Suzuki GW250 Service Manual page 48

2-32 PERIODIC MAINTENANCE
Example of trouble
Three data; value 3 (current data 3), value 2 (past data 2) and value 1 (past data 1); can be made in compar-
ison by showing them in the graph. Read the change of value by comparing the current data to the past data
that have been saved under the same condition, then you may determine how changes have occurred with
the passing of time and identify what problem is currently occurring.
With DTC not output, if the ISC valve stepping position is found to be abnormal than the data saved previ-
ously, the possible cause may probably lie in the hardware side such as ISC valve air inlet hose crumple,
bend, etc.
Abnormal value of ISC valve position.
No DTC output