B4000 2WD V6-4.0L OHV (1994)
5. Accelerate the vehicle to 88 km/h (55 mph). Set the rotate rear select switch to the fourth gear position.
NOTE: The vehicle should shift to fourth gear before torque converter lock up is tested. If the vehicle does not shift to fourth gear check the
3-4 shift solenoid. (Refer to 3-4 Shift Solenoid Testing and Inspection.)
See: Shift Solenoid/Testing and Inspection/3-4 Shift Solenoid Valve
6. Hold speed steady at 88 km/h (55 mph). Depress the torque converter clutch switch.
View: Torque Converter Clutch Solenoid
7. If lockup does not occur, replace the torque converter clutch solenoid.
NOTE: When lockup occurs, engine speed will reduce.
8. If lockup occurs, the torque converter clutch solenoid is OK.