Shift Point Road Test

Shift Point Road Test

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

NOTE: If equipped, turn the power take-off (PTO) unit off for correct test results. For a description of PTO operation, refer to Transmission Electronic Control System in this section.

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) range.
3. Apply minimum throttle and observe the speeds at which the upshift occurs and the torque converter engages. (Refer to the shift speed chart.)
4. Press the accelerator pedal to the floor (wide-open throttle). The transmission should shift from sixth to fifth gear or fifth to third, depending on vehicle speed. Torque converter clutch should disengage and then reapply.
5. With the vehicle speed above 48 km/h (30 mph), move the transmission range selector lever to manual third gear. The transmission should immediately have a fifth to third shift. When the vehicle speed drops to 32 km/h (20 mph) a three to one shift should occur.
6. If transmission fails to upshift/downshift or if the torque converter clutch does not apply and release, refer to Diagnosis By Symptom in this section for concern diagnosis.

Shift Speed

Shift Speeds - Diesel:

Shift Speeds - Gasoline: