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Automatic Temperature control is not working

Tiny
BOB B
  • MEMBER
  • 1994 CHRYSLER CONCORDE
  • 3.3L
  • V6
  • FWD
  • AUTOMATIC
  • 130,000 MILES
Automatic temperature control does not work. Fuse and relay is good, put in new thermostat.
Monday, January 2nd, 2017 AT 10:24 AM

17 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
This will need to be scanned for codes to see what Is wrong with it. Check fuses in picture.
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Monday, January 2nd, 2017 AT 12:03 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,912 POSTS
FROM BOB B

I looked at the fuses they all look good if it is the control head how
would I check it?
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Wednesday, January 4th, 2017 AT 9:28 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,912 POSTS
Hey Bob,

You must check the power and ground input and outputs of the system, here is a complete wiring diagram that will show you how to test the controller and the wiring.

Here is a guide and diagram.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please run some tests and get back to us so we can continue helping you.

Best, Ken
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Wednesday, January 4th, 2017 AT 9:35 AM
Tiny
BOB B
  • MEMBER
  • 11 POSTS
I put a new automatic temperature control head in now it lights up ran a diagnostic test and no codes came up but still no heat
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Friday, January 6th, 2017 AT 11:23 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check to see if blend door is getting power but it may be a sensor that is screwing up that is why you need to get it scanned for codes.
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Friday, January 6th, 2017 AT 12:01 PM
Tiny
BOB B
  • MEMBER
  • 11 POSTS
How do I change the blend door unit
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Monday, January 9th, 2017 AT 10:34 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Sorry I gave you the wrong instructions for resetting actuator see pic also covers getting codes if not the actuators
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Monday, January 9th, 2017 AT 12:04 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
For somereason I can't add images to say what to do
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Monday, January 9th, 2017 AT 12:06 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Ok now have pics
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Monday, January 9th, 2017 AT 12:13 PM
Tiny
BOB B
  • MEMBER
  • 11 POSTS
Can you show me what a in car ambient temperature sensor looks like please which is behind the right bezel thank you.
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Monday, January 9th, 2017 AT 2:53 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
See pic it's a two wire connector
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Monday, January 9th, 2017 AT 3:30 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,912 POSTS
Hey Bob,

I found these images for you to show you where the blend door actuators are.

Please let us know happens so it will help others.

Best, Ken
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Monday, January 9th, 2017 AT 3:53 PM
Tiny
BOB B
  • MEMBER
  • 11 POSTS
As soon as I put in the sensor ill let you now if every thing works thank you for your help
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Monday, January 9th, 2017 AT 4:32 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,912 POSTS
Sounds good, please let us know.

Best, Ken
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Tuesday, January 10th, 2017 AT 11:07 AM
Tiny
BOB B
  • MEMBER
  • 11 POSTS
Do you know where I can find a in-car temp sensor
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Saturday, January 14th, 2017 AT 3:03 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,912 POSTS
IN-VEHICLE TEMPERATURE SENSOR

Removal & Installation

Remove right side instrument panel trim end cap and trim bezel from instrument panel. Remove sensor screws, pull out sensor, and disconnect wiring. To install, reverse removal procedure.
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Saturday, January 14th, 2017 AT 9:38 PM
Tiny
BOB B
  • MEMBER
  • 11 POSTS
Do you know where I can find a in vehicle temp sensor can't seem to find one?
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Wednesday, January 18th, 2017 AT 10:22 AM

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