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MEFI 3 IAC Troubleshoot

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10-03-2020 | 05:44 PM

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HALLETT FAN

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From: Newbury Park Ca

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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

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Old

10-04-2020 | 09:39 AM

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sutphen 30

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From: taxachusetts

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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

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Old

10-06-2020 | 02:20 PM

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HALLETT FAN

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From: Newbury Park Ca

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Thanks , that'll get me started !

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