Four wheel drive not engaging

Hi,

It sounds like it could either be related to the actuator or the transfer case control module. Have you tried having it scanned for diagnostic trouble codes? Also, you indicated there was a clicking sound. Is that from the transfer case or the front axle?

Let me know. Also, there are three different possible transfer cases used. On the rear of the case you will see a round metal label. It should indicate which transfer case you have.

Here are the three possibilities:

Change Vehicle Bookmarks Library Request Conversion Calculator Technician's Reference - Collision
transfer case

2002 Dodge or Ram Truck Durango RT 4WD V8-5.9L VIN Z LDC
Procedures
Vehicle Transmission and Drivetrain Transfer Case Service and Repair Procedures
PROCEDURES
NV133 - Transfer Case
NV233 - Transfer Case
NV244 - Transfer Case

Let me know.

Joe

I have to be honest. It sounds like the actuator has failed or the sensor assembly. The only way to be sure is to check if there is power going where it needs to be or by removing the actuator and seeing if it is moving when you switch.

When you try to shift to 4wd, have you tried doing it with the transmission in neutral?

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Here are the directions for replacing the motor / sensor assembly. It is the same for all of the models. The attached pics correlate with the directions.

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Note: Before just replacing it, check the connection as well as test it when removed.

2002 Dodge or Ram Truck Durango RT 4WD V8-5.9L VIN Z LDC
NV233 - Transfer Case
Vehicle Powertrain Management Transmission Control Systems Actuators and Solenoids - Transmission and Drivetrain Actuators and Solenoids - Transfer Case Transfer Case Actuator Service and Repair Procedures NV233 - Transfer Case
NV233 - TRANSFER CASE
NV233 - Transfer Case
SHIFT MOTOR / REMOVAL
1. Raise the vehicle on a suitable hoist.
2. Remove the front propeller shaft.
3. Disengage the wiring connectors from the shift motor and mode sensor.
4. Remove the front output shaft companion flange from the transfer case.

Pic 1

5. Remove the bolts (Fig. 79) holding the shift motor and mode sensor assembly onto the transfer case.
6. Separate the shift motor and mode sensor assembly from the transfer case.

INSTALLATION
1. Verify that the shift sector O-ring is clean and properly positioned over the shift sector and against the transfer case.
2. Position the shift motor and mode sensor assembly onto the transfer case.

Pic 2

3. Install the bolts (Fig. 80) to hold the assembly onto the transfer case.
Tighten the bolts to 16 - 24 Nm (12 - 18 ft. Lbs.).

CAUTION: If the original shift motor and mode sensor assembly bolts are reused, be sure to use Mopar Lock & Seal or Loctite(tm) 242 to replenish the lock patch material originally found on the bolts.

4. Engage the wiring connectors to the shift motor and mode sensor.
5. Install the transfer case front output shaft companion flange onto the transfer case.
Tighten the flange nut to 122 - 176 Nm (90 - 130 ft. Lbs.).

6. Install the front propeller shaft.
7. Refill the transfer case as necessary.
8. Lower vehicle and verify transfer case operation.

Let me know what you find.

Joe