INSPECTION PROCEDURE 4: Shrill Noise: Diagnosis

STEP 1. Check for entry of air.
Q: Is the power steering fluid foamy?
- YES: Bleed the air (Refer to POWER STEERING SYSTEM AIR BLEEDING ). Then go to Step 3.
- NO: Go to Step 2.
STEP 2. Check for seizure in the oil pump.
Q: Is there seizure?
- YES: Replace the part (Refer to POWER STEERING OIL PUMP ASSEMBLY ). Then go to Step 3.
- NO: Go to Step 3.
STEP 3. Retest the system.
Confirm that no noise is generated.

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