On Vehicle Inspection

Mechanical System Test [GF4A-El]
Mechanical System Test Preparation
1. Apply 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 idle speed and ignition timing in P position.

Line Pressure Test
1. Engine idling.
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. Before removing the square-head plug, allow the ATF to cool.





2) Remove the square head plug shown in the figure.





3) Connect the SSTs (49 H019 002, 49 B019 901, and 49 0378 400B) to the line pressure inspection port.
4) Start the engine.





5) Shift the selector lever to D range and read the line pressure at idle.
6) Turn the engine off.
2. Engine stall speed.

Caution: Perform the line pressure teat at engine Idling prior to performing the teat at engine stall. If line pressure is low at Idle do not perform the test at engine stall or further transaxle damage will occur.

1) Replace the SST (49 B019 901) to the 49 B019 902.
2) Start the engine.

Caution: Don't maintain WOT In any gear range for more than 5 seconds or transaxle damage will occur.

3) Firmly depress the brake pedal with the left foot, and then gradually depress the accelerator pedal to floor (WOT) with the right.
4) When the engine speed no longer increases, quickly read the line pressure and release the accelerator.
5) Shift the selector to N position and let the engine idle for 1 minute or more to cool the ATF.





ATF temperature 60 - 70°C (140 - 158°F). Turn off all electrical loads.
6) Read the line pressure at idle and at the engine stall speed for the remaining ranges in the same manner.
(1) 2 range
(2) 1 range
(3) R position
7) Shift the selector lever to P position.
8) Turn off the engine.
9) Remove the SSTs and install a new square head plug in the line pressure inspection port.
Tightening torque 5.0 - 9.8 Nm (50 - 110 kgf-cm, 44 - 86 inch lbs.)





Evaluation Of Line Pressure Test

Stall Speed Test

Caution: Perform the line pressure test at engine Idling prior to performing the test at engine stall. If line pressure is low at Idle do not perform the test at engine stall or further transaxle damage will occur.

1. Perform mechanical system test preparation.
2. Connect a tachometer.
3. Start the engine.
4. Shift the selector lever to D range.

Caution: Don't maintain WOT In any gear range for more than 5 seconds or transaxle damage will occur. If engine speed recorded by the tachometer exceeds maximum specified rpm, release accelerator pedal immediately. Clutch or band slippage is indicator.

5. Firmly depress the brake pedal with the left foot, and gently depress the accelerator pedal with the right.
6. When the engine speed no longer increases, quickly read the engine speed and release the accelerator pedal.
7. Shift the selector to N position and let the engine idle for 1 minute or more to cool the ATF.
8. Perform stall tests for the remaining ranges in the same manner.
1) D range
2) R position
3) 2 range
4) 1 range
Engine stall speed
ATF temperature: 60 - 70°C (140 - 158°F). Turn off all electrical loads.
2,000-2,500 rpm
9. Turn off the engine.





Evaluation Of Stall Test

Time Lag Test
1. Perform mechanical system test preparation.
2. Start the engine.
3. After normal operating temperature is reached, shift from N position to D range.
4. Use a stopwatch to measure the time it takes from shifting until shock is felt. Make three measurements for each test and average the results.
5. Perform the test for the following shifts in the same manner.
- N position->R position
Time lag
N position->D range ... below approx. 0.9 second
N position->R position ... below approx. 1.1 second





Evaluation Of Time Lag Test