Initial Inspection and Diagnostic Overview

1. Verify the customer's concerns by operating the steering system to duplicate the condition.
2. Inspect to determine if any of the following mechanical or electrical concerns apply:

Mechanical
^ Tire pressure, loose wheels.
^ Loose tie rod ends, inner ball joints.
^ Loose suspension struts or ball joints.
^ Loose universal joints.
^ Loose connecting bolts on column intermediate shaft.
^ Loose steering gear assembly.
^ Improper drive belt tension.
^ Binding or misaligned steering column.
^ Power steering pump, fluid level, hose leak or line restrictions.

Electrical
^ Open fuses, U (30A), 7 (15A).
^ Circuitry, connections-open, grounding or shorting.
^ Steering wheel rotation sensor.
^ Vehicle speed sensor.
^ Power steering pump actuator valve.
^ EVO control module-controlled.
^ Computer controlled air suspension.

3. If inspection reveals obvious concern(s) that can be readily identified, service as required.
4. If the concern(s) remain after the inspection, perform the EVO Steering Diagnosis procedure (vehicles without computer controlled suspension) using the Super Star II. Reading and Clearing Diagnostic Trouble Codes
Retrieve Diagnostic Trouble Codes (DTCs) and go to the Symptom Chart. Symptom Related Diagnostic Procedures