Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 , checking
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2006 Volkswagen GTI, 2005 Volkswagen Jetta, 2005 Volkswagen GTI, 2004 Volkswagen Jetta, and 2004 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.
Solenoid valve is closed when no voltage is present.
Check activation.
Special tools, testers and auxiliary items required
- Fault Read Out Device V.A.G 1551 or Vehicle Diagnosis, Testing and Information System VAS 5051
Test conditions
- Coolant temperature must be at least 80 ° C,, refer to Display group 04, display field 3
- Fuse no. 43 must be OK.
Function test
- Connect Fault Read Out Device V.A.G 1551 and select engine electronics control module with "Address word 01". Engine must run at idle for this. Connect fault read out device and select engine control module.
Scan tool display:
| Quick data transfer HELP Select function XX |
- Press buttons 0 and 8 for function "Reading measuring value blocks" and press Q button to confirm input.
Scan tool display:
| Read measuring value block Enter display group number XXX |
- Press buttons 0 7 and 0 for "Display group number 70" and press Q button to confirm input.
Scan tool display: (1 to 4 = display fields)
| Read measured value block 70 -> 1 2 3 4 |
- Press button 4 for "Basic Setting" function ( "Tank ventilation valve diagnosis" is initiated)
NOTE:
- During this diagnosis, engine load must not be generated or diagnosis will be terminated and can only be re-initiated after pressing accelerator pedal.
Scan tool display: (1 to 4 = display fields)
| System in basic setting 70 -> 1 2 3 4 |
If diagnosis is initiated by engine control module, display in display field 4 goes from "Test OFF" to "Test ON".
- Allow engine to continue running at idle until specified value "TEV OK" is shown in display field 4.
NOTE:
- TEV means (tank ventilation valve) (solenoid valve 1 for EVAP canister)
If "TEV not OK" is shown in display field 4:
- Initiate diagnostic output mode (DTM) and activate Evaporative Emission (EVAP) Canister Purge Regulator Valve N80.
- Check DTC memory.
- Read readiness code.
- If DTC memory was cleared or engine control module disconnected from voltage supply, readiness code must be regenerated.
If specified value "TEV OK" is reached:
- Press the → key.
Scan tool display:
| Quick data transfer HELP Select function XX |
- Press buttons 0 and 6 for function "End output" and press Q button to confirm input.
- Switch off ignition.