Mechanical System Tests
Mechanical System Test Preparation1. Apply 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 ignition 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 03784 00C, 49 B019 901B 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 901B), and replace the gauge part of the SST (49 B019 902).
Caution:
^ Do not 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 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 4.91 - 9.80 Nm (5 - 100 kgf-cm, 43.4 - 86.7 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:
^ Do not 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: 2,300 - 2,600 rpm
FS engine: 2,200 - 2,500 rpm
7. Turn off the engine.
Evaluation of stall test
Time Lag Test
1. Perform mechanical system test preparation.
2. Start the engine and warm up the engine until the ATF temperature reaches 6 - 70 °C (141 - 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 3 measurements for each test and average the results using the formula.
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 seconds
N position - R position: 0.4 - 0.7 seconds
Evaluation of time lag test