Activating Evaporative Emissions (EVAP) canister purge regulator valve N80

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Press → button.

Indicated on display

Output Diagnostic Test Mode ->
EVAP canister purge regulator valve N80

The Evaporative Emissions (EVAP) canister purge regulator valve N80 must click until the next component is activated by the pressing → button.

If the valve clicks, but a malfunction is still suspected (valve does not open or close):

Disconnect hose from pressure retention valve from solenoid valve.
Connect an auxiliary hose to vacant valve connection.
Blow into auxiliary hose during output DTM in direction of throttle valve control module. Valve must open and close.

If the solenoid valve does not click:

Fig 1: Evaporative Emissions Canister Purge Regulator Valve N80

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

Fig 2: Checking Voltage Of 2-Pin Connector Of Evaporative Emissions Canister Purge Regulator Valve

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect Voltage tester VAG 1527B using adapter cables from VW 1594 to disconnected harness connector. LED must flash (bright/darker).

If LED flashes:

Proceed with output DTM until completed.
Switch ignition off.
Replace Evaporative Emissions (EVAP) canister purge regulator valve N80. → 20 - FUEL SUPPLY
Check DTC memory. If necessary, repair any malfunctions and erase DTC memory → Diagnostic Trouble Code (DTC) memory, checking and erasing (scan tool functions 02 and 05) .

Display readiness code → Readiness code (function 15), displaying . If DTC memory has been erased, the readiness code must be generated again → Readiness code (function 15), generating .

If LED does not flash:

Proceed with output DTM until completed.
Switch ignition off.
Remove wiper arms and plenum chamber cover. → 92 WINDSHIELD WIPER & WASHER SYSTEM

Fig 3: Identifying Test Box V.A.G 1598/31 Connected To Control Module Wiring Harness

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Connect Test box VAG 1598/31 to control module wiring harness. Engine control module is not connected by this action.

Fig 4: 2-Pin Electrical Harness Connector & Terminals

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Check wire for open circuit between test box sockets 64 and 2-pin harness connector terminal - 2 - using wiring diagram. Wire resistance: max. 1.5 Ω
Additionally, check wire for short circuit to battery positive (B+) and Ground (GND). Specified value: ∞ Ω
Check wire between 2-pin connector terminal - 1 - and Fuel Pump (FP) relay J17 for open circuit using wiring diagram. Wire resistance: max. 1.5 Ω

If no wiring malfunction is detected:

Replace Motronic Engine Control Module (ECM) J220 → Engine Control Module (ECM), replacing .