Step 4

EVAP Canister Air Valve and Its Circuit Check.






1) Disconnect air valve hose from EVAP canister.
2) With ignition switch ON, blow into hose "A". Air should come out of hose "B".

Using SUZUKI scan tool






3) Connect SUZUKI scan tool to DLC with ignition switch OFF.
3a) Turn ON EVAP canister air valve by using SUZUKI scan tool with ignition switch ON.
In this state, blow hose "A".
Air should not come out of hose "B".

WARNING: Do not suck the air through valve. Fuel vapor inside valve is harmful.

If check results are as described above, EVAP canister air valve and its circuit are in good condition, connect vacuum hoses securely.
If not, proceed to step 4).

Not using SUZUKI scan tool






3) Using service wire, connect E173-16 terminal of ECM coupler and body ground with ignition switch OFF
3a) Turn ON ignition switch.
In this state, blow hose "A".
Air should not come out of hose "B".

WARNING: Do not suck the air through valve. Fuel vapor inside valve is harmful.

If check results are as described above and E173-16 terminal to ECM connection is OK, EVAP canister air valve and its circuit are in good condition, connect vacuum hoses securely.
If not, proceed to step 4).
4) With ignition switch OFF, disconnect coupler from EVAP canister air valve.






5) Check resistance between two terminals of EVAP canister air valve.
Resistance of EVAP canister air valve: 25-30ohms at 20 °C (68 °F)
If resistance is as specified, proceed to step 6). If not, replace.






6) With coupler disconnected, blow into hose "A". Air should come out of hose "B".
If not, replace EVAP canister air valve.

WARNING: Do not suck the air through valve. Fuel vapor inside valve is harmful.






7) Connect 12V-battery to EVAP canister air valve terminals. In this state, blow hose "A". Air should not come out of hose "B".

WARNING: Do not suck the air through valve. Fuel vapor inside valve is harmful.

If check result is specified above, check EVAP canister air valve harness and connectors.
If not, replace EVAP canister air valve.
8) Connect hose to EVAP canister.
9) Connect EVAP canister air valve coupler securely.