HHT mask
Acceptance pattern
Shown on engine 611
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CDI Actual values 3/3
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09 Engine speed
750 rpm 750 rpm
10 Smooth-running correction
Cyl. 1 0.38
Cyl. 3 -0.48
Cyl. 4 0.08
Cyl. 2 -0.02
Specified Stop
value <>
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HHT mask
Rejection pattern
Shown on engine 611
Fault on cylinder 2
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CDI Actual values 3/3
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09 Engine speed
750 rpm 750 rpm
10 Smooth-running correction
Cyl. 1 -0.35
Cyl. 3 -2.53
Cyl. 4 -1.66
Cyl. 2 4.50
Specified Stop
value <>
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Test to be conducted using HHT
The smooth-running correction is located under actual values, check neutral
Smooth-running correction
If the correction value of one or more of the cylinders increases to +4.5 ME (limit value), these cylinders are to be checked in the "irregular operation" selection for signs of a drop in speed.