How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Jake Your Own Question
Jake
Jake, Nissan Technician
Category: Nissan
Satisfied Customers: 3651
Experience:  Experienced collision repair technician, Pulaski Tech graduate and DSM hobbyist.
20440119
Type Your Nissan Question Here...
Jake is online now
A new question is answered every 9 seconds

Ac compessor d changed but but it is still not coming on.

Customer Question

Ac compessor d changed but but it is still not coming on. What could be the problem
JA: Have you checked the Freon level?
Customer: Yes
JA: What is the model/year of your Nissan?
Customer: Compressor not turning at all
JA: What year is your Nissan?
Customer: 2011
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: I've changed the compressor and now I'm looking for the relay
JA: Anything else you want the mechanic to know before I connect you?
Customer: No
Submitted: 2 months ago.
Category: Nissan
Expert:  Jake replied 2 months ago.

The relay is in the IPDM. Perform the auto-active test I am sending to verify the relay and teh rest of the circuit is in tact.

Customer: replied 2 months ago.
It appears that the switch inside isn't connecting to activate the compressor
Customer: replied 2 months ago.
Are you there
Expert:  Jake replied 2 months ago.

sorry helping multiple people at once.

Expert:  Jake replied 2 months ago.

so the auto active test RAN, but the compressor never clicked loudly?

Customer: replied 2 months ago.
Ok the relay is fine. The switch isn't working.
Expert:  Jake replied 2 months ago.

i need you to answer my questions directly if you can, i am getting confused

Expert:  Jake replied 2 months ago.

I need to know if the auto active test ran the cycle or not

if it did, did the compressor clutch click when the cycle ran?

Customer: replied 2 months ago.
Ok the person working on my car did not ruin the auto test. He just went to the short cut to see if the compressor would work. Now, can you answer me directly..... It's the auto test like a reset
Expert:  Jake replied 2 months ago.

no

Expert:  Jake replied 2 months ago.

the relays INSIDE the IPDM are not serviceable, so you cannot test them individually without back probing and jumping pins

Expert:  Jake replied 2 months ago.

The auto active test is a simple test that will flash the headlights, do wipers, cooling fans, and compressor clutch to VERIFY the circuits are working and teh fuses are in tact.

Expert:  Jake replied 2 months ago.

If the test runs then you know the relay works, the wiring is all in tact, and the fuse is good. without a single test with a meter. Can't get any better than that

Expert:  Jake replied 2 months ago.

Once you know the circuit works and is in tact then you can check to see WHY it's not activating when the a/c is switch on. is it the freon levels or pressure or what?

we can find the culprit pretty easy this way.

Customer: replied 2 months ago.
Ok got it... Now.... He did a direct connect from wires going to compressor to my Battery and now my car is cooling. Without that the very new compressor won't come on
Expert:  Jake replied 2 months ago.

That only tells us that the compressor clutch is goo when it has power. we are trying to figure out WHY it's not getting power. So doing the auto active test will rule out a problem in the circuit. so we can move forward.

Related Nissan Questions