Service manual page AT-56 with automatic transmission road test…

2. Using the shift schedule as a reference, drive vehicle in "D range, Record, on symptom chart, respective vehicle speeds at which up shifting l1si 2nd and 2nd 3rd) and down- 5. shifting l3rd ~ 2nd and 2nd - 1st) occur. These speeds are to be read a: three different 6, throttle positions (light, hall and full), respec- tively Also determine the timing 5'. Mick shocks are encountered during shifting and which clutches are engaged. D'lv if a 4' Wow. 513277 3. Next, read vehicle speed at which transmission is locked up. 4 When vehicle is being driven in the 65 to 85 run/h V43 to 50 MPHi range in D3 range at half to light throttle position, fully depress ac- celerator pedal to make sure it downshifts from 3rd to 2nd gear. 5. When vehicle is being driven in the 25 to 35 km/h l'l6 to 22 MPH) (Dy rangel at half to light throttle position, fully depress accelerator pedal to make sure it downshifts from 2nd to lst gear. 2" RANGE 1. Shift to "2" range and check to make sure that vehicle starts to rnove in lst gear. 2. Increase vehicle speed to make sure it upshifts from 1st to 2nd gear. 3. Further increase vehicle speed. Make sure it does not unshift to 3rd gear a. While drivrng vehicle at the 25 to 35 km/h (is to 22 MPHl with throttle at half to light Road Jestingl Cont'd)__'___ oosition (22 range), fully depress accelerator pedal to make sure it downshifts from 2nd.; lst gear, Allow vehicle to run idle while in 2nd gear make sure that it downshifts to in gear. Shift control lever to D range and allow vehicle to operate at 40 to 50 km/h (25 to 31 . MPH), Then, shift to "2" range to make surs' it downshifts to 2nd gear. ' RANGE ,- " Shift control lever to "1" range and allow vehicle to run. Ensure that it does not upshift . from lst to 2nd gear although vehicle speed in ' creases. While vehicle is being driven in 1" range, release accelerator pedal to make sure that engine compression acts as a brake. Shift control lever to "D" or 2" range and allow vehicle to run at 20 to 30 km/h (12 to 19 MPH), Then, shift control lever to "1 range to make sure the downshift to lst gear is made. AT-56