Sienna FWD V6-3.3L (3MZ-FE) (2006)
NOTICE:
^
Do not keep the valve closed for more than 10 seconds.
^
Do not let the fluid temperature become too high.
g. With the engine idling, open the valve fully.
h. Measure the fluid pressure at engine speeds of 1,000 rpm and 3,000 rpm.
Fluid pressure difference: 490 kPa (5 kg/cm2, 71 psi) or less
NOTICE: Do not turn the steering wheel.
If necessary, replace the vane pump assembly.
i.
With the engine idling and valve fully opened, turn the steering wheel to full lock position.
Fluid pressure: 2 7,800 to 8,300 kPa (80 to 85 kg-cm, 1,138 to 1,209 psi)
NOTICE:
^
Do not maintain lock position for more than 10 seconds.
^
Do not let the fluid temperature become too high.
j.
Disconnect the SST
k. Connect the pressure feed tube assembly to the rack & pinion power steering gear assembly.
l.
Bleed the power steering system.
4. CHECK STEERING EFFORT
a. Center the steering wheel assembly.
b. Remove the horn button assembly.
c. Start the engine and run it at idle.
d. Using a torque wrench, measure the steering effort in both directions.
Torque: Steering effort (Reference) 6.0 Nm (60 kg-cm, 53 inch lbs.) or less
HINT: Take the tire type, pressure and contact surface into consideration before making your diagnosis.