Tank Pressure Control Valve

Fuel tank pressure or vacuum is controlled by tank pressure control valve. When fuel tank pressure reaches a specified value, tank pressure control valve opens and allows fuel vapors to enter EVAP canister. When fuel tank pressure becomes negative and reaches a specified value, tank pressure control valve opens and allows outside air to flow into fuel tank.

Fig 1: Fuel EVAP System Components (EVAP-I - Sidekick & X-90)

Courtesy of SUZUKI OF AMERICA CORP.

Fig 2: Fuel EVAP System Components ((EVAP-II - Esteem, Sidekick & X-90)

Courtesy of SUZUKI OF AMERICA CORP.

Fig 3: Fuel EVAP System Components (Swift)