4X4 not working... running out of ideas!!!
DIAGNOSIS AND TESTING - TRANSFER CASE - NV233
DIAGNOSIS CHART Condition Possible Cause Correction
Transfer case difficult to shift or will not shift into desired range. 1) Transfer case electronically controlled shift system malfunction. 1) Verify proper operation per the appropriate diagnostic manual.
2) If vehicle was operated for an extended period in 4HI mode on dry surface, driveline torque load may cause difficulty. 2) Drive the vehicle in a straight line and momentarily release the accelerator. The transfer case can then be shifted to the desired mode.
3) Insufficient or incorrect lubricant. 3) Drain and refill transfer case with the correct quantity of MoparŽ ATF +4, Automatic Transmission Fluid.
4) Internal transfer case components binding, worn, or damaged. 4) Repair or replace components as necessary.
Transfer case noisy in all drive modes. 1) Insufficient or incorrect lubricant. 1) Drain and refill transfer case with the correct quantity of MoparŽ ATF +4, Automatic Transmission Fluid.
2) Internal transfer case components binding, worn, or damaged. 2) Repair or replace components as necessary.
Transfer case noisy while in, or jumps out of, 4LO mode. 1) Transfer case not completely engaged in 4LO position. 1) While rolling 2-3 MPH and the transmission in NEUTRAL, or clutch depressed on vehicles equipped with a manual transmission, shift transfer case to the 2WD or 4HI position, and then back into the 4LO position.
2) Range fork damaged, inserts worn, or fork is binding on the shift rail. 2) Repair or replace components as necessary.
3) Low range gear worn or damaged. 3) Repair or replace components as necessary.
Lubricant leaking from transfer case seals or vent. 1) Transfer case overfilled. 1) Drain lubricant to the correct level.
2) Transfer case vent closed or restricted. 2) Clean or replace vent as necessary.
3) Transfer case seals damaged or installed incorrectly. 3) Replace suspect seal.
Abnormal tire wear. 1) Extended operation in 4HI mode on dry surfaces, 1) Operate vehicle in 2WD mode on dry surfaces.
DIAGNOSIS CHART Condition Possible Cause Correction
Transfer case difficult to shift or will not shift into desired range. 1) Transfer case electronically controlled shift system malfunction. 1) Verify proper operation per the appropriate diagnostic manual.
2) If vehicle was operated for an extended period in 4HI mode on dry surface, driveline torque load may cause difficulty. 2) Drive the vehicle in a straight line and momentarily release the accelerator. The transfer case can then be shifted to the desired mode.
3) Insufficient or incorrect lubricant. 3) Drain and refill transfer case with the correct quantity of MoparŽ ATF +4, Automatic Transmission Fluid.
4) Internal transfer case components binding, worn, or damaged. 4) Repair or replace components as necessary.
Transfer case noisy in all drive modes. 1) Insufficient or incorrect lubricant. 1) Drain and refill transfer case with the correct quantity of MoparŽ ATF +4, Automatic Transmission Fluid.
2) Internal transfer case components binding, worn, or damaged. 2) Repair or replace components as necessary.
Transfer case noisy while in, or jumps out of, 4LO mode. 1) Transfer case not completely engaged in 4LO position. 1) While rolling 2-3 MPH and the transmission in NEUTRAL, or clutch depressed on vehicles equipped with a manual transmission, shift transfer case to the 2WD or 4HI position, and then back into the 4LO position.
2) Range fork damaged, inserts worn, or fork is binding on the shift rail. 2) Repair or replace components as necessary.
3) Low range gear worn or damaged. 3) Repair or replace components as necessary.
Lubricant leaking from transfer case seals or vent. 1) Transfer case overfilled. 1) Drain lubricant to the correct level.
2) Transfer case vent closed or restricted. 2) Clean or replace vent as necessary.
3) Transfer case seals damaged or installed incorrectly. 3) Replace suspect seal.
Abnormal tire wear. 1) Extended operation in 4HI mode on dry surfaces, 1) Operate vehicle in 2WD mode on dry surfaces.
Thread Starter
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Rookie
Joined: Sep 2010
Posts: 76
Likes: 0
Sorry for the delay... I actually got it fixed about a week ago but I forgot to follow up on what the fix was. I went to a local "Pull A Part" and I had found one for $50.00. took it home and installed it and nothing happened. I still had no four wheel drive. So just for giggles... I used Car Part (same company that a friend works for) and found the exact module that I had purchased from "Pull A Part", I bought it and had it shipped for $50.00. I installed it and BAM, it worked. The one lesson that I take from this is that you need to watch what you are buying. I was told by "Pull A Part" that since I left with it... it was "mine" and there are ZERO returns on ANYTHING electrical. It may have cost me an extra $50.00 for a NEW paper weight, but at least it works and the "others" I found were running $100.00 if not more!
Registered User
Joined: Nov 2008
Posts: 20
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ok, so Im in the same situation.
No lights no movement when switched.
Fuse and relay good, however the relay when i grabbed it to check. it was warm. Does this say anything to anyone?
Is this bad, or good? Warm means it has power at the relay, but not sure the switch is bad. Checked current at switch, i get readings of 12 and 10volts on different wires. none change when I move selector switch. zero read still zero, and 12 and10stay as well.
Please Help
No lights no movement when switched.
Fuse and relay good, however the relay when i grabbed it to check. it was warm. Does this say anything to anyone?
Is this bad, or good? Warm means it has power at the relay, but not sure the switch is bad. Checked current at switch, i get readings of 12 and 10volts on different wires. none change when I move selector switch. zero read still zero, and 12 and10stay as well.
Please Help
