Overdrive Switch: Testing and Inspection

CIRCUIT DESCRIPTION
The O/D main switch contacts go open when the switch is pushed in and go closed when it is pushed once again.
In O/D main switch OFF position, the O/D OFF indicator lights up, and the ECM prohibits shifting to O/D.






WIRING DIAGRAM

INSPECTION PROCEDURE
O/D OFF indicator light does not light up.













O/D OFF indicator light remains ON