Throttle Valve Operation Check

Remove air cleaner outlet hose with ignition mode of keyless push start system in "OFF", see AIR CLEANER COMPONENTS .
Disconnect connector from electric throttle body assembly.
Check throttle valve operation as follows.
If faulty condition is found, replace throttle body, see THROTTLE BODY ASSEMBLY REMOVAL AND INSTALLATION .
1. Check that throttle valve (1) moves smoothly from fully closed position and fully open position with finger.
  
  Fig 1: Checking Throttle Valve
  Courtesy of SUZUKI OF AMERICA CORP.
2. Check that throttle valve returns to default position.
  Throttle valve default position "a":
  
  7° from completely closed position (1)
  
  Fig 2: Identifying Throttle Valve Opening Angle
  Courtesy of SUZUKI OF AMERICA CORP.