No 4LO
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Logistics Pro
Joined: Aug 2009
Posts: 3,609
Likes: 324
From: Arizona
No 4LO
Tested my 4X4 a couple months ago, everything worked fine. Get down to the beach in Mexico, no 4LO. 4HI works great, when I switch to 4LO it just stays in 4HI and the LOW RANGE lamp does not illuminate. I have ESOF.
Have been too busy to look at it but planning on it this weekend. Any ideas right off the bat? Can AE see the 4X4 module? I have the FSM and will begin with the pinpoint tests, but just wanted to put this out ahead of time in case anyone who has worked on the 4X4 has any pointers. I am figuring it is electrical, ie the switch, wiring, fuse or shift motor. I have never worked on the shift motors and will have to read up on how they work.
Have been too busy to look at it but planning on it this weekend. Any ideas right off the bat? Can AE see the 4X4 module? I have the FSM and will begin with the pinpoint tests, but just wanted to put this out ahead of time in case anyone who has worked on the 4X4 has any pointers. I am figuring it is electrical, ie the switch, wiring, fuse or shift motor. I have never worked on the shift motors and will have to read up on how they work.
More Turbo
Joined: Mar 2011
Posts: 683
Likes: 1
From: cincinnati, oh.
don't hold me to this
but, I think I remember reading something about a relay out under the hood that controls the 4x4 stuff. could be a good place to start.
Posting Guru
Joined: Sep 2006
Posts: 1,081
Likes: 1
From: Montana
I had to have my transfer case rebuilt. its a BW1356 if I remember right. not what you have I am guess.
I ended up having to get the plate that the fork part would slide on re sleeved cause when I went into 4lo it would be loose enough to no engage 4lo.
I have pics somewhere. but I am pretty sure my transfer case is difference cause its a van with a quigley conversion.
hope its much simpler and cheaper for you
I ended up having to get the plate that the fork part would slide on re sleeved cause when I went into 4lo it would be loose enough to no engage 4lo.
I have pics somewhere. but I am pretty sure my transfer case is difference cause its a van with a quigley conversion.
hope its much simpler and cheaper for you
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
AE will read the system, but I don't know how well it troubleshoots. Put a meter on the two leads to the motor on the transfer case. Operate in and out of 4X4 LO. If the power switches between +12V and -12V, then it's the motor or mechanical. If not, then it's electrical.
Postmaster
Joined: Apr 2012
Posts: 2,613
Likes: 8
From: North Georgia
If the shifter motor is getting weak but still functioning for 4hi
On Motorbug... i get 4hi with no problems.
As soon as i try 4low i hear the motor clunk, low range never comes on... and after the clunk the 4x4 light goes out... and the front ds is in neutral.
ae does see tc codes but ill have to get them
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Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
The point I was "driving" at here was if the motor is getting the forward/reverse voltages when switching back and forth between hi/low... then the electrical is doing all it can. If the voltages are not there in both directions, then the first focus would be electrical. I'm just trying to break the troubleshooting into electrical or mechanical. A bad motor would fall under the heading "mechanical".
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