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10
AN650A/K7 ('07-MODEL)
Example of trouble
Three data; value 1 (current data 1), value 2 (past data 2) and value 3 (past data 3); 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 pass of time and identify what problem is currently occurring.
With DTC not output, if the value of engine coolant temperature is found to be lower than the data saved
previously, the possible cause may probably lie in a sensor circuit open or ground circuit opened or influence
of internal resistance value changes, etc.
Unstable idling speed (Too high)
Abnormal curve of graph
Abnormal value of engine coolant temperature
No DTC output
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