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Built-in Self Diagnosis ?

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Old 12-19-2014, 02:54 PM
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acw
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Built-in Self Diagnosis ?

Hey Buds,

I was reading on the 6th generation site, that there is a "diagnosis program" that runs on the Radio of the Car.

Do the 5th gen Max. have the same option?
IF so...how do i get there?

Is there anyway to check the A/C system through a plug in diagnosis meter?

Thanks for any help...

~T
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Old 12-19-2014, 04:51 PM
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I don't think so

Check the FSM, there could be another way to test it

http://www.nicoclub.com/archives/nis...e-manuals.html
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Old 12-19-2014, 05:29 PM
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Yeah George...i don't think so either.

Apparently only certain MODELS of Nissan cars had that feature in their RADIO setup.

Nico site has been a waste of time on this issue.

thanks!
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Old 12-20-2014, 01:26 AM
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The auto climate control version of the heater/ac has a self diagnostic for the ac.

What year is your car and does it have to auto climate controls?
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Old 12-20-2014, 04:38 AM
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Originally Posted by DennisMik
The auto climate control version of the heater/ac has a self diagnostic for the ac.

What year is your car and does it have to auto climate controls?
Dennis....i have a 2003 Infiniti I-35. It is basically the same setup as the 03 maxima.

There is an auto climate control button....yes. Is that what you are referring to?
  • How do i get to the DIAGNOSIS mode?
  • The Car has heat, so if i turn the theromstat control to Heat, i get hot air. But it doesn't get cold enough. I suspect a leak somewhere, since i just changed the compressor 2 mths ago.

....Thanks !



.

Last edited by acw; 12-20-2014 at 04:47 AM.
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Old 12-21-2014, 12:58 PM
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Since you have an Infiniti, you don't have manual controls. Infiniti only used the auto climate controls.

To run the self diagnostic, go to page 36 in this link:
http://boredmder.com/FSMs/Infiniti/I35/2003/HA.pdf

Since you changed the compressor, it is possible that you may not have enough R134A refrigerant in the system. If this were to be the case, the self diagnostic cannot detect it. If the refrigerant level gets too low, there is a pressure sensing switch that will keep the compressor from running.

The self diagnostic checks all the duct work and sensors and stuff. There are 4 (?) temperature sensors in the system which could also cause the problem. When you run the diagnostic, make sure you know what the air temperature is around the car so you can compare to the reported sensor readings (part 5).

One of the sections of the self diagnostics (part 3 I think) of the test takes a while to run, so don't start thinking the diagnostic hung up or something.
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Old 12-22-2014, 06:17 AM
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Originally Posted by DennisMik
Since you have an Infiniti, you don't have manual controls. Infiniti only used the auto climate controls.

To run the self diagnostic, go to page 36 in this link:
http://boredmder.com/FSMs/Infiniti/I35/2003/HA.pdf

Since you changed the compressor, it is possible that you may not have enough R134A refrigerant in the system. If this were to be the case, the self diagnostic cannot detect it. If the refrigerant level gets too low, there is a pressure sensing switch that will keep the compressor from running.

The self diagnostic checks all the duct work and sensors and stuff. There are 4 (?) temperature sensors in the system which could also cause the problem. When you run the diagnostic, make sure you know what the air temperature is around the car so you can compare to the reported sensor readings (part 5).

One of the sections of the self diagnostics (part 3 I think) of the test takes a while to run, so don't start thinking the diagnostic hung up or something.
Thanks Dennis...
  • -Compressor is turning, and clutch is turning.
  • -Changed Compressor & Condensor about 2mths ago....was blowing cold when i changed it
  • -I suspect a leak somewhere...(hope it is not the Evaporator)

I will take your advice...and follow those steps...Thank you!

~T

Last edited by acw; 12-22-2014 at 06:55 AM.
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Old 12-22-2014, 06:56 AM
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OK the Sensor test came back good.

Suspect a leak somewhere....
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