Evaporative Emission (EVAP) Canister Purge Regulator Valve 1, Checking
Evaporative Emission (EVAP) Canister Purge Regulator Valve 1, Checking
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
- Corresponding fuses on E-box in engine compartment, left side, for Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- must be OK.
NOTE: Fuses on this fuse holder are labelled "SB" in the wiring diagram.
- Ground (GND) connections between engine and chassis must be OK.
- Ignition switched off.
Test sequence
Observe safety precautions.
Observe rules for cleanliness.
- Disconnect 2-pin connector from Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-.
Checking resistance
- Check resistance between terminals of solenoid valve.
Specified value: 20.0...30.0 ohms
If specified value is not obtained:
- Replace Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-.
Note installation position: Arrow on the valve points in direction of flow.
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 04 - Erase DTC Memory
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes
If specified value is obtained:
- Check wires to Engine Control Module (ECM) according to wiring diagram.
Checking wires to Engine Control Module (ECM)
- Connect test box to 60-pin connector of wiring harness, connecting test box for wiring test. Test Box, Connecting For Wiring Test
Engine Control Module (ECM) is not connected.
- Check wire between test box and 2-pin connector to Engine Control Module (ECM) for open circuit according to wiring diagram.
Terminal 2 + socket 5
Wire resistance: max. 3.0 ohms
- Also check the wire for short circuit to B+ and to Ground (GND).
Specified value: infinity ohms
- Check wire between 2-pin connector terminal 1 and fuse holder for open circuit according to wiring diagram.
Wire resistance: max. 3.0 ohms
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 04 - Erase DTC Memory
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes
If no malfunctions are found in wires:
- Replace Engine Control Module (ECM) -J623-.