Shift Point Road Test: Notes

This test verifies that the shift control system is operating correctly.

1. Bring engine and transmission up to normal operating temperature.
2. Operate the vehicle with the transmission range selector lever in (D).
3. Apply minimum throttle and observe the speeds at which the upshift occurs and the torque converter engages.
4. With the transmission in OVERDRIVE (fourth gear), depress the transmission control switch. The transmission should downshift to third gear. Remove foot from accelerator pedal; engine braking should occur.
5. Press the accelerator pedal to floor (wide-open throttle). The transmission should shift from third to second gear or third to first, depending on vehicle speed. Torque converter clutch should disengage and then reapply.
6. With vehicle (D) range above 80 km/h (50 mph) and less than half throttle, move the transmission range selector lever from (D) range to MANUAL 2 range and remove foot from the accelerator pedal. The transmission should immediately downshift into second gear. With the vehicle remaining in MANUAL 2 range, move the transmission range selector lever into MANUAL 1 range. Transmission should downshift into first gear at speeds BELOW 48-56 km/h (30-35 mph).
7. If the transmission fails to upshift/downshift or the torque converter clutch does not apply and release, refer to DIAGNOSIS BY SYMPTOM  for concern diagnosis.