HVAC blows heat no A/C?

Tiny
MOTORCITYKID
  • MEMBER
  • 2014 CHRYSLER TOWN AND COUNTRY
  • 3.6L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 135,000 MILES
I have been troubleshooting this issue for quite some time now. The compressor clutch doesn't make the normal click sound when turned on or off, when the temperature control at the unit is turned down it does get less hot but no A/C. I have looked for a fuse or relay but can't find one specific to the compressor clutch. The coolant is full; my service manual is not good.
Monday, June 23rd, 2025 AT 7:50 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Hi,

The A/C compressor on this vehicle receives power from the totally integrated power module (TIPM). I attached a pic below of the schematic and highlighted the related wiring.

One of two things is likely happening. First, it could simply be low on freon. Have you tried recharging it or adding freon? If not, that is where I would start. Here is a link that explains how to do it. You can get the freon at any parts store.

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon

If that doesn't resolve the issue, you will need to locate the dark blue wire with a yellow tracer and carefully test it for power when the A/C is on, and the engine is running. Please be careful because you will be very near the serpentine belt.

If there is no power and the system if properly charged, the next concern is the TIPM. If you noticed in the schematic, power is from a printed circuit board, which is likely non-repairable and will need to be replaced. However, before doing that, I would recommend confirming there isn't an issue at the controller in the vehicle. A scan tool should be able to retrieve codes that would help identify a possible issue. In this case, you would need to scan the CAN bus.

Here is a link that explains the procedure:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Try this and let me know the results or if you have other questions.

Take care,

joe

See pic below.
Was this
answer
helpful?
Yes
No
Monday, June 23rd, 2025 AT 8:46 PM

Please login or register to post a reply.

Related Air Conditioner Not Working Content