Evaporative Emission System Smoke Test
Evaporative Emission System Smoke 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.
- 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.
NOTE:
Smoke-producing fluid will degrade the performance of vehicle systems other than the evaporative emission system.
Use smoke-producing fluid only for testing the evaporative emission system.
NOTE:
- Vehicle battery must be fully charged for optimum tester performance.
- It is not recommended to use tester outdoors because wind and/or sunlight could make tester very difficult to read.
1) Connect red battery clip from tester to positive battery terminal, and then connect the black battery clip from tester to chassis ground.
NOTE:
Unwind nitrogen/smoke hose completely from bracket to optimize tester's performance.
2) Connect nitrogen/smoke hose (1) to fuel cap adapter (2).
3) Remove fuel cap, and then install fuel cap adapter onto fuel filler neck.
4) Install fuel filler cap onto fuel cap adapter.
NOTE:
Connections must be tight and leak-free.
5) Push engine switch to change ignition mode of keyless push start system to "ON" without depressing brake pedal (CVT model) or clutch pedal (M/T model).
6) Close the EVAP canister vent valve in EVAP leak check module as follows. If SUZUKI scan tool is available, perform Step a). If not, perform Step b).
The evaporative emission system should be sealed and ready to be tested.
a) Method using SUZUKI scan tool:
i) Push engine switch to change ignition mode of keyless push start system to "OFF".
ii) Connect SUZUKI scan tool to DLC (1).
iii) Push engine switch to change ignition mode of keyless push start system to "ON" without depressing brake pedal (CVT model) or clutch pedal (M/T model).
iv) Select "Active Test" mode on SUZUKI scan tool.
v) Close EVAP canister vent valve in EVAP leak check module by using SUZUKI scan tool.
Special Tool
(A): SUZUKI scan tool (SUZUKI-SDT)
b) Method without using SUZUKI scan tool:
i) Push engine switch to change ignition mode of keyless push start system to "OFF".
ii) Connect special tool between ECM and ECM connector. For connecting procedure, refer to Step 1) and 2) of "Voltage Check" under Pinout Values and Diagnostic Parameters Inspection of ECM and Its Circuits.
iii) Push engine switch to change ignition mode of keyless push start system to "ON" without depressing brake pedal (CVT model) or clutch pedal (M/T model).
iv) Using service wire, ground "E01-59" terminal (1) of ECM connector (valve: close).
7) Turn NITROGEN/SMOKE valve (1) on control panel to SMOKE position.
8) Press and release remote switch to activate tester and inject smoke into EVAP system.
NOTE:
Remote switch operates push-ON, push-OFF manner.
9) Disconnect EVAP canister purge hose (1) from EVAP canister purge valve (2) and check that smoke comes out of it in order to verify that EVAP system is filled with smoke.
NOTE:
Inject smoke in less than two-minute cycles for optimum tester performance.
10) Press and release remote switch to deactivate tester.
11) Connect EVAP canister purge hose to EVAP canister purge valve.
12) Charge system with smoke for additional 60 seconds.
13) Continue smoke charging at 15 second intervals, if necessary.
NOTE:
For optimum visual smoke performance, deactivate the smoke flow and allow the system pressure to drop. Allowing the smoke to exit small holes at a low flow rate greatly enhances visibility.
14) Use halogen light (1) to inspect entire area along EVAP system path to look for any leak. Charge smoke system with at 15 second intervals, as needed, until leak source is identified. If any leak is not found, go to the next step. If any leak is found, skip steps 15) to 20) and go to step 18).
NOTE:
Using the ultraviolet light (2) and shield glasses (3) if available, the exact location of the leak can be identified. The Ultra Trace UVTM, which has been deposited at the exact location of the leak, fluoresces by shinning the ultraviolet light. Once the area of the leak is identified by the exiting smoke, this method is helpful when the leak is in an area that is not readily visible.
15) Operate EVAP canister vent valve in EVAP leak check module referring to step 6).
16) Disconnect suction pipe from air port (1) of EVAP leak check module. Service and Repair
17) Plug air port with rubber plug.
NOTE:
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.
18) Operate EVAP canister purge valve as follows. If you have SUZUKI scan tool, perform step a). If not, perform step b).
a) Method using SUZUKI scan tool:
i) Push engine switch to change ignition mode of keyless push start system to "OFF".
ii) Connect SUZUKI scan tool to DLC (1).
iii) Push engine switch to change ignition mode of keyless push start system to "ON" without depressing brake pedal (CVT model) or clutch pedal (M/T model).
iv) Select "Active Test" mode on SUZUKI scan tool.
v) Turn ON (EVAP purge valve: 100%) and OFF (EVAP purge valve: 0%) EVAP canister purge valve by using SUZUKI scan tool.
Special Tool
(A): SUZUKI scan tool (SUZUKI-SDT)
b) Method without using SUZUKI scan tool:
i) Push engine switch to change ignition mode of keyless push start system to "ON" without depressing brake pedal (CVT model) or clutch pedal (M/T model).
ii) Use service wire to ground "C01-7" terminal of ECM connector (valve: ON [b]), and then pull the terminal out (valve: OFF [a]).
19) Disconnect hose form outlet nozzle of EVAP canister purge valve.
20) Check EVAP canister purge valve (1) for any leak when valve is switched ON and OFF by using SUZUKI scan tool or service wire. If check results are not as described below, replace EVAP canister purge valve.
EVAP canister purge valve specification
[A] Valve OFF: Smoke should not come out of EVAP canister purge valve.
[B] Valve ON: Smoke should come out of EVAP canister purge valve.
21) Repair leak.
22) Perform pressurization test again referring to Evaporative Emission System Leak Inspection Evaporative Emission System Leak Inspection
and check whether leak is completely repaired.
23) Charge battery if necessary.
NOTE:
After tester has been used in SMOKE mode, smoke may condense inside nitrogen/smoke hose, turning into an oil.
Over time, this buildup of oil could degrade performance of tester. Perform the following procedure any time the tester has been used in SMOKE mode and will not be used soon.
a) Close valve on nitrogen tank.
b) Disconnect nitrogen/smoke hose from vehicle.
c) Turn NITROGEN/SMOKE valve to NITROGEN position.
d) Press and release remote switch to activate tester, and then purge any residual smoke from nitrogen/smoke hose.