Activating Evaporative Emissions (EVAP) canister purge regulator valve N80

• 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:

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

• 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

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

• 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  .