Preconditions for the test:
Engine idling.
No faults stored.
Engine temperature above 80 °C.
All electrical loads switched off.
Gear selector set to P/N.
Induction air temperature below 60 °C.
Note:
To check the EGR system.
Procedure:
Choose the EGR system function.
Revs up five times to max engine speed.
The value in the EGR system adaption status column must change from ”Test off” to ”Test on”. Let the engine idle until the value changes to ”System OK!/System not OK!”.
Required values at test: Induction manifold pressure 240-420 mbar; induction manifold pressure difference between open and closed EGR valve at least 50 mbar.