Toyota Sienna Service Manual: Power steering fluid
Bleeding
1. BLEED POWER STEERING SYSTEM
(a) Check the fluid level (See page PS-2).
(b) Jack up the front of the vehicle and support it with stands.
(c) Turn the steering wheel.
(1) With the engine stopped, turn the steering wheel slowly from lock to lock several times.
(d) Lower the vehicle.
(e) Start the engine.
(1) Run the engine at idle for a few minutes.
(f) Turn the steering wheel.
(1) With the engine idling, turn the steering wheel left or right to the full lock position and keep it in that position for 2 to 3 seconds, then turn the steering wheel to the opposite full lock position and keep it there for 2 to 3 seconds.
(2) Repeat this procedure several times.
(g) Stop the engine.
(h) Check for foaming or emulsification.
HINT: If the system has to be bled twice because of forming or emulsification, be sure to check for fluid leaks in the system.
(i) Check the fluid level (See page PS-2).
On-vehicle inspection
1. INSPECT DRIVE BELT
(a) Visually check the drive belt for excessive wear,
frayed cords, etc.
If any defect is found, replace the drive belt.
HINT:
Cracks on the rib side of a belt are con ...
Vane pump
COMPONENTS
...
Other materials:
On-vehicle inspection
1. CHECK VVT SENSOR OUTPUT VOLTAGE
Turn the ignition switch to the ON position.
Check the voltage between the specified terminal
and body ground.
Standard voltage
While turning the crankshaft pulley by hand,
measure the voltage between each terminal. Check
that the voltage ...
Problem symptoms table
HINT:
Before inspecting the suspected areas listed in the table
below, check the fuse and relay.
Before inspecting the suspected areas listed in the table
below, check for DTCs.
Methods used to verify the cause of the problem are listed
in order of probability in the ...
Taillight Relay Circuit
DESCRIPTION
The Multiplex network body ECU controls TAIL relay when signal is received
from headlight dimmer
switch assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER
Connect the intelligent tester to DLC3.
Turn the ignition switch ON and ...
