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 is located on right side of cowl on Celica and Corona or left of cowl side on Pickup.
- 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 wiring connector back into computer.CAUTION: Insert ohmmeter probe from back side of connector.