Overdrive Lockout (1994-95 AS, 1995-97 FJ)

On AS and FJ vehicles, the 41TE four-speed overdrive automatic transaxle includes an overdrive lockout function operated by a button on the instrument panel.
The lockout feature makes driving smoother in traffic at low to moderate speeds where overdrive is not needed. Otherwise the transaxle may shift in and out of overdrive, causing unnecessary shifting.

NOTE: THE OVERDRIVE LOCKOUT SWITCH ON 1994 AS VEHICLES IS A MOMENTARY CONTACT SWITCH. NO FJ VEHICLES USE A MOMENTARY CONTACT SWITCH.

Pushing the instrument panel button closes the switch. The TCM then locks out overdrive and provides a ground to the O/D lockout lamp.
With the overdrive locked out, the transaxle upshifts to third gear in the same manner as in overdrive. If the "3" position is selected on AS body vehicles, a high load is assumed and the part-throttle 2-3 upshift occurs at a higher speed to aid acceleration. If "3" is selected with overdrive locked out, an earlier downshift to second gear occurs. Wide-open throttle shifts are unaffected by the use of the overdrive lockout switch or selection of the "3" position.