When did Toyota come out with the add system?
Toyota introduced the Automatic Differential Disconnect (ADD) 4-wheel drive system on its trucks in 1989, and on the 4Runner with the 1990 redesign. This system is composed of a vacuum-activated shift fork in the front differential driver’s side axle tube: when the transfer case lever is moved to the 4Hi position, vacuum is applied to the fork
Which is the official source of Toyota service information?
Welcome to Toyota-Tech.eu, your official source of Toyota service and repair information. 1. The technical information published on this website is intended and made available only to users who have the necessary professional and technical skills, knowledge and qualifications, as well as the necessary equipment and tools.
Who is the authorised repairer for Toyota in Europe?
Such necessity must be assessed by a professional repairer (an Authorised Repairer if such upgrade or repair work is part of a warranty action by Toyota Motor Europe NV/SA, any of its affiliated companies and/or any of its national distributors).
What do you need to know about Toyota?
Use of Technical Information The technical information published on this website is intended and made available only to users who have the necessary professional and technical skills, knowledge and qualifications, as well as the necessary equipment and tools.
When did Toyota add 4 wheel drive system?
Toyota introduced the Automatic Differential Disconnect (ADD) 4-wheel drive system on its trucks in 1989, and on the 4Runner with the 1990 redesign.
Where is the actuator on a Toyota 4WD?
The actuator assembly is on the driver’s side of the differential. Remove the 4WD dash indicator plug (white plug) from the assembly, then remove the vacuum lines from the assembly. You can also remove the vacuum line brackets and hard lines from the differential housing.
Where are the diagnostic connectors on a Toyota?
Locations: Under the drivers side dash panel. Locations: Near the left hand strut tower. Near the right hand strut tower. The Toyota test mode is a ‘more sensitive’ mode entered by connecting terminals TE2 and E1. If TE2 is not in the diagnostic connector there is no test mode.
What is the test mode on a Toyota?
The Toyota test mode is a ‘more sensitive’ mode entered by connecting terminals TE2 and E1. If TE2 is not in the diagnostic connector there is no test mode.