Inspection Procedure 9: Vibration

INSPECTION PROCEDURE 9: Vibration

NOTE: A slight vibration may be felt when the stationary steering effort is made due to the condition of the road surface. To check whether the vibration actually exists or not, test-drive the vehicle on a dry concrete or asphalt surface. A very slight amount of vibration is not a malfunction.

DIAGNOSIS

STEP 1. Check the tires for out-of-balance.

Q: Is the check result OK?
YES: Go to Step 2.
NO: Balance the tires. Then go to Step 4.

STEP 2. 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. If the fluid contains air or has milky appearance, or the fluid level fluctuate by 5 mm (0.2 inch) or more, power steering system air bleeding should be done.

Q: Is the check result OK?
YES: Go to Step 3.
NO: Bleed the air. Then go to Step 4.

STEP 3. Check the steering gear for damage.

Q: Is there damage?
YES: Repair or replace the part. Then go to Step 4.
NO: Go to Step 4.

STEP 4. Retest the system.
Confirm that there is no steering wheel vibration.

Q: Is there vibration?
YES: Repeat from Step 1.
NO: The procedure is complete.