Atlas 4speed install questions
#31
JK Freak
I had the opportunity to test the TC switch values on 2 (4:1) cases this morning. Both of them tested out as follows.
2H = Open
4H = Open
N = Open
4L = 61 Ohm
It looks like the information on Atlas's web site is correct. When the atlas shows up, I'll look into installing a micro switch on the shifters to activate the 66Ohm when I shift into Low.
2H = Open
4H = Open
N = Open
4L = 61 Ohm
It looks like the information on Atlas's web site is correct. When the atlas shows up, I'll look into installing a micro switch on the shifters to activate the 66Ohm when I shift into Low.
#32
JK Newbie
Join Date: Aug 2009
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Seer1
My computer skills are limited, so I do not know how to put here a diagram. Also excuse my english, I live in Monterrey Mexico.
But let me tell you what a I did .
I got the Atlas adapter for my 4SP TC and it did not work, then I installed the sugested 33+33 ohms in the line, and it worked in 4low, but I had a flashing light in my intrument panel, with a DTC .
I took out the sensor (swicht ) from my original TC and I found that there are 4 different resistance values, as you push the sensor simulating 2H, 4H, N, and 4L, in 2H shows 220 ohms, and in 4L shows 62 ohms.
So I simulated this situation with a manual two throw switch, and two resistances one is 33+33 = 66 ohms, and the second I think is 210 instead of 220 ohms.
Then I took the two line that goes from the ECU to the 4sp TC sensor, and from one line I connected in paralell the two resistances, then each one to one of the two inputs of the two throw switch, and from the output of the manual swicht to the other line that goes to the ECU
So now I can select from my manual switch in my dash two positions, one with a resistance equivalent to the 2H (220ohms) and the other to 4L ( 66 ohms), and send this information to the ECU . Nothing to do with the Transfer Case. So when I am in an off road situation I can have the 4L signal to the ECU any time that I want, or 2H without a flashing light .
If you need more information please let me know
My computer skills are limited, so I do not know how to put here a diagram. Also excuse my english, I live in Monterrey Mexico.
But let me tell you what a I did .
I got the Atlas adapter for my 4SP TC and it did not work, then I installed the sugested 33+33 ohms in the line, and it worked in 4low, but I had a flashing light in my intrument panel, with a DTC .
I took out the sensor (swicht ) from my original TC and I found that there are 4 different resistance values, as you push the sensor simulating 2H, 4H, N, and 4L, in 2H shows 220 ohms, and in 4L shows 62 ohms.
So I simulated this situation with a manual two throw switch, and two resistances one is 33+33 = 66 ohms, and the second I think is 210 instead of 220 ohms.
Then I took the two line that goes from the ECU to the 4sp TC sensor, and from one line I connected in paralell the two resistances, then each one to one of the two inputs of the two throw switch, and from the output of the manual swicht to the other line that goes to the ECU
So now I can select from my manual switch in my dash two positions, one with a resistance equivalent to the 2H (220ohms) and the other to 4L ( 66 ohms), and send this information to the ECU . Nothing to do with the Transfer Case. So when I am in an off road situation I can have the 4L signal to the ECU any time that I want, or 2H without a flashing light .
If you need more information please let me know
"Then I took the two line that goes from the ECU to the 4sp TC sensor, and from one line I connected in paralell the two resistances, then each one to one of the two inputs of the two throw switch, and from the output of the manual swicht to the other line that goes to the ECU"
thanks
greg
#33
JK Super Freak
Join Date: Dec 2009
Location: Aurora, Colorado, United States
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I had the opportunity to test the TC switch values on 2 (4:1) cases this morning. Both of them tested out as follows.
2H = Open
4H = Open
N = Open
4L = 61 Ohm
It looks like the information on Atlas's web site is correct. When the atlas shows up, I'll look into installing a micro switch on the shifters to activate the 66Ohm when I shift into Low.
2H = Open
4H = Open
N = Open
4L = 61 Ohm
It looks like the information on Atlas's web site is correct. When the atlas shows up, I'll look into installing a micro switch on the shifters to activate the 66Ohm when I shift into Low.
i'm just giving an idea or suggestion not saying your wrong but sometimes ideas dont hurt.
#34
I have not done this myself and i am not trying to start a debate but i dont think that 4H would be open. the jeep in 4H has the abilit to turn off ESP when you hold the button. This dosnt happen in 2H i would assume that somehow the jeep knows 4H and 2H.
i'm just giving an idea or suggestion not saying your wrong but sometimes ideas dont hurt.
i'm just giving an idea or suggestion not saying your wrong but sometimes ideas dont hurt.
#35
JK Freak
Originally Posted by The_Yeti
I have not done this myself and i am not trying to start a debate but i dont think that 4H would be open. the jeep in 4H has the abilit to turn off ESP when you hold the button. This dosnt happen in 2H i would assume that somehow the jeep knows 4H and 2H.
i'm just giving an idea or suggestion not saying your wrong but sometimes ideas dont hurt.
To accomplish this I removed the wiring harness from the Tcase and ran it to a switch inside of the jeep. in the off position (2H) is 1100 Ohms or resistance. On position is 63 Ohms of resistance. The on position turns traction control off, allows use of lockers, sway bar, and does throttle mapping.
**h**p://www.advanceadapters.com/downloads/300378X.pdf
I used the wiring diagram found here and replaced the shift indicator switch with an on/off switch located inside the jeep.
So the long answer to your question is that I use the switch to send the ECU either 1100 Ohms or 63 Ohms depending on my needs.
Last edited by KenB1010; 10-12-2011 at 07:51 PM.