Vacuum Tank

Check for outside of vacuum tank visually
Disconnect vacuum hoses from intake manifold and vacuum solenoid valve.
Check for vacuum passage of vacuum tank as follows by using vacuum pump.
1. When applying vacuum to hose (1), vacuum is maintained (there is no leakage): [A]
2. When applying vacuum to hose (2), vacuum is not maintained: [B]
  If check result is not described, replace vacuum tank assembly.
Fig 1: Checking Vacuum Tank
Courtesy of SUZUKI OF AMERICA CORP.
Connect vacuum hoses to intake manifold and vacuum solenoid valve.