Diesel Data: Automotive Repair

Backup Lamp Switch: Testing and Inspection

Back-Up Lamp Switch

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.