PRECAUTIONS FOR DIAGNOSIS



  • After troubleshooting, and removing/installing of the electronic control 4WD system components, check the diagnosis code using M.U.T.-III. If a diagnosis code is set, erase it and check again that no diagnosis code is set.
  • Before performing a troubleshooting, check that all four wheels and tyres are same in size, in type, and in brand. The electronic control 4WD system will function correctly only when all four wheels and tyres are same in size, or tyre pressure is specified value.
  • If any abnormality occurs in the electronic control 4WD system, it flashes the indicators (4WD and 4WD LOCK) in the combination meter alternately to inform of the abnormality.
  • When the vehicle is used under some severe operational conditions (such as a long-time driving in 4WD on a sandy road, slushy road or road with deep snows or towing or long hill-climbing), the electronic control 4WD system illuminates the drive system fluid temperature warning lamp in the combination meter in order to protect the electronic control coupling fluid temperature, at the same time it flashes the indicator (4WD or LOCK) corresponding to the selected drive mode to inform of the abnormality.
  • The electronic control 4WD system is equipped with the fail-safe function which prohibits 4WD control and shifts to 2WD control if any abnormality occurs in the system. If there is a risk that the vehicle behaviour suddenly changes, the gradual shifting to 2WD control is chosen.