How do you test an IAC?

Tiny
MAILITTOMENOW
  • MEMBER
  • 1995 MAZDA B2300
  • 45,000 MILES
I would like to verify how an iac works. When applying battery voltage from the connector I believe the motor should either open or close the port by spinning. Also if you disconnect the connector while the engine is running the idle should drop, but it doesn't.

Is that the correct way to see if an iac is functioning?

I have already gone through 4 brand new iacs and none of them seem to function correctly. There is battery voltage at the connector when turning the key on. Thanks.
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Wednesday, October 5th, 2011 AT 6:20 PM

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Tiny
DOCFIXIT
  • EXPERT
Need to have scanner to check IAC PID Values
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Wednesday, October 5th, 2011 AT 6:38 PM

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