Cavalier/Z24 V6-191 3.1L VIN T MFI (1994)
Ignition Control Module: Service and Repair
REMOVAL
1.
Disconnect negative battery cable.
2.
Ignition Coils.
3.
Module from assembly plate.
INSTALLATION
1.
Module to assembly plate.
2.
Ignition Coils.
3.
Negative battery cable.
IDLE LEARN PROCEDURE: Any time the battery is disconnected, the programmed position of the IAC valve pintle is lost, and replaced with a
default value. To return the IAC valve pintle to the correct position, perform the following procedure:
1.
After restoring battery power, connect the Tech 1 "SCAN" tool.
2.
Select "IAC SYSTEM," then select "IDLE LEARN" in the "MISC TEST" mode.
3.
Proceed with idle learn as directed.
^
This procedure allows the ECM memory to be updated with the correct IAC valve pintle position, for the vehicle, and provide a stable idle
speed.
