Initial Inspection and Diagnostic Overview
INSPECTION AND VERIFICATIONCAUTION: Do not hold the steering wheel at the stops for an extended amount of time. Damage to the power steering pump will result.
NOTE: Make the following preliminary checks before repairing the steering system:
1. Inspect Tires
^ Check tire pressure. Correct tire pressure is 216 kPa (32 psi).
^ Verify that all tires are sized to specification.
2. Check belt and tensioner. See Engine.
3. Fluid Level Check.
^ Verify that the power steering fluid level is at the full (F) mark. Add Mercon(R) ATF (power steering fluid) or equivalent.
4. Air Bleeding
^ Verify that there is no air in the power steering system. Run the engine until it reaches normal operating temperature. Turn the steering wheel to the left and right several times without hitting the stops. If any air bubbles are present, bleed the air from the system. Service and Repair
5. External Leak Check
^ With the ignition switch at OFF, wipe off power steering pump, power steering pressure hose, power steering return hose, and steering gear.
^ With the engine running, turn the steering wheel from stop to stop several times. Do not hold steering wheel at stops. Check for leaks. Repair as necessary if leaks are observed.
6. Verify the customer concern by operating the steering system.
7. Visually inspect for obvious signs of mechanical and electrical damage; refer to the following list:
Mechanical
^ Tire pressure.
^ Drive belt.
^ Wheel/tire size.
^ Kinked/cracked hoses.
^ Fluid leaks.
Electrical
^ Power steering pressure (PSP) switch.
^ Circuitry.
8. If an obvious cause for an observed or reported malfunction is found, correct the cause (if possible) before proceeding to the next step.
9. If the fault is not visually evident, determine the symptom and proceed to diagnosis by symptom. Symptom Related Diagnostic Procedures