AUTOMATIC TRANSAXLE SYSTEM HYDRAULIC TEST

  1. PERFORM HYDRAULIC TEST

    1. 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.

      Note:

      • Perform a test at the normal operating Automatic Transaxle Fluid (ATF) temperature: 50 to 80°C (122 to 176°F)

      • Be careful to prevent the hose of SST from interfering with the exhaust pipe.

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

      • Perform the test with the A/C off.

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

      1. Warm up the ATF.

      2. Lift the vehicle up.

      3. Remove the engine under cover.

      4. C226143E02

        Remove the test plug on the transaxle case and install SST.

        09992-00095

        09992-00231

        09992-00271

      5. Lower the vehicle.

      6. Fully apply the parking brake and chock the 4 wheels.

      7. Connect the GTS to the DLC3.

      8. Start the engine.

      9. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Shift Position.

        Powertrain > Engine and ECT > Active Test

        Tester Display

        Control the Shift Position

      10. Move the shift lever to D, and then use the GTS to hold 3rd gear using Active Test. Measure the line pressure while the engine is idling.

        Table 1. Specified Line Pressure

        Condition

        Shift Lever in D

        Idling

        360 to 430 kPa

        (3.7 to 4.4 kgf/cm2, 52 to 62 psi)

      11. Turn the ignition switch off.

      12. C267931

        Disconnect the harness connector from the wiring harness connector.

        Tip:

        Disconnect the connector only when performing the D position stall test.

      13. Start the engine.

      14. Firmly depress the brake pedal, move the shift lever to D, depress the accelerator pedal all the way down, and check the line pressure while the stall test is performed.

        Table 2. Specified Line Pressure

        Condition

        Shift Lever in D

        Stall test

        1160 to 1350 kPa

        (11.8 to 13.8 kgf/cm2, 168 to 196 psi)

      15. Turn the ignition switch off.

      16. Connect the harness connector, depress the brake pedal firmly, move the shift lever to R, and check that the line pressure while the engine is idling and during the stall test.

        Table 3. Specified Line Pressure

        Condition

        Shift Lever in R

        Idling

        670 to 820 kPa

        (6.8 to 8.4 kgf/cm2, 97 to 119 psi)

        Stall test

        1650 to 1910 kPa

        (16.8 to 19.5 kgf/cm2, 239 to 277 psi)

      17. Remove SST, install the test plug.

      18. Clear the DTCs.

        Click here

        Powertrain > Engine and ECT > Clear DTCs

        Table 4. Evaluation

        Test Result

        Possible Cause

        Measured values are higher than the specified value in all positions

        • Shift solenoid valve SLT defective

        • Regulator valve defective

        Measured values are lower than the specified value in all positions

        • Shift solenoid valve SLT defective

        • Regulator valve defective

        • Oil pump defective

        Pressure is low in D only

        • D position circuit fluid leak

        • Clutch No. 1 (C1) defective

        Pressure is low in R only

        • R position circuit fluid leak

        • Brake No. 2 (B2) defective

        • Brake No. 3 (B3) defective