Not Using Suzuki Scan Tool

1) Disconnect vacuum hose from tank pressure control solenoid vacuum valve.
2) Start engine and run it at idle speed.
3) With finger placed against disconnected vacuum hose, check that vacuum it applied.
If it is not applied, clean vacuum passage by blowing compressed air or replace vacuum hose.





4) Disconnect terminal E33-7 from ECM coupler with ignition switch OFF.
4-1) Turn ON ignition switch.
In this state, blow hose "A".
Air should come out of filter and not out of hose "B".





4-2) By using service wire, connect E33-7 terminal of ECM coupler and body ground with ignition switch OFF.
4-3) Turn ON ignition switch.
In this state, blow hose "A".
Air should come out of hose "B" and not out of filter. If check results are as describe above and E33-7 terminal and ECM connection is OK, tank pressure control solenoid vacuum valve and its circuit are in good condition, connect vacuum hoses securely.
If not, proceed to step 5).
5) With ignition switch OFF, disconnect coupler from valve.





6) Check resistance between two terminals of tank pressure control solenoid vacuum valve.

Resistance of tank pressure
control solenoid vacuum valve: 28 - 36 Ohms at 20°C (68°F)

If resistance is as specified, proceed to next operation.
If not, replace.





7) With coupler disconnected, blow into nozzle "A". Air should come out of filter and not out of nozzle "B". If not, replace tank pressure control solenoid vacuum valve.





8) Connect 12V-battery to tank pressure control solenoid vacuum valve terminals.
In this state, blow into nozzle "A".
Air should come out of nozzle "B" and not out of filter. If check result is as specified above, check tank pressure control solenoid vacuum valve harness.
If not, replace tank pressure control solenoid vacuum valve.
9) Connect vacuum hoses.
10) Connect tank pressure control solenoid vacuum valve coupler securely.