Speed Sensor
- Jack up one rear wheel and support off ground.
- Release parking brake. Place shift lever in "N" position. Unplug wiring connector from computer. Computer location; Celica & Corona, right cowl side. Pickup, left cowl side.
- Test "ON-OFF" cycles of speed sensor by connecting positive terminal of ohmmeter to wiring connector terminal and connecting negative terminal to ground.
- Turn wheel slowly, checking to see that ohmmeter needle deflects consistently. Plug in wiring connector back into computer.CAUTION: Insert ohmmeter probe from back side of connector.