Digital Diesel Electronics (DDE) Fault Symptoms

Suspect links to be verified in this testing procedure indicate possible faults in the following diesel functions based on the symptoms:

High-pressure pump

Electronic vehicle immobilization

Power supply for main relay

Crankshaft sensor

Air mass system test

Particulate filter

Engine cooling

Engine speed detection

Combustion preheating system

Smooth running control

Pedal-position sensor

Charge-air pressure controller

Presupply pump

Exhaust-gas recirculation system

Rail pressure control

ON delay

Injector volume calibration

...

To acquire additional information on the causing faults, adaptation/calibration values can be read out.