Trionic T7 OBD II

To remove






1 Undo the hose clip between the connecting hose and the turbo inlet pipe.
2 Unplug the connector from the mass air flow sensor.
3 Detach the mass air flow sensor cable from the cable clips on the top of the air collection box.
4 Remove the top of the air collection box by undoing the snap fasteners and the 4 screws.
5 Lift off the top of the air collection box.
6 Detach the hose from the mass air flow sensor by undoing the clip.






7 Remove the mass air flow sensor, 2 screws.

To fit






1 Apply acid-free vaseline, part no. 30 05 665, to the rubber seal on the mass air flow sensor. Change the rubber seal if necessary.
2 Fit the mass air flow sensor, 2 screws.


IMPORTANT
The mass airflow sensor must be fitted in the intake air pipe with the arrows in the direction of flow.


3 Fit the hose to the mass air flow sensor.
4 Fit the top of the air collection box, snap fasteners and screws.







5 Attach the connecting hose to the turbo inlet pipe.
6 Plug in the mass air flow sensor connector after first spraying it with Kontakt 61, part no. 30 21 763.
7 Fasten the mass air flow sensor cable to the cable clips on the top of the air collection box. Adjust the cable so that it cannot be pinched or chafed.