Road Test

Road Testing

- Before starting road tests. install vacuum gauge.
- Perform road tests, using "Symptom" chart, as follows:

"P" RANGE
1. Place selector lever in "P" range and start the engine. Stop the engine and repeat the procedure all other ranges including neutral.
2. Stop vehicle on a slight upgrade and place selector lever in "P" range. Release parking brake to make sure vehicle remains locked.

"R" RANGE
1. Move selector lever from "P" to "R", and note shift quality.
2. Drive the vehicle in reverse long enough to detect slippage or other abnormalities.

"N" RANGE
1. Manually shift the selector lever from "R" and "D" to "N" and note quality.
2. Release parking brake with selector lever in "N" range. Lightly depress accelerator pedal to make sure vehicle does not move. (When vehicle is new or soon after clutches have been replaced, vehicle may move slightly. This is not a problem.)

"D" RANGE
1. Move selector lever from "N" to "D" range, and note shift quality.

2. Using the Shift Schedule as a reference, drive vehicle in "D" range. Record, on symptom chart, respective vehicle speeds at which up- shifting and downshifting occur. Check that there is not a considerable jolt when shifting gears. Also determine the timing at which shocks are encountered during shifting and which clutches are engaged.

3. Check to determine if shifting to overdrive gear cannot be made while O.D. control switch is "OFF".
4. When vehicle is being driven in the 65 to 85 KPH (40 to 53 MPH) range in "D3" range at half to light throttle position, fully depress accelerator pedal to make sure it downshifts from 3rd to 2nd gear.
5. When vehicle is being driven in the 25 to 35 KPH (16 to 22 MPH) ("D2") range at half to light throttle position, fully depress accelerator pedal to make sure it downshifts from 2nd to 1st gear.

"2" RANGE
1. While vehicle is being driven in "2" range, make sure that it does not shift into 1st or 3rd gear, despite speed changes.
2. Move selector lever to "D" range and allow vehicle to operate at 40 to 50 KPH (25 to 31 MPH). Then, shift to "2" range to make sure it downshifts to 2nd gear.

"1" RANGE
1. Place selector lever to "1" range and allow vehicle. Ensure that it does not upshift from 1st to 2nd gear although vehicle speed increases.
2. While vehicle is being driven in "1" range, release accelerator pedal to make sure that engine compression acts as a brake.
3. Place selector lever into "D" or "2" range and allow vehicle to run at 20 to 30 KPH (12 to 19 MPH). Then, move selector lever to "1" range to make sure the downshift to 1st gear is made.

VEHICLE SPEED WHEN SHIFTING GEARS
1. Disconnect harness from A/T control unit. Carry out road test to determine if all items listed in the following chart are within their specified values.

CA20E Engine:

VG30E Engine:

2. Reconnect harness to A/T control unit. Carry out road test to see if shifting corresponds to the specified shift schedule pattern.

Shift Schedule