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I have performed resistance test using an ohm meter on my IACV. It gives value 50.9 k ohm. Is it bad?

Tiny
FAHDASLAM
  • MEMBER
  • 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?
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Friday, May 4th, 2012 AT 5:04 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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
  • 27 POSTS
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
  • MECHANIC
  • 52,797 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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