Checking activated charcoal canister solenoid valve 1: VW 1.6 (AYD, BFS)

BFS
In a no-current situation the solenoid valve is closed.

Checking activation:

=> Repair group 01; Final control diagnosis; Performing final control diagnosis
4-Cyl. Injection Engine (2 Valve, Roller Rocker Finger), Mechanics
Final control diagnosis
Performing final control diagnosis

Special tools, workshop equipment, testers, measuring instruments and auxiliary items required

V.A.G 1551 Fault reader

Note:

The vehicle system tester V.A.G 1552 can be used instead of the fault reader V.A.G 1551, however a print-out is not possible.

Test prerequisites

Coolant temperature must be at least 80 °C, =>display group 04, display zone 3.

Fuse 43 must be OK.

Functional check

Connect fault reader V.A.G 1551 (V.A.G 1552). Start engine and select "Address word" 01 of engine control unit. Connect fault reader and select engine control unit:

=> Repair group 01; Self-diagnosis general: Connect fault reader V.A.G 1551 and select engine electronics control unit.
4-Cyl. Injection Engine (2 Valve, Roller Rocker Finger), Mechanics
Self-diagnosis general: Connect fault reader V.A.G 1551 and select engine electronics control unit.

Rapid data transfer
HELP
Select function XX
Indicated on display:

Press keys 0 and 4 for function "Initiate basic setting" and confirm entry with Q key.

Basic setting
Input display group number XXX
Indicated on display:

Press keys 0, 0 and 7 for "Display group number 70" and confirm entry with Q key.

Note:

The engine must not be loaded during this diagnosis, if this occurs the diagnosis will be interrupted and will not start again until the engine is revved up.

System in basic setting 70
⇒
1
2
3
4
Indicated on display:
(1...4 = display zones)

When the diagnosis is initiated by the engine control unit, the display in display zone 4 jumps from "Test OFF" to "Test ON"

Leave the engine running at idle until the result of brief diagnosis is displayed
Specification: "TBV OK"

Note:

TBV stands for tank breather valve (activated charcoal canister system solenoid valve 1).

If the display jumps from "Test ON" to "Test OFF" during the test, rev up briefly and the test will be repeated.

If "TBV n. OK" appears in display zone 4:

Initiate final control diagnosis and activate the activated charcoal canister solenoid valve -N80-:

=> Repair group 01; Final control diagnosis; Performing final control diagnosis
4-Cyl. Injection Engine (2 Valve, Roller Rocker Finger), Mechanics
Final control diagnosis
Performing final control diagnosis

If the specification "TBV OK" is obtained:

Press the ⇒key.

Rapid data transfer
HELP
Select function XX
Indicated on display:

Press keys 0 and 6 for the "End data transfer" function and confirm input with the Q key.
Switch off ignition.