U441E AUTOMATIC TRANSMISSION / TRANSAXLE AUTOMATIC TRANSAXLE SYSTEM HYDRAULIC TEST

PERFORM HYDRAULIC TEST

0.74,0.49 0.448,0.24 false 0.156,0.146 0.615,0.344 0.458,0.198 10 false SST 2.26,1.406 2.719,1.604 0.458,0.198 10 false SST

Measure the line pressure.

CAUTION:: The line pressure test should always be carried out with at least 2 people. One person should observe the condition of wheels and wheel chocks while the other is performing the test.

NOTICE:: ·

Perform the test at the normal operating ATF (Automatic Transmission Fluid) temperature 50° to 80°C (122° to 176°F).

·

Prevent the SST hose from interfering with the exhaust pipe.

·

This test must be conducted after checking and adjusting the engine.

·

Perform this test with the air conditioning off.

·

Do not continue the stall test for more than 5 seconds.

·

When performing the stall speed test repeatedly, wait for 15 seconds or more between tests.

Warm up the ATF.

ii.

Lift the vehicle up.

iii.

Remove the engine under cover.

iv.

Remove the test plug on the transmission case center right side and connect SST.

Lower the vehicle.

vi.

Fully apply the parking brake and chock all 4 wheels.

vii.

Connect the GTS to the DLC3.

viii.

Turn the ignition switch to ON.

ix.

Turn the GTS on.

Enter the following menus: Powertrain / Engine and ECT / Data List.

Powertrain > Engine and ECT > Data List

Tester Display
Engine Speed
A/T Oil Temperature 1

50003 234 9,406

xi.

Start the engine and check the idling speed.

xii.

Keep your left foot pressing firmly on the brake pedal and move the shift lever to D.

xiii.

Measure the line pressure when the engine is idling.

xiv.

Depress the accelerator pedal all the way down. Quickly read the highest line pressure when engine speed reaches stall speed.

xv.

Perform the test in the R position in the same manner.

Standard Line Pressure:
Condition	D Position kPa (kgf/cm², psi)	R Position kPa (kgf/cm², psi)
Idling	372 to 412 kPa (3.7 to 4.2 kgf/cm², 53 to 60 psi)	553 to 623 kPa (5.6 to 6.4 kgf/cm², 80 to 91 psi)
Stall	1087 to 1207 kPa (11.1 to 12.3 kgf/cm², 158 to 175 psi)	1423 to 1678 kPa (14.5 to 17.1 kgf/cm², 206 to 243 psi)

Evaluation:
Problem	Possible Cause
Measured values at all positions are higher than specified	· Shift solenoid valve SLT defective · Regulator valve defective
Measured values at all positions are lower than specified	· Shift solenoid valve SLT defective · Regulator valve defective · Oil pump defective
Pressure is low only when shift lever is in D	· D position circuit fluid leak · Forward clutch (C1) defective
Pressure is low only when shift lever is in R	· R position circuit fluid leak · Reverse clutch (C3) defective · 1st and reverse brake (B3) defective