Suzuki Intruder VZ1500 Service Manual page 86

1A-19 Engine General Information and Diagnosis:
Example of Trouble
Three data; value 1 (past data 1), value 2 (past data 2) and value 3 (current data 3); can be made in comparison 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.
NOTE
With DTC not output, if the manifold absolute pressure 2 and ISC valve stepping position are found to
be abnormal than the data saved previously, the possible cause may probably lie in the hardware side
such as ISC valve air inlet hose (#1 cylinder side) crumple, bend, etc.
No DTC output
Abnormal value of ISC valve position
The manifold absolute pressure 2 of the value 3
is lower than the value 1 and value 2.
I940H1110100-01