JDM Climate Control

[CB aerodeck]

you And Me Both!!!!!

X3

[kidd262]

i succesfully install the digital climate control to my friends car. all main sensor are deleted accept evaporator sensor.

[excalibur02]

If I saw this thread before I would of helped and took pictures of my plugs on my jdm dcc.

Bump for more info lol. Yet another part I've had collecting dust for 4 years.

[xkjnboix]

wow thats nice. alot of work tho haha. personally i prefer slamming it on cold or hot and turning it off whenever. ive always hated the BMW climate control so i know i wouldnt like hondas haha

[92cb7lamboman]

i need a diagram of how you wired that dcc

i succesfully install the digital climate control to my friends car. all main sensor are deleted accept evaporator sensor.

so just need what was needed to successfuly get the dcc to just switch cold to hot and slow and fast blower speed amd to switch the vent doors i dont care if it tell me what temp it is outside cause im in the car not out there i have 8 years of honda and nissan experince and do understand that a dcc needs lots of vaccum or powered motors,sensors to opperate thanks im new on here and would like to get something rare like this on my lamboed h22 cb7 2 door lol

[Chrizzly92]

Mysterious White Connector

I did find something interesting, see photo 6. On the board, there seems to be an auxiliary white connector that leads back to the control panel. It is only covered by a peice of black tap on the outer cover. I have no idea what that thing does, but I am curious.

I know, its an old thread, but informations about the DCC are rare and i thought to add some insight into the "Mysterious Connector".
While inspecting my recently purchased DCC (out of an Ascot iirc), i somewhat reverse engineered the workings of this unit.


First, this switch behind the manual-button-section has 3 positions, while the middle one is the stock one. it changes the resting position for the air mix motor, probably to accomodate different part vendors or vehicles. i though it traced back to the myserious connector but that wasn't correct.
nevertheless, the mysterious connector is connected directly to the CPU of the unit. i probed around a bit and hooked up an oscilloscope. it first looked like some sort of serial input/output port - and it is. there are Ground, DataIn, DataOut and DataClock Pins (G, DI, DC, DO) and therefore it most probably is a SPI bus. changing settings will change the DataOutput and the Interface is "pulsed" every 250ms. moving the switch seems to have no relevant outcome, it does however change the signal levels while the air mix motor moves. maybe the connector was used to program or test the unit while manufacturing, maybe it can be used to read "fault codes" if a diagnostic module is connected, maybe there was an additional vehicle heater available, maybe it could hook up to an air cleaner module - who knows. i may get myself a cheap chinese logic analyzer and try to interpret the SPI Bus going forward, but for now i'm focused on getting this thing put into my accord cb3.

The Connector on the Rear of The Unit and the pigtails are from the TE AMP Series. Those were made for automative ECU-use and therefore are present on OBD0 Honda ECU's - so a pigtail from an old Honda with an OBD0-ECU will do the trick!
for everyone that hasn't a pick&pull yard available or is from a country where those cars are rare to begin with, i researched and found the part numbers for the connector:

TE Connectivity (AMP) 172047-2, 20pin
TE Connectivity (AMP) 172021-2, 16pin
TE Connectivity (AMP) 170291-1, Crimpable Female Pin

Those Plugs are "DLI" which basically means "Double Lock Insert". the inserts seem to be dicontinued, but they arent strictly necessary. its just a second interlock for the pins for automotive use. if you get an ECU Pigtail, they should be present though. As of now (02/2025) the plug housings and pins are available on Mouser or Digikey.

[SSMAccord]

Send this in a DM on here to NH503(? I think that his name on this forum) or Chiznizzle_cb7 on Instagram. He has done a couple of DCC retrofits recently and should know the in’s and out’s, as well as what that switch does.

[Chrizzly92]

dont see the need to do so. i just wanted to clear up the years old question on what the small white connector is used for and which type of connector can be used for a diy-harness.