Transfer Case - BW44-45
WARNING: This page is about a different car, the 2013 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
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) Check for Transfer Case DTCs. Refer to appropriate Electrical Diagnostic article. Depending on vehicle configuration (FCM, FDCM, or DTCM), perform the appropriate diagnostic procedure and verification test. |
| 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 fluid. Refer to CAPACITIES AND RECOMMENDED FLUIDS, DESCRIPTION . | |
| 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 fluid. Refer to CAPACITIES AND RECOMMENDED FLUIDS, DESCRIPTION . |
| 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, 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. |