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5th Generation Maxima (2000-2003) Learn more about the 5th Generation Maxima, including the VQ30DE-K and VQ35DE engines.

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Old 11-05-2012, 11:03 AM   #1

 
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IAC Testing

Can anyone tell me how to test to see if the IAC is shorted? I have mine off now and I see that it has 6 connectors. Just wondering which prongs to test across and what I should be seeing for a good IAC. Thanks.
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Old 11-05-2012, 09:23 PM   #2
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The connector has 2 rows of pins, 3 pins in a row. On each row, take the resistance reading from the center pin (common) to each end pin. That's a total of 4 resistance readings between both rows. Each reading should be 22 ohms at 68 degrees F.

Sounds like you don't have a FSM. You can downlod one from here:
http://boredmder.com/FSMs/Nissan/Maxima/

The testing I am talking about is at the bottom of page 512, section EC in the 2000 FSM or page 506, section EC in the 2000.5 FSM. The schematic is 4 pages earlier.

Why 2 versions of the FSM? Because Nissan made a bunch of changes to the 2000 year model during its production run. It would be in your best interest to get the correct FSM for your car. A lot of the changes seem to be in the electrical area. The VIN number is used to determine which version of the FSM that you need for your car.

Look at the last 8 digits of your vin number.
for VINs up to and including YT0 12236 -or- YT2 11680 -or- YT5 27429 -or- YT7 40491
download the 2000 manual (early production)
on the front page of the FWD section, it reads
Edition: April 1999
Revision: June 2000
Publication No. SM0E-1A33U3

If your VIN number is higher than the above,
download the 2000.5 manual (later production)
on the front page of the FWD section, it reads
Edition: November 1999
Revision: January 2001
Publication No. SM0E-1A33U5
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Old 11-05-2012, 09:26 PM   #3
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Wholly wealth of info Batman!
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Old 11-05-2012, 09:55 PM   #4

 
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iac testing

Ok. So I have my meter set at 200 Ohms, cause thats as low as it goes. With the spring facing me i tested 1 2 3
4 5 6
From 1-2 I got 1.4 From 3-2 I got 1.1 From 4-5 I got 4.5 From 6-5 I got 7.6
Bad IAC?
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Old 11-05-2012, 10:26 PM   #5
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Yes, replace that IACV. Do not risk damaging the ECU by running the engine with that IACV.

If you have the time, read this lonngggg thread about burning up the ECU.

New ecu, fried in seconds....
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Old 11-05-2012, 10:29 PM   #6
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Quote:
Originally Posted by TunerMaxima3000 View Post
Wholly wealth of info Batman!
Thanks, but it's nothing compared to some of the things you've done.
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Old 11-05-2012, 10:29 PM
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