Is the transfer case actuator on a Toyota 4WD?
The 4WD module has no self-diagnostics and the repair manual is little help in the way of diagnosing transfer case actuator/front differential automatic disconnecting systems. The wiring diagrams for the systems also don’t indicate when the monitoring switches (which track the internal location of the actuators) should be open or closed.
How do you remove an actuator from a car?
Remove the three bolts that hold the actuator to the transfer case and pull out the actuator. A little bit of oil should come out, and the shaft will remain in place. Remove the plastic cover from the actuator, as well as the small metal cover on the other side of it.
How to replace transfer case motor in Toyota Tundra?
Remove the rotational piece inside the actuator. Remove the three bolts that hold the actuator to the transfer case and pull out the actuator. A little bit of oil should come out, and the shaft will remain in place. Remove the plastic cover from the actuator, as well as the small metal cover on the other side of it.
Can a 4WD shift actuator be replaced?
After the new actuator was installed and the FIPG gasket was allowed to sit overnight, the transfer case was filled with gear lube and returned to service, now with functioning 4WD High/Low and center differential lock.
How do you replace the actuator on a Toyota 4Runner?
Replacing the actuator, which houses both control motors and all the switches, is a complicated procedure if you’ve never tackled it before. It requires transfer case removal and partial disassembly. Here’s what it looks like opened up, actuator still installed: The above is the transfer case open with the rear gear cluster installed.
What makes a Toyota 4WD shift actuator fail?
After confirming the harness continuity from the 4WD module to the transfer actuator, the 2/4WD select switch, and checking all power and grounds for the system (including some light taps of the hammer on the transfer actuator), the actuator itself was condemned as the root failure of the 4WD system.
Is there a diagnostic manual for Toyota 4WD?
Toyota provides little documentation and diagnostic help when it comes to their temporary 4WD systems. The 4WD module has no self-diagnostics and the repair manual is little help in the way of diagnosing transfer case actuator/front differential automatic disconnecting systems.