CVT Pressure Tests

Special Tools Required
A/T oil pressure gauge set (  07406-0020004)
 

A/T low pressure gauge (  07406-0070001)
 


1.Before testing be sure the transmission fluid is filled to the proper level.

2.Raise the front of the vehicle, and make sure it is securely supported.

3.Set the parking brake, and block rear wheels securely.

4.Remove the splash shield.

5.Allow the front wheels to rotate freely.

6.Warm up the engine (the radiator fan comes on), then stop it and connect the tachometer.

7.Connect the special tool (07406-0020004) to the forward clutch pressure inspection hole (A).

 

8.Connect the special (07406-0020004) to the reverse brake inspection hole (B).

9.Connect a commercial available oil pressure gauge that measures 4,900 kPa (4.90 MPa, 50.0 kgf/cm2, 711 psi) or more, and use the special tool (07406-0020004) to the drive pulley pressure inspection hole (C) and driven pulley pressure inspection hole (D).

NOTE: Drive pulley pressure and driven pulley pressure may be above 3,430 kPa (3.43 MPa, 35.0 kgf/cm2, 498 psi) when there is a transmission problem that cause the PCM to go into the fail-safe mode.

10.Connect the special tool (07406-0070001) to the lubrication pressure inspection hole (E).

 

11.Start the engine.

12.Shift to [D] position, and measure the forward clutch pressure at 1,700 rpm (min-1).

13.Shift to [R] position, and measure the reverse brake pressure at 1,700 rpm (min-1).

14.Shift to [N] position, and measure the drive pulley pressure and driven pulley pressure at 1,700 rpm (min-1).

15.Measure the lubrication pressure at 2,500 rpm (min-1).

Pressure Service Limit 
Forward Clutch 1.44-1.71 MPa
(14.7-17.4 kgf/cm2, 209-247 psi) 
Reverse Brake 1.44-1.71 MPa
(14.7-17.4 kgf/cm2, 209-247 psi) 
Drive Pulley 0.31-0.58 MPa
(3.2-5.9 kgf/cm2, 46-84 psi) 
Driven Pulley 0.43-0.91 MPa
(4.4-9.3 kgf/cm2, 63-130 psi) 
Lubrication 0.27-0.40 MPa
(2.8-4.1 kgf/cm2, 40-58 psi) 

16.Disconnect the special tools and oil pressure gauge after pressure testing.

17.Install the sealing bolts with new sealing washers, and tighten the bolts to 18 N·m, (1.8 kgf·m, 13 lbf·ft). Do not reuse the sealing washers.

18.If the measurements are out of the service limit, problems and probable causes are listed in the table below.

Problem Probable Cause 
No or low forward clutch pressure 
  • Forward clutch
 
No or low reverse brake pressure 
  • Reverse brake
 
No or low drive pulley pressure 
  • ATF pump
  • PH regulator valve
  • Drive pulley control valve
  • Driven pulley control valve
 
Drive pulley pressure too high 
  • PH regulator valve
  • Drive pulley control valve
  • Driven pulley control valve
  • CVT speed change control valve
 
No or low driven pulley pressure 
  • ATF pump
  • PH regulator valve
  • Drive pulley control valve
  • Driven pulley control valve
  • CVT pulley pressure control valve
 
Driven pulley pressure too high 
  • PH regulator valve
 
No or low lubrication pressure 
  • ATF pump
  • Lubrication valve