Mechanical System Tests
Mechanical System Test Preparation1. Engage the parking brake and use wheel chocks at the front and rear of the wheels.
2. Inspect the engine coolant.
3. Inspect the engine oil.
4. Inspect the ATF levels.
5. Inspect the IG timing.
6. Inspect the idle speed.
Line Pressure Test
1. Perform mechanical system test preparation.
Warning: Removing the square-head plug when the ATF is hot can be dangerous. Hot ATF can come out of the opening and badly burn you. Before removing the square-head plug, allow the ATF to cool.
2. Connect the SSTs (49 0378 400B, 49 B019 901 and 49 H019 002) to the line pressure inspection port.
3. Start the engine and shift the selector lever to D range and read the line pressure at idle.
Warning: Removing the SST when the ATF is hot can be dangerous. Hot ATF can come out of the opening and badly burn you. Before removing the SST, allow the ATF to cool.
4. Turn the engine off and remove the SST (49 B019 901), and replace the gauge part of the SST (49 B01 9 902)
Caution: Don't maintain WOT in any position/range for more than 5 seconds or transaxle damage will occur.
5. Start the engine and firmly depress the brake pedal with the left foot, and then depress the accelerator pedal to floor (WOT) with the right.
6. When the engine speed no longer increases, quickly read the line pressure and release the accelerator pedal.
7. Shift the selector lever to N position and let the engine idle for 1 minute or more to cool the ATF.
8. Read the line pressure at idle and at the engine stall speed for the 2, and 1 ranges and R position in the same manner.
Line Pressure Specification
9. Shift the selector lever to P position and turn off the engine
Warning: Removing the SST when the ATF is hot can be dangerous. Hot ATF can come out of the opening and badly burn you. Before removing the SST, allow the ATF to cool.
10. Remove the SST.
11. Install a new square head plug in the inspection port.
Tightening torque 5.0 - 9.8 Nm (50 - 100 kgf-cm, 44 - 86 inch lbs.)
Evaluation of Line Pressure Test
Stall Test
1. Perform mechanical system test preparation.
2. Start the engine and shift the selector lever to R position.
Caution: Don't maintain WOT in any position/range for more than 5 seconds or transaxle damage will occur.
3. Firmly depress the brake pedal with the left foot, and depress the accelerator pedal to floor (WOT) with the right.
4. When the engine speed no longer increases, quickly read the engine speed and release the accelerator pedal.
5. Shift the selector lever to N position and let the engine idle for 1 minute or more to cool the ATF.
6. Perform stall tests of D, 2, and 1 ranges in the same manner.
Engine stall speed
ZM engine: 2300 - 2600 rpm
FP engine: 2350 - 2650 rpm
7. Turn off the engine.
Evaluation Of Stall Test
Time Lag Teat
1. Perform mechanical system test preparation.
2. Start the engine and warm up the engine until the ATF temperature reaches 60 - 70°C (140 - 158°F).
3. Shift the selector lever from N position to D range.
4. Use a stopwatch to measure the time it takes from shifting until engagement is felt. Take three measurements for each test and average the results using the following formula.
Average time lag = Time 1 + Time 2 + Time 3 divided by 3
5. Perform the test for the following shifts in the same manner.
^ N position -> R position
Average time lag
N position -> D range: 0.4 - 0.7 sec.
N position -> R position: 0.4 - 0.7 sec.
Evaluation Of Time Lag Test