Radiator Cap

BE20.30-P-1000-01A Test values for cooling system cap

Cap of radiator or expansion reservoir:

Cap for radiator or expansion reservoir:

Cap for radiator or expansion reservoir:

Diagnosis

Diagnosis using the HHT

Activation applications:

Diagnosis

Diagnosis using the HHT

Activation applications:

Activation functions:

Activation functions:

Additional information to the actual value screens:

Compression Testing
Compression can be tested as an input using the HHT.

A mechanical problem may be present if the difference in engine speed is > 8 rpm for engines 104/112/113, and > 5 rpm for engine 111.

Any engine speed difference will not present itself in the same manner in all engines, so no conclusions can be drawn concerning the affected cylinder.

If the engine speed difference is greater than the set value, perform a compression/cylinder leakage test to determine the affected cylinder.

Compression testing:

Cylinder balance test
The cylinder balance test must be performed at idle. If the misfire recognition shutoff threshold is exceeded, a fault will be stored and at the same time the fault count will increases. After repairs, clear the diagnostic memory.

Cylinder balance test:

Ignition circuit shutoff
Ignition circuit shutoff can only be performed on Motor 113.

Ignition circuit shutoff: