Originally Posted by MattGATRTJ
Does anyone have any experience with the opposite of this situation. Say I removed the 241 from my Rubicon and installed a 231, now I cannot get the 4wd light to work properly. Using an older switch from a 231 does not work at all on the 06 rubicon. If I put the 241 switch in the 231, then I can get the 4wd switch on in 2wd along with the CEL. The switch button is too long and will not let you shift the t-case. I can fix the shifting problem, but the CEL and getting the switch to function in the opposite position is not possible.
I have not found any info on this.
I know "why would you get rid of a 241?" Cause it goes great with a D30 & D35.
I know this is a old post to reply to, but I came across the answer while trying to figure out what was wrong with my Rubicon's 4wd system. So here goes:
With a Jeep shipped with a 231, the 1s4219 switch wiring directly goes to the 4wd light in a on/off fashion. So it's cosmetic for the most part.
The Rubicons are wired up differently. The 6-position (only 4 positions are monitored) switch on the 241 sends varied voltage to the PCM depending if it's in 2H, 4H, N, or 4L. This is because the PCM only wants the Rubicon to lock it's diffs in 4L while traveling less than 10 miles per hour. So if the PCU gets the 4L signal and the signal from the spedo says it's going less than 10 MPH, then the PCU will allow the lockers to lock.
So putting in a 241 into a non-Rubicon is fairly straightforward--all you need is the 1s4219 switch, assuming you care about the light going on or off.
Putting in a 231 into a jeep with a Rubicon harness is less straightforward--You will need to bypass the PCM so you can lock the diffs (see other posts for that mod) or trick it into thinking it still has a 241 in it.