WK NV245 Manual Controller
I am working a project on my 2005 Jeep Grand Cherokee with QuadraTrac 2. First a little background on the project, then a couple of questions. Background is a little long, so bear with me:
A few months ago, the FDCM started acting up, causing the transfer case to default into the 4WD LOCK position. After various trips to the dealer, and reflashing under the most recent FDCM recall, I decided to just "Bypass" the FDCM and make a manual transfer case controller for off road use. While on the road, the controller will be powered off, locking the transfer case in its last selected state.
For off road use, I am setting up 3 inputs for the controller that will be mounted in the storage area between the 12V power outlet. One input will be a two position switch (Enabled/Disabled), the second a two position switch (4Hi/4LO), and the third a potentiometer (TCase Lock %)
The second two inputs are used to control an Arduino, which takes additional inputs from the Transfer Case Motor mode sensor and T-Handle Shifter. The Arduino drives 4 Relays are used to control the Transfer Case Motor motion and braking. Basic operation will be: Select 4HI or 4L0, select transfer case lock percentage, then lift the T-Case handle to execute the shift.
At this point in the game, I have done a little bench testing, and went ahead and wired the Arduino into the jeep with the applicable inputs and outputs. I now have a fair amount of sotware development to do to get everything functioning how I want.
Finally, my questions..
1) One other feature I would like to incorporate is an input the Arduino from the "Neutral Safety Switch" or whatever the equivalent is these days. Does anyone have any info on where I could grab the signal that the shifter lever is in the "Neutral" position?
2) Obviously since I have pretty much trashed the FDCM, the "Service 4wd" light is on constantly. Does anyone know if there is some way to trick the system to shut this message off?
I know I have seen a few threads of people doing similar setups, so I'll post some pics as I get further.
Thanks in advance