Canister Purge Control Valve: Testing and Inspection

Evaporative Emission (EVAP) Canister Purge Regulator Valve, Checking

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

Requirements







- The respective fuses of Evaporative Emission (EVAP) canister purge regulator valve -N80- must be OK.
- Fuel Pump (FP) relay -J17- must be OK, check.
- Ignition switched off.

Work sequence







- Disconnect 2-pin connector from Evaporative Emission (EVAP) canister purge regulator valve -N80- (arrow).







- 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. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

If specified value is obtained:
- Connect test box to control module wiring harness. connect test box for wiring test. Test Box, Connecting For Wiring Test

Vehicles with engine code AEG







- 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

Vehicles with engine code AVH, AZG, BDC, BEV, BGD







- 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

Continued for all vehicles
- Check the wire for short circuit to B+ and Ground (GND).

Specified value: Infinite Ohms

- Check wire between 2-pin connector terminal 1 and 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). Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

If no malfunctions are found in wires:
- Replace Motronic Engine Control Module (ECM) -J220-.