Transfer Case Actuator: Testing and Inspection

CHECK OF ELECTRONIC CONTROL COUPLING

SIMPLE OPERATION CHECK OF ELECTRONIC CONTROL COUPLING

1. Raise the vehicle.





2. Mark the front and rear tires for easy identification of tire rotation.
3. Adjust the parking brake lever to the normal conditions Procedures).
4. Pull the parking brake lever by two notches.
NOTE:
Activating the parking brake slightly prevents the drive force transferring to the rear wheels by a friction in the electronic control coupling. If the following FWD mode is checked without the parking brake activation, the drive force is transferred to the rear wheels by a friction in the electronic control coupling.

5. Start the engine, and move the selector lever into the D position.
6. Depress the accelerator pedal gradually, and maintain the vehicle speed at approximately 10 km/h (6.0 mph).
7. Switch the drive mode selector to the FWD mode, and check that the rear wheels are under FWD control (At this time, the AWD/LOCK indicators in the combination meter do not illuminate).
8. Stop the engine.
9. Start the engine again, and move the selector lever into the D position.
10. Depress the accelerator pedal gradually, and maintain the vehicle speed at approximately 10 km/h (6.0 mph).
11.
CAUTION:
The following checks in the AWD mode must be completed within one minute in total to protect the AWD drive system components and parking brake.

Switch the drive mode selector to the AWD mode, and check that the rear wheels are rotating
(At this time, the AWD indicator in the combination meter illuminates).
After the above checks are completed, if the rear wheel rotation satisfies the above conditions, it is judged that the electronic control coupling operates correctly. If the rear wheel rotation does not satisfy the above conditions, replace the electronic control coupling (Refer to Service and Repair).

RESISTANCE MEASUREMENT BETWEEN ELECTRONIC CONTROL COUPLING SOLENOID CONNECTOR TERMINALS





Disconnect the F-44-1 connector, and measure the resistance value between the connector terminals on the electronic control coupling side. If the measured resistance value is out of the standard value range, replace the electronic control coupling (Refer to Service and Repair).
Standard value: 2.2 - 4.0 ohms [at 20 °C (68°F)]