Rear Brake Pad, Brake Caliper & Brake Rotor: Inspection

INSPECT BRAKE CYLINDER AND PISTON
1. Inspect the cylinder bore and the brake piston for rust or scoring.
INSPECT PAD LINING THICKNESS
1. Using a ruler, measure the pad lining thickness.
  
  Fig 1: Measuring Pad Lining Thickness
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard thickness: 10.0 mm (0.394 in.)
  
  Minimum thickness: 1.0 mm (0.039 in.)
INSPECT DISC THICKNESS
1. Using a micrometer, measure the disc thickness.
  
  Fig 2: Measuring Disc Thickness
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard thickness: 10.0 mm (0.394 in.)
  
  Minimum thickness: 8.5 mm (0.335 in.)