Transmission Position Sensor/Switch: Testing and Inspection

Park/Neutral Starting and Back-Up Lamp Switch

The Park/Neutral starting switch is the center terminal of the three terminal switch. It provides ground for the starter solenoid circuit through the selector lever in PARK and NEUTRAL positions only.

1. To test the switch, remove the wiring connector from the switch and test for continuity between the center pin of the switch and the transaxle case. Continuity should exist only when the transaxle is in PARK or NEUTRAL.

2. Check gearshift cable adjustment before replacing a switch that tests bad.

The back-up lamp switch circuit is through the two outside terminals of the three terminal switch.

1. To test the switch, remove the wiring connector from the switch and test for continuity between the two outside pins. Continuity should only exist with the transaxle in the REVERSE position.

2. No continuity should exist from either pin to the transaxle case.