Overdrive Electrical Controls

OVERDRIVE ELECTRICAL CONTROLS
The overdrive off switch, valve body solenoid, case connectors and related wiring can all be tested with a 12 volt test lamp or a volt/ohmmeter. Check continuity of each component when diagnosis indicates this is necessary. Refer to Wiring Diagrams, for component locations and circuit information

Switch and solenoid continuity should be checked whenever the transmission fails to shift into fourth gear range.