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How to Add Automatic Temperature Control (ATC) to a Manual Temperature Control Truck


This is a discussion on How to Add Automatic Temperature Control (ATC) to a Manual Temperature Control Truck within the 4th Gen DIY forums, part of the 4th Gen : 2009 - Present category!
MPGrimm and I have been working on figuring out how to convert our trucks from manual temperature control to automatic ...


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Old 05-16-2017, 11:08 PM   #1 (permalink)
 
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Default How to Add Automatic Temperature Control (ATC) to a Manual Temperature Control Truck
MPGrimm and I have been working on figuring out how to convert our trucks from manual temperature control to automatic temperature control. We have made enough progress to prove that it can be done and want to share what we have learned with everyone.

This is a pretty easy and inexpensive mod in terms of parts. You basically need to buy a cabin temperature sensor, a connector, and some terminals and put it all together using an existing 8.4 conversion harness. The trouble with this mod, is that the feature has to be activated in the BCM. I used my AutoEngenuity tool to activate the feature, but unlike activating some other features where it was a smooth process, this caused corruption of my trucks “vehicle brand” which caused the 8.4 Radio to loose it logo and themes. I have not found a way to correctly reset the brand. If you have the AE tool, and want to try this mod, please be aware of this issue. I have not encountered any other problems with the truck due to this issue, but proceed at your own risk.


Anyways onto the mod:


Parts Needed:

(1) 55111178AC – CABIN AIR TEMPERATURE SENSOR
(1) 1-929170-4 – 4 WAY Connector Shell for Temperature Sensor
(4) 963715-1 – Female Terminals for 1-929170-4 (Temperature Sensor Connector)
(2) 1123343-1 – Female Terminals for 1318917 (HVAC Module Connector


Conversion Harness Modification

You will need to pin two new wires into pins 11 and 12 of the HVAC module side conector of the conversion harness. These wires will run from the HVAC module to behind the drivers side kick panel where the Cabing Air Temperature Sensor will be located (more on that below). I made my wires 80" in length. You will also need to splice wire # 2 for fused ignition power and wire #14 for ground. These will run to a new connector for the temperature sensor (1-929170-4). The following schematic shows how to wire it up.



Here's what my conversion harness looked ike after adding the temperature sensor wiring. Notice the new leg off of the harness. It is shown with the sensor attached.

IMG_0812 by Deere Guy, on Flickr


Installing the Temperature Sensor

The temperature sensor is located behind the driver side knee kick panel. You will need to remove the panel and install the sensor.

1. Remove the two screws at the bottom of the panel and then pull the panel off.
IMG_0809 by Deere Guy, on Flickr

2. Install the sensor.
IMG_0811 by Deere Guy, on Flickr

3. Route the new leg of the conversion harness over to the sensor and plug it in.


4. Reinstall the knee kick panel.


Activating with AutoEngenuity

Note: Do this at your own risk. I am not responsible for anything that may happen to your truck as a result from performing this modification.

1. Connect the AE tool to the truck.
2. After selecting the truck, connect to the Body Control Module.
3. Select the "Test Onboard Systems" tab
4. Select Module Configuration from the drop down.
5 . Select "Initiate"
6. Accept the warning message.
7. Using the arrows on each side of the done button, scroll down to "vehicle config 3".
8. Press Done.
9. Using the arrow buttons select" HVAC Config" press Done.
10. Using the arrow buttons select "Dual Zone ATC" and select Done.
11. Wait for the write to complete.
12. Reboot the radio by pressing both knobs simultaneously for a few seconds.
13. Repeat the above process but this time select "Single Zone ATC"
14. Reboot the radio again.


As you can see in the picture below, I have mine set for a single zone automatic temperature control. I am using a standard MTC bezel, and just using the "Auto" button on the radio to switch it into Automatic mode.

IMG_0813 by Deere Guy, on Flickr
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Last edited by DeereGuy; 07-18-2017 at 09:38 PM.
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Old 05-17-2017, 12:33 AM   #2 (permalink)
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OMG I'm so excited I peed a little.


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Old 05-17-2017, 02:09 AM   #3 (permalink)
 
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Glad we could finally put this out there.

More coming soon!

Mē Mods - From my non Flammable S7!
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Last edited by Mpgrimm2; 05-17-2017 at 02:13 AM.
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Old 05-17-2017, 05:43 AM   #4 (permalink)
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Nice job!
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Old 05-17-2017, 06:03 AM   #5 (permalink)
 
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Would you mind adding the exact steps/place to modify the BCM with the AE tool?

Also, have you guys looked into a fully functional dual zone ATC or is that part of the "more to come"?

Great work by the way!


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Old 05-17-2017, 06:07 AM   #6 (permalink)
 
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This is really cool guys !

Congrats to M2Mods!

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Old 05-17-2017, 07:45 AM   #7 (permalink)
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Good job guys. We had this running a couple months ago . OOR/T got creative and combined the two bezels so he has the auto button with one set of temp controls.


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Old 05-17-2017, 10:24 AM   #8 (permalink)
 
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Originally Posted by jcarden10 View Post
Would you mind adding the exact steps/place to modify the BCM with the AE tool?

Also, have you guys looked into a fully functional dual zone ATC or is that part of the "more to come"?

Great work by the way!
True dual zone won't be possible without removing the dash and replacing the entire HVAC plenum box box behind the dash, then it would just be one more connector to run the extra blend door.

Originally Posted by CuylerTech View Post
Good job guys. We had this running a couple months ago . OOR/T got creative and combined the two bezels so he has the auto button with one set of temp controls.
I was think about grabbing an extra dual zone bezel if i can nab one for cheap to try and combine parts between them.
Guess I will pm R/T to see what he did vs starting blind since we were apparently thinking the same thing. I would love to see the look on the dealer tech's face during my next oil change if they saw a single zone ATC bezel. "sha wing!"

Mē Mods - From my non Flammable S7!
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Last edited by Mpgrimm2; 05-17-2017 at 12:03 PM.
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Old 05-17-2017, 10:34 AM   #9 (permalink)
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Great work guys!!!!
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Old 05-17-2017, 08:53 PM   #10 (permalink)
 
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Default How to Add Automatic Temperature Control (ATC) to a Manual Temperature Control Truck
Originally Posted by jcarden10 View Post
Would you mind adding the exact steps/place to modify the BCM with the AE tool?



Also, have you guys looked into a fully functional dual zone ATC or is that part of the "more to come"?



Great work by the way!





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I updated the original post with the AE steps.
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Last edited by DeereGuy; 05-17-2017 at 08:58 PM.
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