Altronic VariSpark CPU-XL, Operating Instructions Manual, Page: 44 / 97

CPU-XL VariSpark IOM 07-21
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44
28.0 THRESHOLD ADJUSTMENT SCREENS
28.1 Threshold adjustment screens enable the operator to calibrate thresholds
used to diagnose potential ignition problems and control ignition energy based
on the spark reference numbers. All of the threshold screens have the same
button functions as described with the first threshold screen. All thresholds are
accessed under the F2 key.
FROM PRESS TO
VIEW FIRST
THRESHOLD
SCREEN
28.2 If the CAVG reference number of a cylinder is below the LO SPARK VOLTAGE
threshold, a diagnostic warning for that cylinder will occur. This test will
identify a low voltage demand condition which may result from a shorted coil,
secondary lead or spark plug. To disable diagnostic, set value to zero.
PRESS TO VIEW PRESS
TO VIEW GRAPH OF TO ADJUST
NEXT CURRENT SPARK
CYLINDER
F2
CYLINDER
NEXT
OFFSET
PRESS TO PRESS TO
INCREASE DECREASE
THRESHOLD THRESHOLD
28.3 If the CAVG reference number of a cylinder is above the HI SPARK VOLTAGE
threshold, a diagnostic warning for that cylinder will occur. This test will identify
a high voltage demand condition which may result, for example, from worn
spark plugs or poor air-fuel ratio control. To disable, set to 255.
NOTE: Improper use of this feature
may limit the effectiveness of the
diagnostic system and result in spark
reference numbers that mask real or
create false problems.
F2
ESC
⬆
⬇