Toyota Corolla 2004 Repair Manual - POWER STEERING SYSTEM
ON–VEHICLE INSPECTION
F40449
Normal
Abnormal
51–3
–POWER STEERING POWER STEERING SYSTEM
5105M–02
1. INSPECT DRIVE BELT
(a) Visually check the 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 considered acceptable. If the
missing chunks from the ribs are found on the belt, it should be
replaced.
2. BLEED POWER STEERING SYSTEM
(a) Check the fluid level.
(b) Jack up the front of the vehicle and support it with the
stands.
(c) Turn the steering wheel.
(1) With the engine stopped, turn the 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 wheel to left or right
full lock position and keep it there for 2 – 3 seconds,
then turn the wheel to the opposite full lock position
and keep it there for 2 – 3 seconds.
(2) Repeat (1) several times.
(g) Stop the engine.
(h) Check for foaming or emulsification.
Especially, if the system has to be bled twice because of foaming or emulsification, check for fluid leaks in the system.
(i) Check the fluid level.
2004 COROLLA (RM1037U)
F40897
F40898
3. CHECK FLUID LEVEL
(a) Keep the vehicle level.
(b) With the engine stopped, check the fluid level in the oil
reservoir.
If necessary, add fluid.
Fluid: ATF DEXRON® II or III
HINT:
Check that the fluid level is within the HOT LEVEL range on the
reservoir tank. If the fluid is cold, check that it is within the COLD
LEVEL range.
1538Author: Date:
51–4
–POWER STEERING POWER STEERING SYSTEM
(c) Start the engine and run it at idle.
(d) Turn the steering wheel from lock to lock several times to
raise fluid temperature.
Fluid temperature: 75 – 80°C (167 – 176°F)
Normal
5 mm (0.20 in.)
or less
Engine Idling Engine Stopped
Abnormal
F40897
R11786
(e) Check for foaming or emulsification.
If foaming or emulsification is identified, bleed the power steering system.
(f) With the engine idling, measure the fluid level in the oil
reservoir.
(g) Stop the engine.
(h) Wait a few minutes and measure the fluid level in the oil
reservoir again.
Maximum fluid level rise: 5 mm (0.20 in.)
If a problem is found, bleed the power steering system.
(i) Check the fluid level.
4. CHECK STEERING FLUID PRESSURE
(a) Disconnect the pressure feed tube from the PS gear (See
page 51–18).
(b) Connect SST, as shown in the illustration.
SST 09640–10010 (09641–01010, 09641–01020,
09641–01030)
NOTICE:
Check that the valve of the SST is in the open position.
(c) Bleed the power steering system.
(d) Start the engine and run it at idle.
(e) Turn the steering wheel from lock to lock several times to
raise fluid temperature.
Fluid temperature: 75 – 80 °C (167 – 176 °F)
2004 COROLLA (RM1037U)
1539Author: Date:
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