It is common that the reductant, form crystals over the nozzle of the reductant injection. This function is used to dissolve the crystals and restore the correct flow pattern.
The function may need to be performed several times to dissolve the crystals and restore the correct flow pattern.
The function takes about 9 minutes.
Note:
The diesel exhaust fluid is corrosive. Make sure it does not come in contact with skin, eyes or the vehicle's finish. For more safety information, refer to the label on the diesel exhaust fluid container.
Test prerequisites:
Ignition on, engine off.
Reductant temperature above -7 °C (19,5 °F).
Container with graduated scale to collect the diesel exhaust fluid from the reductant injection.
Procedure:
Remove the reductant injection from the exhaust pipe which leaves the connected reductant line.
Point the injector at an approved container.
Start the function.
Note injection pattern and reductant mist.
Exit the function.
If the function fails, check the following:
Check if the injection lines are damaged, throttled or clogged.
If a problem is found, it should be repaired as required.
If no problem is found, replace the reductant injection.
If the function works:
Point the injector at a container with graduated scale.
Start the function.
The injector should flow 51,5 ml (0,054 qts). The tolerance is +/- 1,5 ml (0,0016 qts).
Exit the function.
If less than 51,5 ml:
Disconnect the reductant injection from the supply line.
Point the reductant injection supply line at the container with the graduated scale.
Start the function.
If less than 51,5 ml, check the reductant injection and supply line for damage or throttles.
If more than 51,5ml, replace the reductant injection.