Line Pressure Test

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 you. 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 0378 400C) to the line pressure inspection port, then replace the gauge of the SST (49 0378 400C) with the SST (49 B019 901B).
4 Start the engine.
5 Shift the selector lever to D range and read the line pressure at idle.





ATF temperature
60 - 70°C (140 - 158°F) Turn off all electrical loads

6 Turn the engine off.
2. Engine stall speed.

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 Stop the engine, then replace the SST (49 B019 901 B) with the gauge of the SST (49 0378 400C).
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.
6 Read the line pressure at idle and at the engine stall speed for the remaining ranges in the same manner.
- S range
- L range
- R range





ATF temperature
60 - 70°C (140 - 158°F) Turn off all electrical loads

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 4.91 - 9.80 Nm (50 - 100 kgf-cm, 43.4 - 6.7 inch lbs.)





Evaluation of line pressure test