O/D Main Switch & O/D Off Indicator Light Circuit

O/D Main Switch & O/D Off Indicator Light Circuit

CIRCUIT DESCRIPTION
The O/D main switch contacts go open when the switch is pushed in and go closed when it is pushed out. In O/D main switch at OFF position, the O/D OFF indicator light lights up, and the ECM prohibits shifting to overdrive. The ECM also causes the O/D OFF indicator light to blink when a malfunction is detected. In this case, connecting the OBD If scan tool or TOYOTA hand-held tester to the DLC3 can display the DTC.





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INSPECTION PROCEDURE