Transmission Mode Switch: Description and Operation

Performance Mode Circuit Check:

Purpose:
The performance mode switch enables the operator to select a more aggressive shift pattern within the midrange throttle position (40% - 100%).

Operation:
When the performance mode is selected, the B+ performance mode input signal is momentarily toggled to zero volts. The PCM enters performance mode and turns on the performance mode indicator lamp (within the switch). While in performance mode, shifts will be firmer and delayed 1-3 mph upshifts or 1-3 mph downshifts. Normal operation is obtained by toggling the performance mode switch again, or when the ignition switch is cycled "OFF" then "ON".