Passat Sedan L4-1781cc 1.8L Turbo (AEB) (1999)
EVAP Canister Purge Regulator Valve: Testing and Inspection
EVAP Canister Purge Regulator Valve 1 -N80-, Checking
In a no-current situation the solenoid valve is closed.
Special tools and equipment
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V.A.G 1551 Scan Tool or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3
Checking conditions
-
Coolant temperature at least 80 °C
-
Fuse 29 must be OK.
Functional check
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Connect V.A.G 1551 (V.A.G 1552). Start engine and select engine control module with the "Address word" 01.
Indicated on display
Rapid data transfer
HELP
Select function XX
-
Press -0- and -8- buttons to select "Read measured value block" function and confirm entry with -Q- button.
Indicated on display
Read Measuring Value Block
HELP
Input display group number XXX
-
Press -0-, -7- and -0- buttons to select "Display group number 70" and confirm entry with -Q- buttons.
Indicated on display (1 to 4 Display fields)
Read Measuring Value Block 70 ->
1
2
3
4
-
Press button -4- to select "Basic setting" function ("Tank venting valve diagnosis" will be initiated).
NOTE: The engine must not be loaded during this diagnosis because the diagnosis will be interrupted and will not be started again until the engine is
rewed-up.
Indicated on display (1-4 = display fields)
System in basic setting 70 ->
1
2
3
4
When the diagnosis is initiated by the engine control module, the display in display field 4 jumps from "Test OFF" to "Test ON".