Toyota U140/U240 Series Diagnostic Information
This transmission has some unique problems that can cause you to scratch your head. Add the lack of information available from the manufacturer and your frustration level can skyrocket. Here are some common problems and suggestions on how to resolve them.
Toyota vehicles using either the U140 or 240 series transmissions (see Figure 1) are known to produce a brutal 2-3 shift, to the point that the direct clutch disintegrates and spreads debris into the system, taking out the drum and cover (see Figure 2).