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4.2.3 HC test
It checks the presence of hydrocarbons inside the gas sampling probe.
Warning: do not insert the gas sampling probe in the vehicle exhaust pipe
during this test.
4.2.4 Leak test
It checks the analyzer pneumatic seal by creating a vacuum in the pneumatic
circuit.
To carry out the test in automatic mode, the user shall close the sampling
probe and wait for a few seconds.
Should the test result be negative, then the instrument will not start the
Official Test or the Mandatory emission test.
4.2.5 Test execution
Follow the displayed instructions.
Once the gas sampling probe has been introduced, the programme
automatically displays the steps to be followed.
Bring the engine rpm to the indicated range and wait for the gas stabilization.
At the end of the test, if the engine rpm values have not been properly
detected, it is necessary to enter them manually.
The test result is displayed at the end of it.
Press the key
↵
to go on.
RESULT AT IDLE SPEED: R
COc=0.1 % < 0.3 %
RESULT AT MIN ACC: R
COc=0.1 % < 0.2 %
λ
=1.002 0.97-1.03