Shift Point Road Test

Shift Point Road Test

NOTE: Always drive the vehicle in a safe manner according to the driving conditions and obey all traffic laws.

NOTE: Shift speed ranges are approximate for all applications.

The shift point road 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 selector lever in the (D) position.

3. Apply minimum throttle and observe speeds at which an upshift occurs and the torque converter engages, refer to the Shift Speeds Chart.

4. With the transmission in Overdrive (O/D) (4th gear), press the Transmission Control Switch (TCS). The transmission should downshift to 3rd gear. Release the accelerator pedal; engine braking should occur.

5. Press the accelerator pedal to floor, Wide Open Throttle (WOT). The transmission should shift from 3rd to 2nd gear or 3rd to 1st, depending on vehicle speed. The Torque Converter Clutch (TCC) should disengage and then reapply.

6. With the selector lever in the (D) position and vehicle speed above 80 km/h (50 mph) and less than half throttle, move the selector lever from the (D) position to the manual 2 position and release the accelerator pedal. The transmission should immediately downshift into 2nd gear. With the vehicle remaining in 2nd gear, move the selector lever into the manual 1 position, and release the accelerator pedal. The transmission should downshift into 1st gear at vehicle speeds approximately below 45-56 km/h (28-35 mph).

7. If the transmission fails to upshift/downshift or TCC (Torque Converter Clutch) does not apply and release, refer to Diagnosis By Symptom Diagnosis By Symptom.

Shift Speed Chart

NOTE: Shift speed ranges are approximate for all applications. For specific applications (engine, axle ratio and application), refer to the Automatic Transmission Specification booklet. Always drive the vehicle in a safe manner according to the driving conditions and obey all traffic laws.