Hydraulic Pressure Test
NOTE:
Prior to this test, check that the fuel level warning does not flash and the Main Drive Lithium-ion Battery is charged enough. If the fuel level warning flashes, refill the fuel tank. If the Main Drive Lithium-ion Battery is partially discharged, recharge the battery.
- Install the following special tools at the hydraulic pressure outlet ports shown in the illustration.
- Oil pressure gauge <3.0 MPa (435 psi)> (MD998330)
- Joint (MD998332)
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.
- 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.
- If not within the standard value, replace the valve body assembly.STANDARD HYDRAULIC PRESSURE SPECIFICATION
Measuring conditions Standard value MPa (psi) Speed (km/h) Line pressure Control pressure When the vehicle is stationary 0 0 (0) 0 (0) During driving at low or middle speed (EV drive mode or Series hybrid mode) 55 to 65 0.8 - 1.0 (117 - 145) 0 (0) During driving at high speed(1) (Parallel hybrid mode) 80 to 90 0.8 - 1.0 (117 - 145) 0.8 - 1.0 (117 - 145) NOTE:(1) - If the drive mode is switched into the parallel hybrid mode, angled arrow symbol (A) will be displayed between "engine" and "tire" 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.