Diesel Data: Automotive Repair

Transmission Control Switch Circuit


CIRCUIT DESCRIPTION
When the shift lever is in the "3" position (with transmission control switch is pressed), "3" in the shift position indicator light will come on. And when the shift lever is in the "D" position (with transmission control switch is released), "D" in the shift position indicator light will come on.
When the shift lever is in "3" position, the Engine Control Module (ECM) prohibits shifting to O/D.

WIRING DIAGRAM

Transmission Control Switch Circuit:






INSPECTION PROCEDURE












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