EVAP Leak Detection Pump Check

Reference: EVAP LEAK CHECK MODULE REMOVAL AND INSTALLATION 

1. Check EVAP leak detection pump in EVAP leak check module as follows.
   1. Connect spherical pneumatic plastic bag (1) with approximately 12.5 cm (4.92 in.) diameter (volume of a sphere: 1L) to EVAP leak check module using a rubber band (2) as shown in figure.
   2. Operate EVAP canister vent valve and EVAP leak detection pump by connecting 12 V-battery to EVAP leak check module terminals as shown in figure.
   3. Check that air in the pneumatic plastic bag is fully evacuated by EVAP leak detection pump within approximately 2 minutes.

      If check result is not as described above, replace EVAP leak check module.

      CAUTION: If the battery is connected to the wrong terminals of the EVAP leak check module, the EVAP canister vent valve and EVAP leak detection pump in the EVAP leak check module may be damaged. Be sure to connect the battery to the correct terminals of the EVAP leak check module.
      Fig 1: Checking EVAP Leak Check Module

      Courtesy of SUZUKI OF AMERICA CORP.