Pressurization Test

WARNING: If any gas other than nitrogen gas is used, the gasoline in the fuel system may ignite and explode. Be sure to use only nitrogen gas for this inspection.

NOTE: A large difference between the vehicle temperature and shop temperature will seriously affect the accuracy of the tests. Always allow enough time for the vehicle's temperature to adjust to the shop temperature.
If the pressure regulator is replaced, perform the calibration referring to "OUTPUT PRESSURE CALIBRATION " in this instructions.

Connect the red battery clip from the tester to the positive battery terminal, and then connect the black battery clip from the tester to chassis ground.
NOTE: The vehicle battery must be fully charged for optimum tester performance.
Turn the NITROGEN/SMOKE valve (1) on the front control panel to NITROGEN.
NOTE: Unwind the nitrogen/smoke hose completely from the bracket to optimize the tester's performance.
Connect the nitrogen/smoke hose (2) to 0.020 in. (0.5 mm) test orifice (3) on the bottom-front of the tester.
Press and release the remote switch (4) to activate the tester.

Fig 1: Connecting Nitrogen/Smoke Hose To Bottom-Front Of Tester
Courtesy of SUZUKI OF AMERICA CORP.
Position the red flag (1) on the flowmeter to align with the floating indicator (2). When the red flag is set, press and release the remote switch to deactivate the tester.

Fig 2: Identifying Red Flag And Floating Indicator
Courtesy of SUZUKI OF AMERICA CORP.
Disconnect the nitrogen/smoke hose from the test orifice.
Connect the nitrogen/smoke hose onto the fuel cap adapter (1).
Remove fuel cap, and then install fuel cap adapter onto the fuel filler neck.
Install fuel cap (2) onto the fuel cap adapter.
NOTE: Connections must be tight and leak-free.

Fig 3: Identifying Fuel Cap Adapter And Fuel Cap
Courtesy of SUZUKI OF AMERICA CORP.
Turn the ignition switch ON leaving the engine OFF.
WARNING: There is a risk of personal injury and damage to the tester if the evaporative emission system tester is used while the engine is running. Make sure the engine is off before performing the test.
Using the scan tool, close the canister vent valve referring to Step 6) of EVAP LEAK CHECK SYSTEM SMOKE TEST .
Disconnect pipe from the outlet nozzle (1) of EVAP leak check module.
Plug outlet nozzle with finger or the rubber plug.
The evaporative emission system should now be sealed and ready to be tested.

Fig 4: Identifying Outlet Nozzle Of EVAP
Courtesy of SUZUKI OF AMERICA CORP.

CAUTION: Be sure to block the ventilation nozzle of the EVAP leak check module securely when performing the test. If the ventilation nozzle of the EVAP leak check module is not blocked securely, the module is open to the atmosphere through the leak detection pump even with the EVAP canister vent valve and the EVAP canister purge valve both closed. Nitrogen gas will then leak through the nozzle, giving a false indication of leakage.
Press and release the remote switch to activate the nitrogen flow and fill the system. Watch the flowmeter's indicator until it stabilizes.
NOTE:
- The remote switch operates in a push ON, push OFF manner.
- Larger volume fuel tanks and/or those with lower fuel levels may require several minutes to fill with nitrogen.
Compare the stable floating indicator position to the red flag as follows.
1. If indicator floats above the red flag, the result is UNACCEPTABLE. Locate and repair a leak referring to EVAP LEAK CHECK SYSTEM SMOKE TEST .
2. If indicator floats below the red flag, the result is ACCEPTABLE. Test is completed.
  
  Fig 5: Identifying Floating Indicator Position
  Courtesy of SUZUKI OF AMERICA CORP.
Press and release the remote switch to deactivate the tester.
Charge the battery as necessary.