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Pressure Test

Special Tools Required 

  1. Make sure the transmission fluid is filled to the proper level.
  2. Lift the vehicle up on a hoist, or apply the parking brake, block rear wheels, and raise the front of the vehicle. Make sure it is securely supported.
  3. Remove the transmission undercover.
    Fig 1: Removing Transmission Under Cover
    G03660533Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Remove the splash shield.
    Fig 2: Removing Splash Shield
    G03660534Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. Allow the front wheels to rotate freely.
  6. Connect the oil pressure gauges to the line pressure inspection port (A), 2nd clutch pressure inspection port (B), and 1st-hold clutch pressure inspection port (C). Do not allow dust or other foreign particles to enter the ports while connecting the gauges.
    Fig 3: Identifying Line Pressure Inspection Port (A), 2nd Clutch Pressure Inspection Port (B) And 1st-Hold Clutch Pressure Inspection Port (C)
    G03660535Courtesy of AMERICAN HONDA MOTOR CO., INC.
  7. Warm up the engine (the radiator fan comes on), then stop it and connect the HDS to the DLC (A).
    Fig 4: Identifying Data Link Connector
    G03660536Courtesy of AMERICAN HONDA MOTOR CO., INC.
  8. Start the engine, and run it at 2,000 rpm in the P or N position.
  9. Measure the line pressure at the line pressure inspection port (A).
    NOTE: Higher pressure may be indicated if measurements are made in shift lever position other than N or P.
    PRESSURE TEST - FLUID PRESSURE SPECIFICATION TABLE

    Pressure Fluid Pressure
    Standard Service Limit
    Line (A) 900-960 kPa (9.2-9.8 kgf/cm2 , 130-140 psi) 850 kPa (8.7 kgf/cm2 , 120 psi)
  10. Shift to the L position, and measure the 1st-hold clutch pressure at the 1st-hold clutch pressure inspection port (C) while holding engine speed at 2,000 rpm.
  11. Shift to the P position, and press the brake pedal. Keep pressing the brake pedal, and shift to the D position, then release the brake pedal.
  12. Press the accelerator very slowly to increase engine speed to 2,000 rpm gradually over 10 seconds (the transmission shifts to 2nd gear), then hold it at 1,500 rpm.
  13. Measure the 2nd clutch pressure at the 2nd clutch pressure inspection port (B).
    PRESSURE TEST - FLUID PRESSURE TABLE (1ST AND 2ND CLUTCH)

    Pressure Fluid Pressure
    Standard Service Limit
    1st-hold clutch (C) 760-830 kPa (7.7-8.5 kgf/cm2 , 110-120 psi) 710 kPa (7.2 kgf/cm2 , 100 psi)
    2nd clutch (B) 890-970 kPa (9.1-9.9 kgf/cm2 , 130-140 psi) 840 kPa (8.6 kgf/cm2 , 120 psi)
  14. Turn the engine off, then disconnect the oil pressure gauges from the 2nd clutch, 1st-hold clutch, and line pressure inspection ports.
  15. Install the sealing bolts to the 2nd clutch, 1st-clutch and line pressure inspection ports with the new sealing washers, and tighten the bolts to 18 N.m (1.8 kgf.m, 13 lbf.ft). Do not reuse old sealing washers.
  16. Connect the oil pressure gauges to the 3rd clutch pressure inspection port (D), 4th clutch pressure inspection port (E), and 5th clutch pressure inspection port (F).
    Fig 5: Identifying 3rd Clutch (D), 4th Clutch (E), And 5th Clutch (F) Pressure Inspection Ports
    G03660537Courtesy of AMERICAN HONDA MOTOR CO., INC.
  17. Start the engine with the transmission in the P position, and warm up the engine until the radiator fan comes on. With the brake pedal pressed, shift to the D position.
  18. Press the accelerator very slowly to increase engine speed to 2,000 rpm gradually over 10 seconds (the transmission shifts to 2nd gear), then hold it at 1,500 rpm.
  19. Release the brake pedal, then press the accelerator very slowly to increase engine speed to 2,000 rpm gradually over 10 seconds (the transmission will shift to 3rd, 4th, then 5th gear), and measure the 3rd clutch pressure at the 3rd clutch inspection port (D), 4th clutch pressure at the 4th clutch pressure inspection port (E), and 5th clutch pressure at the 5th clutch pressure inspection port (F).
    PRESSURE TEST - FLUID PRESSURE TABLE (3RD, 4TH AND 5TH CLUTCH)

    Pressure Fluid Pressure
    Standard Service Limit
    3rd clutch (D) 4th clutch (E) 5th clutch (F) 890-970 kPa (9.1-9.9 kgf/cm2 , 130-140 psi) 840 kPa (8.6 kgf/cm2 , 120 psi)
  20. Bring the engine back to an idle, then apply the brake to stop the wheels from rotating.
  21. Shift to the R position, then release the brake pedal. Raise the engine rpm to 2,000 rpm, and measure the 5th clutch pressure at the 5th clutch pressure inspection port (F).
    PRESSURE TEST - FLUID PRESSURE TABLE (5TH CLUTCH)

    Pressure Fluid Pressure
    Standard Service Limit
    5th clutch (F) in R 890-970 kPa (9.1-9.9 kgf/cm2 , 130-140 psi) 840 kPa (8.6 kgf/cm2 , 120 psi)
  22. Turn the engine off, then disconnect the oil pressure gauges from the 3rd, 4th, and 5th clutch pressure inspection ports.
  23. Install the sealing bolts to the 3rd, 4th, and 5th clutch pressure inspection ports with the new sealing washers, and tighten the bolts to 18 N.m (1.8 kgf.m, 13 lbf.ft). Do not reuse old sealing washers.
  24. Connect the oil pressure gauges to the 1st clutch pressure inspection port (G).
    Fig 6: Identifying 1st Clutch Pressure Inspection Port (G)
    G03660538Courtesy of AMERICAN HONDA MOTOR CO., INC.
  25. Start the engine, and let it warm up until the radiator fan comes on. Then shift to the L position, release the brake pedal, and measure the 1st clutch pressure at the 1st clutch pressure inspection port (G) while holding engine speed at 2,000 rpm.
    PRESSURE TEST - FLUID PRESSURE TABLE (1ST CLUTCH)

    Pressure Fluid Pressure
    Standard Service Limit
    1st clutch (G) 890-970 kPa (9.1-9.9 kgf/cm2 , 130-140 psi) 840 kPa (8.6 kgf/cm2 , 120 psi)
  26. If the measurements are out of service limit, problems and probable causes are listed in the table.
    PRESSURE TEST - PROBLEM AND PROBABLE CAUSE TABLE

    Problem Probable causes
    No or low line pressure
    • Torque converter
    • ATF pump
    • Regulator valve
    • Torque converter check valve
    • Low fluid level
    • Clogged ATF strainer
    No or low 1st clutch pressure
    • 1st clutch
    • O-rings
    No or low 2nd clutch pressure
    • 2nd clutch
    • O-rings
    No or low 3rd clutch pressure
    • 3rd clutch
    • O-rings
    No or low 4th clutch pressure
    • 4th clutch
    • O-rings
    No or low 5th clutch pressure
    • 5th clutch
    • O-rings
    No or low 5th clutch pressure in the R position
    • Servo valve
    • 5th clutch
    • O-rings
    No or low 1st-hold clutch pressure
    • 1st-hold clutch
    • O-rings
  27. Disconnect the oil pressure gauge from the 1st clutch pressure inspection port.
  28. Install the sealing bolt to the 1st clutch pressure inspection port with the new sealing washer, and tighten the bolt to 18 N.m (1.8 kgf.m, 13 lbf.ft). Do not reuse old sealing washer.
  29. Install the splash shield and transmission under cover.