Does anyone know how I can get my hands on a rubicon 4wd wiring diagram? I'm trying to determine which color wires are signal and which is the shared ground. Specifically DB/YL and Y/LG?
sierradmax
Y/LG is the Sensor signal and connects to pin 3 on tipm (connector one)
DB/Y is the sensor ground and connects to pin 28 on tipm (connector one)
DB/Y is the sensor ground and connects to pin 28 on tipm (connector one)
It may be called a switch but it is not a switch it is a linear potentiometer thus the resistance between the two wires varies with plunger depth
Thus it really does not matter which wires goes to which as pcm is just looking at resistance across the two wires
It is a pricy part but fortunately Also used in Jeep Liberty transfer cases which are plentiful at junk yards
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Thus it really does not matter which wires goes to which as pcm is just looking at resistance across the two wires
It is a pricy part but fortunately Also used in Jeep Liberty transfer cases which are plentiful at junk yards
Sent from my iPhone using Tapatalk
Yeah, I know about the whole resistance thing... I'm actually cross referencing the colors to a "Atlas JK module" install in a TJ Rubicon. The signal & ground wiring are different yet Atlas specify's to connect their colors to a JK Rubicon application.
If the atlas has a switch for low vs high and 2 vs 4 wd could use those switches to control relays that in turn close and open contacts used with regular resistors to send proper resistance to tj pcm to keep it aware of transfer case position so proper dash lights and locker pump control works as it did oem
The XJ 242 had a real slick plunger operated switch with multiple contacts for common, w4d, part time, and low so just the switch could control the dash indicator lights
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The XJ 242 had a real slick plunger operated switch with multiple contacts for common, w4d, part time, and low so just the switch could control the dash indicator lights
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Digger84. I'm finding out so much similarity between the TJ & JK Rubicon 4wd system. Advance adapters knows the mechanics behind it and has derived to 3 resistance levels signalling the PCM which mode the T-case is in.
1100 ohms: 2wd High
670 : 4wd High
67: 4wd Low.
The switches used from advance adapters are an on/off plunger switch similar to the non-rubicon models (both TJ & JK). The supplied module, in conjunction with the switches, provides the pcm with the proper resistance with a little bit of trickery.
I agree that relays, wiring, dual switches and some resistors could work.
1100 ohms: 2wd High
670 : 4wd High
67: 4wd Low.
The switches used from advance adapters are an on/off plunger switch similar to the non-rubicon models (both TJ & JK). The supplied module, in conjunction with the switches, provides the pcm with the proper resistance with a little bit of trickery.
I agree that relays, wiring, dual switches and some resistors could work.
The non can bus no TIPM TJ is electrically simpler in almost every respect
As I recall the TJ FSM listed the proper resistance for various plunger depths
Would also be easy to unplug the harness connector and measure resistance across 2 wires for each transfer case shift position
On the rubicon TJ the two wires from the sensor go straight to the pcm and then pcm interpretes the resistance to and sends PCI bus encoded digital info to make cluster illuminate indicator lights as needed plus interfaces with locker pump control to only allow axle locking in 4low
Thus with home made or after market module just need to insure resistance applied across the wires matches position transfer case in actually in and all should seem ok to pcm
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As I recall the TJ FSM listed the proper resistance for various plunger depths
Would also be easy to unplug the harness connector and measure resistance across 2 wires for each transfer case shift position
On the rubicon TJ the two wires from the sensor go straight to the pcm and then pcm interpretes the resistance to and sends PCI bus encoded digital info to make cluster illuminate indicator lights as needed plus interfaces with locker pump control to only allow axle locking in 4low
Thus with home made or after market module just need to insure resistance applied across the wires matches position transfer case in actually in and all should seem ok to pcm
Sent from my iPhone using Tapatalk
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