U340E AUTOMATIC TRANSMISSION / TRANSAXLE AUTOMATIC TRANSAXLE SYSTEM HYDRAULIC TEST

PERFORM HYDRAULIC TEST

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

·

Be careful to prevent the SST hose from contacting with the exhaust pipe.

·

This check must be conducted after checking and confirming that the engine is normal.

·

Perform this test with the A/C off.

·

Do not perform the stall speed test for longer than 5 seconds.

·

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

Warm up the ATF (Automatic Transmission Fluid).

ii.

Lift the vehicle up.

iii.

Remove the test plug on the front left side of the transaxle case and connect SST.

6.417,2.167 6.417,1.667 true 4.417,2 4.417,1.063 true 6.292,2.25 6.75,2.448 0.458,0.198 10 false SST 4.333,2.052 4.792,2.25 0.458,0.198 10 false SST

iv.

Lower the vehicle.

Fully apply the parking brake and chock all 4 wheels.

vi.

Connect the GTS to the DLC3.

vii.

Turn the ignition switch to ON.

viii.

Turn the GTS on.

ix.

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

Start the engine and check the idle speed.

xi.

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

xii.

Measure the line pressure when the engine is idling.

xiii.

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

xiv.

In the same way, do the test with the shift lever in R.

Specified 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 test	1100 to 1300 kPa (11.2 to 13.3 kgf/cm², 159 to 189 psi)	1600 to 1900 kPa (16.3 to 19.4 kgf/cm², 232 to 276 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 defective
Pressure is low only when shift lever is in R	· R position circuit fluid leak · Reverse clutch defective · 1st and reverse brake defective