Evaporative Emission (EVAP) Canister Purge Regulator 1, Checking
Evaporative Emission (EVAP) canister purge regulator valve 1, checking
Solenoid valve is closed when no voltage is present.
Recommended special tools and equipment
- V.A.G1526 multimeter or V.A.G1715 multimeter
- V.A.G1594 connector test kit
- Wiring diagram
Test requirements
- The respective fuses of Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- must be OK.
- 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-.
- 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:
- Check wires according to wiring diagram.
Checking wiring
- Connect test box to control module wiring harness.
Vehicles > 08.99
- Check wire between 2-pin connector terminal 1 and Fuel Cut-Off Valve Shut-Off Relay -J335- for open circuit according to wiring diagram.
Wire resistance: max. 1.5 ohms
- Check wire between 2-pin connector terminal 2 for open circuit according to wiring diagram.
Wire resistance: max. 1.5 ohms
- Erase DTC memory of Engine Control Module (ECM).
- Generate readiness code.
If no malfunctions are found in wires:
- Replace Motronic Engine Control Module (ECM) -J220-.
Vehicles 09.99 >
- Check wire between test box socket 15 + 2-pin connector terminal 2 for open circuit according to wiring diagram.
Wire resistance: max. 1.5 ohms
- 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).
- Generate readiness code.
If no malfunctions are found in wires:
- Replace Motronic Engine Control Module (ECM) -J220-.