Emission Canister Purge Regulator Valve N80 Internal Terminals 1 And 2 For Resistance
- Check resistance between terminals of solenoid valve.
Specified value: 22.0 to 30.0 Ω
If specified value is not obtained:
- Replace Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-.
NOTE:
Note installation position: Arrow on the valve points in direction of flow
- Erase DTC memory of Engine Control Module (ECM). Refer to Diagnostic mode 4: Reset/erase diagnostic data
- Generate readiness code. Refer to Readiness code, generating
If specified value is obtained:
- Check wires to control module according to wiring diagram. Refer to Evaporative Emission (EVAP) canister purge regulator valve 1, checking .
Check wires to control module
- Connect test box to control module wiring harness. Refer to Test box, connecting for wiring test
Vehicles with engine code AFP
- Check wire between test box socket 64+2-pin connector terminal 2 for open circuit according to wiring diagram.
Wire resistance: max. 1.5 Ω
Vehicles with engine codes BDF and BJS
- Check wire between test box socket 64+2-pin connector terminal 2 for open circuit according to wiring diagram.
Wire resistance: max. 1.5 Ω
Continuation for all vehicles
- Also check the wire for short circuit to B+ and Ground (GND).
Specified value: ∞ Ω
- 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 Ω
- Erase DTC memory of Engine Control Module (ECM). Refer to Diagnostic mode 4: Reset/erase diagnostic data
- Generate readiness code. Refer to Readiness code, generating
If no malfunctions are found in wires:
- Replace Motronic Engine Control Module (ECM) -J220-. Refer to Engine Control Module (ECM), replacing .