I HAVE PERFORMED RESISTANCE TEST USING AN OHM METER ON MY IACV. IT GIVES VALUE 50.9 K OHM. IS IT BAD?

  • Tiny
  • fahdaslam
  • 2007 Toyota Corolla
  • 4 CYL
  • FWD
  • manual
  • 77,000 miles

I have cleaned throttle body many times with IACV, but still RPM drops when clutch is pressed. Nw finally I read an article in which resisitance check diagnostic was displayed. M hvng thz value kindly tell me is it normal for my IACV. And also tell me hw to check wiring of ECM to IACV?

Friday, May 4th, 2012 AT 5:04 PM

3 Answers

  • Tiny
  • rasmataz
  • Member

Go to this walk thru link: How do you test the idle air control valve

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Friday, May 4th, 2012 AT 10:24 PM
  • Tiny
  • fahdaslam
  • Member

Dear tell me about this resistance reading of 50.9 kilo ohm. Is IACV bad or not?Thanx

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Sunday, May 6th, 2012 AT 1:26 PM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,502 posts

It is not as simple as that. The fact that it is not 0 ohms or infinity makes it ok as you are measuring the resistence of the windings in the motor. It is the controls that need checking from the ecm. You need a scan tool to manipulate the motor to work from full open to full closed.

As I said, it is not that simple and requires a scan tool for further checks.

Roy

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Sunday, May 6th, 2012 AT 2:49 PM

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