[RC4A-El] Transmission/Transaxle

MECHANICAL SYSTEM TEST [RC4A-EL]

Mechanical System Test Preparation
1. Engage the parking brake and use wheel chocks at the front and rear of the wheels.
2. Inspect the engine coolant level. (See ENGINE COOLANT LEVEL INSPECTION.)
3. Inspect the engine oil level. (See ENGINE OIL LEVEL INSPECTION.)
4. Inspect the ATF level. (See AUTOMATIC TRANSMISSION FLUID (ATF) INSPECTION [RC4A-EL].) Automatic Transmission Fluid (ATF) Inspection
5. Inspect the idle speed and ignition timing in the P position. (See ENGINE TUNE-UP.)
6. Wait until the engine and transmission reach normal operating temperature.

Line Pressure Test
1. Perform mechanical system test preparation. (See 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 HD64 406A, 49 0378 400B) to the line pressure inspection port and replace the gauge of the SST (49 0378 400B) with the SST (49 8019 901 B).





3. Start the engine and warm it up until the ATF reaches 60-70°C (140-158°F).
4. Shift the selector lever to the D range.
5. Read the line pressure while the engine is idling for the D range.
6. Read the line pressure while the engine is idling for the P, R, N positions and M range in the same manner as in Steps 4-5.
7. Stop the engine, then replace the SST (49 8019 901 B) with the gauge of the SST (49 0378 400B).
8. Start the engine.
9. Firmly depress the brake pedal with the left foot.
10. Shift the selector lever to the D range.

Caution
^ If the accelerator pedal is pressed for more than 5 s while the brake pedal is pressed, the transmission could be damaged. Therefore, perform Steps 11 and 12 within 5 s.

11. Gradually depress the accelerator pedal with the right foot.
12. When the engine speed no longer increases, quickly read the line pressure and release the accelerator pedal.
13. Shift the selector lever to the N position and idle the engine for 1 min or more to cool the ATF.
14. Read the line pressure at the engine stall speed for the M range and R position in the same manner as in Steps 9-13.

Line pressure





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.

15. Remove the SSTs.
16. Install a new square head plug and O-ring in the inspection port.

Tightening torque
10.8-12.7 N-m (110-130 kgf-cm, 96-112 in-lbf)

Evaluation of line pressure test





Stall Speed Test
1. Perform mechanical system test preparation. (See Mechanical System Test Preparation.)
2. Start the engine.
3. Firmly depress the brake pedal with the left foot.
4. Shift the selector lever to the D range.

Caution
^ If the accelerator pedal is pressed for more than 5 s while the brake pedal is pressed, the transmission could be damaged. Therefore, perform Steps 5 and 6 within 5 s.

5. Gently depress the accelerator pedal with the right foot.
6. When the engine speed no longer increases, quickly read the engine speed and release the accelerator pedal.
7. Shift the selector lever to the N position and idle the engine for 1 min or more to cool the ATF.
8. Perform a stall test of the M range and R position in the same manner as in Steps 3-7.
9. Turn off the engine Engine stall speed

Engine stall speed





Evaluation of stall test





Time Lag Test
1. Perform mechanical system test preparation. (See Mechanical System Test Preparation.)
2. Start the engine.
3. Warm up the engine until the ATF temperature reaches 60-70°C (140-158°F).
4. Shift the selector lever from the N position to D range.
5. Use a stopwatch to measure the time it takes from shifting until shock is felt. Take three measurements for each test and average from the results using the following formula.

Formula
Average time lag = (Time 1 + Time 2 + Time 3) / 3

6. Perform the test for the following shifts in the same manner Step 5.
^ N position -> R position

Time lag
N position -> D range: approx. 0.2-1.3 s
N position -> R position: approx. 0.2-1.3 s

Evaluation of time lag test