Visual Inspection

NOTE: Start diagnosis by performing VISUAL INSPECTION.

Verify the customer's concern by operating the steering system while driving to duplicate the condition.
Inspect to determine if any of the following mechanical or electrical concerns apply:
- Tire pressure, loose wheels
- Loose tie rod ends, inner ball joints
- Loose suspension struts or ball joints
- Loose universal joints
- Loose connecting bolts on the 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
- Open fuses in the fuse junction panel, fuse 28 (10A), power distribution box fuse 4 (15A)
- Circuitry and connections
- Steering wheel rotation sensor
- Vehicle speed sensor
- Power steering pump actuator valve
- Air suspension/electronic variable orifice (EVO) control module
- Air suspension/steering test connector
If inspection reveals obvious concern(s) that can be readily identified, repair as required.
If the concern remains after the inspection, use New Generation Star (NGS) Tester to retrieve diagnostic trouble codes (DTCs). See SELF-DIAGNOSTICS .