Pressure Test
Pressure TestSpecial Tools Required
- A/T clutch pressure gauge set 07406-0020400 or 07406-0020401
- A/T pressure hose, 2,210 mm 07MAJ-PY4011A
- A/T pressure hose adapter 07MAJ-PY40120
1. Before testing, be sure the transmission fluid is filled to the proper level.
2. Lift the vehicle up on a lift 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 under cover.
4. Remove the splash shield.
5. Allow the front wheels to rotate freely.
6. Connect the oil pressure gauges to the line pressure inspection hole (A), 2nd clutch pressure inspection hole (B), and 1st-hold clutch pressure inspection hole (C). Do not allow dust or other foreign particles to enter the holes while connecting the gauges.
7. Warm up the engine (the radiator fan comes on), then stop it and connect the HDS to the DLC (A).
8. Start the engine, and run it at 2,000 rpm in the P or N position.
9. Measure line pressure et the line pressure inspection hole (A).
NOTE: Higher pressure may be indicated if measurements are made in shift lever position other than N or P.
10. Shift to the L position, and measure 1st-hold clutch pressure et the 1st-hold clutch pressure inspection hole (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 2nd clutch pressure at the 2nd clutch pressure inspection hole (B).
14. Turn the engine off, then disconnect the oil pressure gauges from the 2nd crutch, 1st-hold clutch, and line pressure inspection holes.
15. Install the sealing bolts to the 2nd crutch, 1st-crutch and line pressure inspection holes with the new sealing washers, and tighten the bolts to 18 Nm (1.8 kgf-cm, 13 ft. lbs.). Do not reuse old sealing washers.
16. Connect the oil pressure gauges to the 3rd clutch pressure inspection hole (D), 4th clutch pressure inspection hole (E), and 5th clutch pressure inspection hole (F).
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 3rd clutch pressure at the 3rd clutch inspection hole (D), 4th clutch pressure et the 4th clutch pressure inspection hole (E), and 5th clutch pressure at the 5th clutch pressure inspection hole (F).
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 5th clutch pressure at the 5th clutch pressure inspection hole (F).
22. Turn the engine off, then disconnect the oil pressure gauges from the 3rd, 4th, and 5th clutch pressure inspection holes.
23. Install the sealing bolts to the 3rd, 4th, and 5th clutch pressure inspection holes with the new sealing washers, and tighten the bolts to 18 Nm (1.8 kgf-cm, 13 ft. lbs.). Do not reuse old sealing washers.
24. Connect the oil pressure gauges to the 1st clutch pressure inspection hole (G).
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 1st clutch pressure at the 1st clutch pressure inspection hole (G) while holding engine speed at 2,000 rpm.
26. If the measurements are out of service limit, problems and probable causes are listed in the table.
27. Disconnect the oil pressure gauge from the 1st clutch pressure inspection hole.
28. Install the sealing bolt to the 1st clutch pressure inspection hole with the new sealing washer, and tighten the bolt to 18 Nm (1.8 kgf-cm, 13 ft. lbs.). Do not reuse old sealing washer.
29. Install the splash shield and transmission under cover.