AUTOMATIC TRANSAXLE SYSTEM HYDRAULIC TEST


  1. PERFORM HYDRAULIC TEST


    1. Measure the line pressure.

      CAUTION:

      A 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 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 the exhaust pipe.

      • This test must be performed after checking and confirming that the engine is normal.

      • Perform this test with the air conditioning off.

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

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

      • Perform this test with the AUTO function (shift-linked function) of the electronic parking brake system off.

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      1. Warm up the ATF (Automatic Transmission Fluid).

      2. Lift the vehicle.

      3. Remove the engine under cover.

      4. A01VXEJN01

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

        SST
        09993-19015   ( 09993-00010, 09993-00040 )

      5. Lower the vehicle.

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

        Tech Tips

        When the electric parking brake switch assembly is pulled 2 times (2 lock operations), the maximum amount of braking force is applied.

      7. Connect the GTS to the DLC3.

      8. Start the engine.

      9. Enter the following menus: Powertrain / Transmission / Active Test / Control the Shift Position.


        Powertrain > Transmission > Active Test
        Tester Display
        Control the Shift Position

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

        Specified Line Pressure
        Condition D Position
        Idling

        360 to 430 kPa

        (3.6 to 4.4 kgf/cm2, 52 to 63 psi)

      11. Turn the engine switch off.

      12. A01RBPI

        Disconnect the connector from the wiring harness connector.

        Tech Tips

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

      13. Start the engine.

      14. Depress the brake pedal firmly with your left foot, move the shift lever to D, depress the accelerator pedal as much as possible with your right foot and quickly read the line pressure when the engine reaches the stall speed.

        Specified Line Pressure
        Condition D Position
        Stall test

        1100 to 1400 kPa

        (11.2 to 14.3 kgf/cm2, 159 to 204 psi)

      15. Turn the engine switch off.

      16. Connect the connector.

      17. Depress the brake pedal firmly with your left foot, move the shift lever to R, and check the line pressure with the engine idling and then depress the accelerator pedal as much as possible with your right foot and quickly read the line pressure when the engine reaches the stall speed.

        Specified Line Pressure
        Condition R Position
        Idling

        800 to 950 kPa

        (8.1 to 9.7 kgf/cm2, 116 to 138 psi)
        Stall test

        1900 to 2200 kPa

        (19.3 to 22.5 kgf/cm2, 275 to 320 psi)

      18. Remove SST and install the test plug.

      19. Clear the DTCs.

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        Powertrain > Transmission > Clear DTCs
        Evaluation
        Test Result Possible Cause
        Measured values are higher than the specified value in all positions

        • Solenoid (SLT) valve malfunction

        • Regulator valve malfunction
        Measured values are lower than the specified value in all positions

        • Solenoid (SLT) valve malfunction

        • Regulator valve malfunction

        • Oil pump malfunction
        Pressure is low in D only

        • D position circuit fluid leak

        • No. 1 clutch (C1) malfunction
        Pressure is low in R only

        • R position circuit fluid leak

        • No. 2 brake (B2) malfunction

        • No. 3 brake (B3) malfunction