Overdrive electrical controls. Gearshift cable

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 Group 8W, 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.

Gearshift cable

(1) The shifter lever and gate positions should be in alignment with all transmission PARK, NEUTRAL, and gear detent positions.

(2) Engine starts must be possible with shift lever in PARK or NEUTRAL gate positions only. Engine starts must not be possible in any other gear position.

(3) With shift lever handle in:

(a) PARK position-Apply forward force on center of lever and remove pressure. Engine starts must be possible.

(b) PARK position-Apply rearward force on center of lever and remove pressure. Engine starts must be possible.

(c) NEUTRAL position-Normal position. Engine starts must be possible.

(d) NEUTRAL position-Engine running and brakes applied, apply forward force on center of shift lever. Transmission shall not be able to shift from neutral to reverse.