Adblue dosing unit air valve click test
This function is used to check the dosing unit's air valve.
Note:
At activation and deactivation of the air valve, a clicking sound should be heard.
Test conditions:
Engine off.
Ignition on.
Parking brake applied.
No active faults in the dosing unit's air valve.
Procedure:
Start the function.
Check test conditions.
Select to activate/deactivate air valve.
Listen for a clicking sound.
Function complete.
If the function fails, check the test conditions and repair any faults.