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IAC Valve function & testing. 900

posted by  Steve on  Mon Apr 11 05:52 CST 2005
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last visit: Fri Oct 24 07:16 CST 2014
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The TPS is a dual pole switch: continuity at both extremes, nothing in the middle. It signals both "idle" (for IAC operation) and "WOT". In between, the absence of continuity tells the ECU to shut down the IAC. You can easily test it with a multimeter set on "continuity": the middle connector is ground.

Your IAC is spring loaded and should return to zero when you rotate the inner valve. It is a stepper motor.






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New IAC Valve function & testing. [900]
posted by  someone claiming to be Happy  on Mon Apr 11 05:27 CST 2005 >


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