1. Turbine speed sensor, output speed sensor and gear shift switch are located in the gearbox housing. The removal of these sensors requires removal of the pan and partial disassembly of the gearbox, so this work should be done at a specialized service station.
2. The electronic transmission control unit is located in the electronics box. This box is installed in the left corner of the engine compartment. Remove the screws, remove the cover of the box, disconnect the wiring connector and remove the control unit.