How-To: Super Fantastic JDM HVAC Swap
1 Attachment(s)
EVOLUTION AUTOMATIC CLIMATE CONTROL SWAP
AKA "THE BITCHIN' JDM SWAP" Attachment 327124 Table of Contents Overview The objective of this entire procedure is to get rid of the not only ugly, but also extremely dated climate control setup that was lovingly installed by Mitsubishi in all USDM Evolutions. This also allows for the easy relocation of climate controls to the lower cubby area and the installation of a storage pocket and a single-DIN radio or a double-DIN radio in the upper area. Because the servo motors that control the air box are all inter-connected and adjust themselves using various sensors of different types, this is not a straight-forward swap like many people think it is. I will make it as simple as possible but you need to be comfortable with wiring to get this project done efficiently. The JDM system consists of an A/C ECU which is the brain of the unit. Connected to it are three servo motors; one for the Air Mix portion of the heater box (this controls how warm the air flowing through the car is), the second is for the Mode portion of the heater box (this controls where the air is flowing to such as hands, face, or defrost), the final is for controlling the recirculation portion (whether the air coming into the heater box is from inside or outside the car). There are also sensors connected to the A/C ECU as well; one for monitoring the temperature of the air coming into the heater box, one for monitoring the temperature of the water in the heater core, one for monitoring the temperature of the air outside the car, one for monitoring the temperature of the air inside the car, and one for monitoring the amount of sunlight the car is experiencing. By combining inputs from these five sensors the A/C ECU is able to, if selected, automatically control the temperature inside the car and regulate it to the best of its ability. I am doing this swap not for the automatic abilities of the unit, but because it looks much better and is more modern. Some people think the Evolution is a race car and doesn't deserve creature comforts, I personally think Mitsubishi are idiots for not including cruise control on a car built in the 21st Century. This isn't for the faint of hearted. If you don't know your way around wiring and reading wiring diagrams (this not so much as I've written everything out), then do some research. I can't hold your hand through this process any more than answering questions that might arise. Tips, Tricks, and Useful Information Connectors The connectors listed below are the most important connectors in this setup. These are going to be the ones I will refer to many times by connector number as opposed to "the 20-pin connector for the A/C ECU" as that would get extremely confusing.
This is a hard process to describe. If you're unsure at all, In our case, the only connectors we will be de-pinning are C-17, C-18, and C-18 "OLD". All other connectors used will be used as pigtails and we will be snipping and soldering associated wires that are used with them To de-pin C-17, C-18, and C-18 "OLD" you will need to slide the white inner shell "up". If you look closely at the back of the connector (where the wires protrude from) you will see tiny teeth that interlock between the white inner casing and the black outer casing. You will need to separate the outer casing far enough from the inner casing to unlock these teeth and slide the white inner casing toward the top of the connector. I did this by inserting my push-pins into the top-most teeth on the white casing, one on each side, and that was enough. De-pinning Connectors Example 1 De-pinning Connectors Example 2 To remove the terminals from the connector, you'll need to lift the securing tooth on the top side of the pin and slide the pin out. This is difficult without knowing how to do it. What I did was slide the push-pin along the top of the connector until you feel it make contact (with the securing tooth), then push down on the push-pin to lift the pin inside the connector (like a lever) while simulatenously gently pulling on the associated wire. Pull too hard and the pin will have enough friction to not allow you to lift the securing tooth out of the way. Tools Needed
These are optional in the sense that they allow easy removal of the heater wiring harness from the car if need be
Parts Needed The Mode Motor, Air/Mix Motor, and Heater Blower Motor need to be from a Left-Hand Drive car! These specific parts sourced from a Right-Hand Drive car will not work! All control motors and sensors that are not currently existing in the car will also need their associated connectors. Please take note of this when sourcing parts!
Notes:
Wiring Diagram for JDM Automatic Climate Control JDM Wiring on Dropbox Page 3-96 Page 3-97 Page 3-98 Page 3-99 Page 3-100 Page 3-101 Page 3-102 Wiring Diagram for USDM Manual Climate Control USDM Wiring on Dropbox Page 90-86 Page 90-87 Page 90-88 Page 90-89 Page 90-90 Wiring Preparation Work Connector De-Pinning Depin the following pins:
Wire Runs You'll Need to Create
Modified Wiring Harness Diagram A/C ECU Harness Diagram I'll make this up later C-17 Connector
C-18 Connector
NOTES: THESE ARE IMPORTANT Connectors that ground to C-17 (20):
|
Nobody has done this yet? No photos available of install?
|
1 Attachment(s)
What do you want photos of?
There isn't a lot to take pictures of during the process, here's the ones I tried to take while I did it: http://imgur.com/a/57XJc End result: Attachment 326931 |
That looks great. I've been wanting this forever. Where did you source the parts from if I may ask?
|
this is great, congrats on reaching the finish line!
|
Originally Posted by 4whlbst
(Post 11593740)
That looks great. I've been wanting this forever. Where did you source the parts from if I may ask?
|
very nice! I'm not an electrical guy at all but very cool. did my hvac the old fashioned way :)
|
Electrical works wasn't all that bad at all. Few soldered joints when making the sub-harness on the air control motors, run a few other wires, but no custom work by any means. about as difficult as installing gauges and running power and wires for them all. obviously much more involved than that because you have to de-pin connectors, but i did the whole install in a day once i had all the stuff. sourcing everything was 50% of the work, writing up all my wiring diagrams and making sure they were right was 40%, installing it was 10%
|
Does the auto climate control function work?
|
Yup, whole thing works
|
-I m confused on what is needed thats from a JDM or UKDM evo? the box under parts needed looks like I have to source them off a left hand drive car. so like the servos are from an outlander. I m guessing i need the A/C ECU. i can reuse the usdm blower motor. do i need the hvac unit too?
-I do have an issue with the hot/cold on the manual controls not working with the updated gears and cable and the last fix is the blend door in the box according to the TSB from mitsu. is the servo motors going be able to move that door or i need to fix that first then do the conversion? |
Originally Posted by Huy's Evo
(Post 11600134)
-I m confused on what is needed thats from a JDM or UKDM evo? the box under parts needed looks like I have to source them off a left hand drive car. so like the servos are from an outlander. I m guessing i need the A/C ECU. i can reuse the usdm blower motor. do i need the hvac unit too?
Originally Posted by Huy's Evo
(Post 11600134)
-I do have an issue with the hot/cold on the manual controls not working with the updated gears and cable and the last fix is the blend door in the box according to the TSB from mitsu. is the servo motors going be able to move that door or i need to fix that first then do the conversion?
|
so get everything in that on that parts list. use the HVAC housing. it should have provisions to screw in the servos. modify the blower motor housing to fit the galant blower moter. is all galant blower motors have the 4 pin connector? and the 92mm rod. is there a part number for that?
|
correct; stock hvac housing has all the provisions for the servo motors
blower motor will need some modification, i forgot about this and have added pictures. i dont know if all galant blower motors will work, you'll need to check if the part is compatible The rod I can't find. It's supposed to be a part of the servo motors as far as i can tell but anyone who is pulling the servo motors off of wrecked cars doesn't include it |
MR568601 is this the heater harness for the servos and blower motors that connect to the A/C Ecu? Right now i m trying to source out the A/C ECU. and my blend door is binding so i m trying to do it all in one shot since the dash is coming out.
|
All times are GMT -7. The time now is 08:43 PM. |
© 2024 MH Sub I, LLC dba Internet Brands