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Check Steering Fluid Pressure

WARNING: This page is about a different car, the 2002 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
  1. 5VZ-FE engine:

    Remove the air cleaner assembly. See step  1 under POWER STEERING VANE PUMP (5VZ-FE) REMOVAL.

  2. 2UZ-FE engine:

    Remove the air cleaner assembly with air cleaner hose. See step  1 under POWER STEERING VANE PUMP REMOVAL (2UZ-FE).

  3. Disconnect the pressure feed tube from the PS vane pump.
    • 5VZ-FE engine: See  4 under POWER STEERING VANE PUMP (5VZ-FE) REMOVAL.
    • 2UZ-FE engine: See  5 under POWER STEERING VANE PUMP REMOVAL (2UZ-FE).
    4. CAUTION: Check that the valve of the SST is in the open position.
    Fig 1: Connecting SST To Power Steering System
    G01095218Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Connect SST, as shown in Fig 1.

    SST 09640-10010 (09641-01010, 09641-01030,09641-01060)

  5. Bleed the power steering system. See BLEEDING POWER STEERING FLUID .
  6. Start the engine and run it at idle.
  7. Turn the steering wheel from lock to lock several times to boost fluid temperature.

    Fluid temperature: 80 °C (176 °F)  .

    8. CAUTION:
    • Do not keep the valve closed for more than 10 seconds.
    • Do not let the fluid temperature become too high.
    Fig 2: Diagramming Power Steering Fluid Pressure Test With Valve Closed
    G01095219Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. With the engine idling, close the valve of the SST and observe the reading on the SST.

    Minimum fluid pressure: 8,336 kPa (85 kgf/cm 2  , 1,209 psi). 

  9. With the engine idling, open the valve fully.
    10. CAUTION: Do not turn the steering wheel.
    Fig 3: Diagramming Power Steering Fluid Pressure Test With Valve Open - Wheels Centered
    G01095220Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. Measure the fluid pressure at engine speeds of 1,000 RPM and 3,000 RPM.

    Difference fluid pressure: 490 kPa (5 kgf/cm 2  , 71 psi) or less 

    11. CAUTION:
    • Do not maintain lock position for more than 10 seconds.
    • Do not let the fluid temperature become too high.
    Fig 4: Diagramming Power Steering Fluid Pressure Test With Valve Open - Wheels At Full Lock Position
    G01095221Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. With the engine idling and valve fully opened, turn the steering wheel to full lock.

    Minimum fluid pressure: 8,336 kPa (85 kgf/cm 2  ,1,209 psi) 

  12. Disconnect the SST. SST 09640-10010 (09641-01010, 09641-01030,09641-01060).
  13. Connect the pressure feed tube.
    • 5VZ-FE engine. See step  3 under POWER STEERING VANE PUMP INSTALLATION (5VZ-FE).
    • 2UZ-FE engine. See step  2 under POWER STEERING VANE PUMP INSTALLATION (2UZ-FE).
  14. 5VZ-FE engine:

    Install the air cleaner assembly. See  6 under POWER STEERING VANE PUMP INSTALLATION (5VZ-FE).

  15. 2UZ-FE engine:

    Install the air cleaner assembly with air cleaner hose. See  6 under POWER STEERING VANE PUMP INSTALLATION (2UZ-FE).

  16. Bleed the power steering system. See BLEEDING POWER STEERING FLUID .
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