Pcm Code E030, ISC Rpm Out Of Range: Action

PCM turns on SERVICE ENGINE SOON light and keeps it on for entire ignition cycle.

NOTE: Test numbers refer to numbers on diagnostic chart.

This step checks for proper throttle switch, power steering switch and P/N switch operation. PCM must receive accurate switch status information to control idle.
This step checks for proper ISC motor operation.
Many engine fuel and emissions system faults may cause unstable idle. If base engine idle is not steady, ISC may not be able to control idle to within 152 RPM of desired idle. For symptom diagnosis, see TESTS W/O CODES article in this Section.