Non-Trouble Code Procedures
Road Testing VehicleNOTE: Always drive the vehicle in a safe manner according to driving conditions and obey all traffic laws.
The Shift Point Road Test and Torque Converter Operation Tests provide diagnostic information on shift controls and torque converter operation.
Shift Point Road Test
This test verifies that the shift control system is operating correctly.
1. Bring engine and transaxle up to normal operating temperature.
2. Operate vehicle with selector lever in (D) range.
3. NOTE: Shift speed ranges are approximate for all applications.
Apply minimum throttle and observe speeds at which upshift occurs and torque converter engages using the shift speeds chart.
Shift Speeds 3.0L 2V
Shift Speeds 3.0L 4V
4. Stop vehicle and move selector lever to D range. Repeat Step
3. Transaxle will make all upshifts except 3 - 4 and torque converter clutch apply should occur above 39 km/h (24 mph).
5. With vehicle speed above 39 km/h (24 mph), press accelerator pedal to floor, wide - open throttle (WOT). Transaxle should shift from third to second, or third to first, depending on the vehicle speed. The torque converter clutch should release.
6. With vehicle speed above 48 km/h (30 mph), move the selector lever from D range to 1 range (LOW) and remove foot from accelerator pedal. Transaxle should immediately downshift to second gear. When vehicle speed drops below 24 km/h (15 mph), transaxle should downshift into first gear.
7. If transaxle fails to upshift/downshift or TCC does not apply and release, refer to Diagnosis By Symptom for possible causes.