Shift Point Road Test

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

1. Bring engine and transmission up to normal operating temperature.
2. Operate vehicle with transmission range selector lever in D6 position.
3. Apply minimum throttle and observe speeds at which upshift occurs and torque converter engages. Refer to the SHIFT SPEEDS TABLE .
4. With the transmission in D6, move the range selector lever into the D4 position. The transmission should downshift to 4th gear. Release the accelerator pedal; engine braking should occur.
5. Press the accelerator pedal to floor, wide open throttle (WOT). Transmission should shift from 4th to 3rd, depending on vehicle speed. The torque converter clutch should disengage and then reapply.
6. With the transmission in D6 position and speed above 80 km/h (50 mph) and less than half throttle, move the transmission range selector lever from D6 position to manual 2 position and remove pressure from the accelerator pedal. The transmission should downshift into 2nd gear. With the vehicle remaining in manual 2 position, move the transmission range selector lever into manual 1 position and release the accelerator pedal. The transmission should downshift into 1st gear at speeds below approximately 45-56 km/h (28-35 mph).
7. If the transmission fails to upshift/downshift or the torque converter clutch does not apply and release, refer to DIAGNOSIS BY SYMPTOM .

Shift Speeds