So here it is, the thread we've all been waiting for. Automatic climate control that works!
Credit is due! So before I go any further, two individuals deserve recognition. I merely took the research they did and applied it.
deltatechx has the first thread with real information that I came across. He did a lot of grunt work with figuring out how the Hybrid control module works and even bypassing some of the Hybrid only functions. This link will take you to his thread: http://www.8thcivic.com/forums/i-c-...al-security-navigation/103900-adding-auto-c-controls-my-lx-diy-coming-soon.html
estyle made a huge discovery. deltatechx had trouble with the A/C engaging. The problem is that the Hybrid evaporator sensor operates at a different resistance than some of the other models. The sensor wouldn't sent a good signal to the module, which in turn threw off correct operation. estyle's research can be found on page 10 of the merged climate control thread: http://www.8thcivic.com/forums/inside-out/10819-automatic-climate-control-threads-merged-10.html
So what's the point of this DIY? It's the collection and organization of research by many. I hope that everyone benefits from this thread by finding the things they need, without having to dig through page after page of guesswork before finding the answers.
I won't cover connectors, depinning, or soldering in this thread. If you're attempting this conversion, you should have at least some experience with this.
My automatic climate control (ACC for short) conversion was done on my 2010 Civic Si sedan. Here's a list of the supplies used:
From what my research shows, any sedan Civic already has the necessary Evaporator Sensor (also called a Thermistor). If you have a coupe, though, you'll need to replace it. P/N: 80560-SNA-A01
If you're using a Hybrid control module you will need a Heater Core Sensor, P/N: 80550-SNC-A41
The arms for for recirculation motor I picked up off of a bad blower motor assembly I bought on eBay. Unfortunately, that's the only way to purchase to arms. I suppose if someone is handy enough, they could make their own. I'll post detailed photos and measurements of them at a later time.
I did some research and here's some compatibility for parts if users want to search for used items. Keep in mind, the parts have to come from a compatible vehicle that was equiped with ACC from the factory.
Some of the sensors were used on other Honda vehicles. If you're buying used parts, you can look for them from these models:
Some models of Civics come with the same Evaporator sensor as the Hybrid (my Si, for example). From what I researched so far, the coupes use a completely different sensor than the sedans. Most sedans seem to use the same sensor as the Hybrid.
So the climate control module. The Hybrid is blue, the base CSX is blue, and the CSX Type S and Civic Type R are red. I suggest purchasing a CSX module that applies to the interior color of your vehicle. The Hybrid module requires extra steps that are avoided with the CSX modules. One important detail: get the wiring pigtails and the connectors. The stock ones will NOT work in the ACC modules.
I attempted to convert the color of my blue Hybrid module to red. In the process, I cracked, shattered, and destroyed the LCD display. To properly tint the LCD, the display needs to be desoldered from the circuit board. It's possible that this can be completed, but I do not know for sure.
Let's start with adding the module in. You'll need to move the wiring pins from the OEM connector to the ACC module connector. I'll make it easy on you all. The first column is from the manual controls, the second column is for the ACC controls. Move the pins from the OEM connector to the new one.
#1 BLK --> #7 BLK
#2 BRN --> #8 BRN
#3 ORN --> #23 ORN
#4 LT GRN --> #22 LT GRN
#5 PUR --> #21 PUR
#6 BLU --> #20 BLU
#7 BLU --> #14 BLU
#8 YEL --> #13 YEL
#9 BLANK
#10 BLANK
#11 BRN --> #6 BRN/BLU
#12 RED --> #17 RED
#13 RED --> #19 RED
#14 WHT --> #10 WHT
#15 GRN --> #12 GRN
#16 ORN --> #15 ORN
#17 PUR --> #16 PUR
#18 GRY --> #27 GRY
#19 LT BLU --> #9 LT BLU
#20 BLANK
#21 BLK --> #5 BLK
#22 BRN --> #2 BRN
#23 LT GRN --> #3 LT GRN
#24 GRY --> #1 GRY
So you've switched those wires over? Good. A major portion is completed.
Now we get into the fun stuff. Since you've already got your dash taken apart, remove the tachometer cluster and set it aside. We need to tap into three wires on the tach connector and run them over to the ACC module, B-CAN and the two wires for the Outside Temperature sensor. The B-CAN is a pink wire at pin number 21. (I'm editing this while at work, so I'll add the details later).
Moving along, the Sunbeam sensor needs to be added. Again, since we've got most of the dash taken apart, remove the portion covering the speedometer cluster. A plug in the dash where the sensor will go needs to be removed, as well as the speedo cluster. Take a long flathead screwdriver, place it in the square hole on the right, behind the speedo cluster, and press up. The plug should pop out (and probably go flying). For the sensor, you'll need a plug with two wires coming off the end of it. Go ahead and hook the connector up to the sensor, and then feed the wires down the hole that the sensor goes in. Do this first, because it is impossible to hook the connector up afterwards. Run the wires out the square hole and then down to the ACC connector.
That's all for one night. I'll be adding the rest over the weekend and the beginning of next week with photos of everything. The following posts will be reserved for wiring diagrams.
Enjoy!
![Image]()
Credit is due! So before I go any further, two individuals deserve recognition. I merely took the research they did and applied it.
deltatechx has the first thread with real information that I came across. He did a lot of grunt work with figuring out how the Hybrid control module works and even bypassing some of the Hybrid only functions. This link will take you to his thread: http://www.8thcivic.com/forums/i-c-...al-security-navigation/103900-adding-auto-c-controls-my-lx-diy-coming-soon.html
estyle made a huge discovery. deltatechx had trouble with the A/C engaging. The problem is that the Hybrid evaporator sensor operates at a different resistance than some of the other models. The sensor wouldn't sent a good signal to the module, which in turn threw off correct operation. estyle's research can be found on page 10 of the merged climate control thread: http://www.8thcivic.com/forums/inside-out/10819-automatic-climate-control-threads-merged-10.html
So what's the point of this DIY? It's the collection and organization of research by many. I hope that everyone benefits from this thread by finding the things they need, without having to dig through page after page of guesswork before finding the answers.
I won't cover connectors, depinning, or soldering in this thread. If you're attempting this conversion, you should have at least some experience with this.
My automatic climate control (ACC for short) conversion was done on my 2010 Civic Si sedan. Here's a list of the supplies used:
- 2007 CSX Type S Control Module with wiring pigtails
- 2010 Civic Hybrid Humidity/Interior Temperature Sensor
P/N: 80590-SNC-A02
- 2010 Civic Hybrid Recirculating Control Motor (with arms)
P/N (motor only): 79350-SNE-A41
- 2010 Civic Hybrid Sunbeam Sensor P/N: 80510-SDA-A41
- 2010 Civic Hybrid Aspirator and Hoses
P/N (aspirator): 80534-S84-A41
P/N (hose A): 80541-SNA-A40
P/N (hose B): 80542-SNA-A40
- Outside Temperature Sensor (not needed on equipped models) P/N: 80525-S30-941
From what my research shows, any sedan Civic already has the necessary Evaporator Sensor (also called a Thermistor). If you have a coupe, though, you'll need to replace it. P/N: 80560-SNA-A01
If you're using a Hybrid control module you will need a Heater Core Sensor, P/N: 80550-SNC-A41
The arms for for recirculation motor I picked up off of a bad blower motor assembly I bought on eBay. Unfortunately, that's the only way to purchase to arms. I suppose if someone is handy enough, they could make their own. I'll post detailed photos and measurements of them at a later time.
I did some research and here's some compatibility for parts if users want to search for used items. Keep in mind, the parts have to come from a compatible vehicle that was equiped with ACC from the factory.
Some of the sensors were used on other Honda vehicles. If you're buying used parts, you can look for them from these models:
- Outside Temperature Sensor: 03-12 Accord, 05-07 Accord Hybrid, 06-12 Civic, 03-12 Civic Hybrid, 06-12 Civic NGV, 05-12 CR-V, 11-12 CR-Z, 11-12 Crosstour, 00-12 Insight, 11-12 Odyssey, 06-12 Ridgeline, 06-09 S2000
- Recirculating Motor: 08-11 CR-V
- Aspirator Hose B: 08-11 CR-V
- Sun Beam Sensor: 03-07 Accord, 05-07 Accord Hybrid, 08-11 CR-V
- Aspirator: 98-12 Accord, 05-07 Accord Hybrid, 08-12 CR-V, 00-12 Odyssey, 06-08 Pilot, 06-12 Ridgeline, 10-12 Crosstour
Some models of Civics come with the same Evaporator sensor as the Hybrid (my Si, for example). From what I researched so far, the coupes use a completely different sensor than the sedans. Most sedans seem to use the same sensor as the Hybrid.
So the climate control module. The Hybrid is blue, the base CSX is blue, and the CSX Type S and Civic Type R are red. I suggest purchasing a CSX module that applies to the interior color of your vehicle. The Hybrid module requires extra steps that are avoided with the CSX modules. One important detail: get the wiring pigtails and the connectors. The stock ones will NOT work in the ACC modules.
I attempted to convert the color of my blue Hybrid module to red. In the process, I cracked, shattered, and destroyed the LCD display. To properly tint the LCD, the display needs to be desoldered from the circuit board. It's possible that this can be completed, but I do not know for sure.
Let's start with adding the module in. You'll need to move the wiring pins from the OEM connector to the ACC module connector. I'll make it easy on you all. The first column is from the manual controls, the second column is for the ACC controls. Move the pins from the OEM connector to the new one.
#1 BLK --> #7 BLK
#2 BRN --> #8 BRN
#3 ORN --> #23 ORN
#4 LT GRN --> #22 LT GRN
#5 PUR --> #21 PUR
#6 BLU --> #20 BLU
#7 BLU --> #14 BLU
#8 YEL --> #13 YEL
#9 BLANK
#10 BLANK
#11 BRN --> #6 BRN/BLU
#12 RED --> #17 RED
#13 RED --> #19 RED
#14 WHT --> #10 WHT
#15 GRN --> #12 GRN
#16 ORN --> #15 ORN
#17 PUR --> #16 PUR
#18 GRY --> #27 GRY
#19 LT BLU --> #9 LT BLU
#20 BLANK
#21 BLK --> #5 BLK
#22 BRN --> #2 BRN
#23 LT GRN --> #3 LT GRN
#24 GRY --> #1 GRY
So you've switched those wires over? Good. A major portion is completed.
Now we get into the fun stuff. Since you've already got your dash taken apart, remove the tachometer cluster and set it aside. We need to tap into three wires on the tach connector and run them over to the ACC module, B-CAN and the two wires for the Outside Temperature sensor. The B-CAN is a pink wire at pin number 21. (I'm editing this while at work, so I'll add the details later).
Moving along, the Sunbeam sensor needs to be added. Again, since we've got most of the dash taken apart, remove the portion covering the speedometer cluster. A plug in the dash where the sensor will go needs to be removed, as well as the speedo cluster. Take a long flathead screwdriver, place it in the square hole on the right, behind the speedo cluster, and press up. The plug should pop out (and probably go flying). For the sensor, you'll need a plug with two wires coming off the end of it. Go ahead and hook the connector up to the sensor, and then feed the wires down the hole that the sensor goes in. Do this first, because it is impossible to hook the connector up afterwards. Run the wires out the square hole and then down to the ACC connector.
That's all for one night. I'll be adding the rest over the weekend and the beginning of next week with photos of everything. The following posts will be reserved for wiring diagrams.
Enjoy!
