HYDRAULIC PRESSURE TEST


note Prior to this test, check that the fuel level warning does not flash and the drive battery is charged enough. If the fuel level warning flashes, refill the fuel tank. If the drive battery is partially discharged, recharge the battery.

1.Install the following special tools at the hydraulic pressure outlet ports shown in the figure.

  • Oil pressure gauge <3.0 MPa> (MD998330)
  • Joint (MD998332)
2.
warning Observe the following safety precautions during this test.

  • Service technicians must not stand in front of and at the rear of the vehicle.
  • Do not carry out this test while the battery is being charged.
  • Close the hood securely.
  • Do not touch the components other than the hydraulic pressure port.
Lift the vehicle. Then turn on the power supply mode of the electric motor switch to illuminate the ready indicator.
3.Measure the hydraulic pressure at each measuring point in the conditions specified in the standard hydraulic pressure table, and check that the measurements are within the standard value.
note If the hydraulic pressure is high with the vehicle stationary, the measured value may be incorrect. Repeat the measurement.
4.If not within the standard value, replace the valve body assembly.

Standard hydraulic pressure table
Measuring conditions

Standard value (MPa)

Speed (km/h)
Line pressure
Control pressure
When the vehicle is stationary
0
0
0
During driving at low or middle speed
(EV drive mode or Series hybrid mode)
55 to 65
0.8 to 1.0
0
During driving at high speed*
(Parallel hybrid mode)
80 to 90
0.8 to 1.0
0.8 to 1.0

note *:

  • If the drive mode is switched into the parallel hybrid mode, angled arrow symbol (A) will be displayed between "engine" and "tyre" symbols on the multi-information display.
  • If oil pressure pulsation occurs, obtain middle value.
  • The hydraulic pressure should be tested when the drive mode is at a parallel hybrid run check mode.

PARALLEL HYBRID RUN CHECK MODE


To activate/deactivate the parallel hybrid run check mode, follow one of the procedures below:

<To activate with the M.U.T.-III>

  • Activate item No.1 "Parallel hybrid run check mode" on the special function menu for the PHEV-ECU.

<To deactivate with the M.U.T.-III>

  • Deactivate item No.1 "Parallel hybrid run check mode" on the special function menu for the PHEV-ECU.
  • Turn the power supply mode of the electric motor switch to OFF.
  • After the drive mode is switched to the parallel hybrid mode once, stop the vehicle (vehicle speed: 0 km/h).

<Without the M.U.T.-III>
1.Turn the power supply mode of the electric motor switch to ON.
2.Pull the parking brake lever.
3.Press the 4WD lock switch at least 10 times within seven seconds.
4.Release the parking brake lever.

<To deactivate without the M.U.T.-III>

  • Turn the power supply mode of the electric motor switch to OFF.
  • After the drive mode is switched to the parallel hybrid mode once, stop the vehicle (vehicle speed: 0 km/h).