MEFI 3 IAC Troubleshoot
10-03-2020, 05:44 PM
#1
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MEFI 3 IAC Troubleshoot
Does anybody have a trouble-shooting diagram for diagnosing a non functioning IAC motor ? System is MEFI 3 , on a 565ci with Whipple 3.3 . I have scan tool , no code . No movment when command by scan tool . trio of fuses OK . Tried different IAC IAC motor is typical GM 4 pin
10-04-2020, 09:39 AM
#2
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heres a pin out of the ecu,,my guess,driver circuit has been damaged in the ecu.but,hoping its a broken wire
