WARNING: This page is about a different car, the 2004 Suzuki Aerio, 2003 Suzuki Aerio, and 2002 Suzuki Aerio. However, it is still accessible from the selected car via links, so may be relevant.
Inspect for cracks, deformation or damage.
If defective, replace.
Fig 1: Checking Suspension Control Arm / Steering Knuckle