Inspection Procedure 6
INSPECTION PROCEDURE 6: Hissing NoiseDIAGNOSIS
STEP 1. Check the fluid level.
1. Park the vehicle on a flat, level surface, and then start the engine.
2. Turn the steering wheel several times to raise the temperature of the fluid to approximately 50 - 60°C (122 - 140°F).
3. With the engine running, turn the wheel all the way to the left and right several times.
4. Check the fluid in the oil reservoir for foaming or milkiness. Check the difference of the fluid level when the engine is stopped, and while it is running.
Q: Is the check result OK?
YES: Go to Step 2.
NO: Bleed the air. And then go to Step 4.
STEP 2. Check each hose for crushing or twisting.
Q: Is any hose crushed or twisted?
YES: Repair or replace the hose. And then go to Step 4.
NO: Go to Step 3.
STEP 3. Check the steering gear for damage.
Q: Is there damage?
YES: Repair or replace the part. And then go to Step 4.
NO: Go to Step 4.
STEP 4. Retest the system.
Confirm that no noise is generated.
Q: Is there noise?
YES: Repeat from Step 1.
NO: The procedure is complete.