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 Transaxle 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 check must be conducted 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.

      • The installation position of SST is different for the D position and R position line pressure tests.


      1. Warm up the ATF.

      2. Lift the vehicle.

      3. Remove the engine under cover.

      4. A002CN5C01
        *a Test Plug A

        Remove the test plug A on the front 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.

      7. Start the engine and check the idle speed.

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

      9. Depress the accelerator pedal as much as possible with your right foot. Quickly read the highest line pressure reading when the engine speed reaches stall speed.

      10. Turn the ignition switch off.

      11. Remove SST and install the test plug A.

      12. A002CONC01
      13. *a Test Plug B

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

SST
09993-19015   ( 09993-00010, 09993-00040 )
  • Start the engine and check the idle speed.

  • Keep your left foot firmly on the brake pedal and move the shift lever to R.

  • Depress the accelerator pedal as much as possible with your right foot. Quickly read the highest line pressure reading when the engine speed reaches stall speed.

  • Turn the ignition switch off.

  • Remove SST and install the test plug B.

  • Clear the DTCs.

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  • Evaluation
    Problem Possible Cause
    Measured values at all positions are higher than specified
    • Solenoid (SLT) valve defective

    • Regulator valve defective

    Measured values at all positions are lower than specified
    • Solenoid (SLT) valve defective

    • Regulator valve defective

    • Oil pump defective

    Pressure is low when shift lever is in D only
    • D position circuit fluid leak

    • No. 1 clutch (C1) defective

    • No. 2 brake (B2) defective

    Pressure is low when shift lever is in R only
    • R position circuit fluid leak

    • No. 3 clutch (C3) defective

    • No. 2 brake (B2) defective