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.
Note:
To check the EGR system. The EGR valve opens and closes alternately at ten-second intervals.
Procedure:
Choose the EGR system function.
Note in the relevant value column that the EGR valve is working.