This function shall be performed before removal of pump module, measuring module, or dosing valve.
The function performs the following:
Emptying of AdBlue circuit.
Test of return line.
Test of emptying valve.
there shall be at least 8 bar pressure in the air tanks before this function is run.
Test conditions:
Ignition on, engine off.
Procedure:
Start the function.
Follow the instructions in the program.
The function is done.
If the function fails, check the test conditions and repair any faults.