EVAP Canister Purge System Inspection

EVAP Canister Purge System Inspection

WARNING:

If vacuum is applied using your mouth, there is a risk of inhaling harmful fuel vapor.

Be sure to use a hand vacuum pump to apply vacuum.

NOTE:

If too high a vacuum is applied, the EVAP canister purge valve may be damaged. Do not exceed a vacuum of -86 kPa (-12.47 psi).

1) Prepare to operate EVAP canister purge valve as follows.
- Method using SUZUKI scan tool:
a Connect SUZUKI scan tool to DLC (1) with ignition switch turned to OFF.
Special Tool

(A): SUZUKI scan tool (SUZUKI-SDT)





b Turn ignition switch to ON, clear DTC(s) and select "Engine / Active Test" mode on SUZUKI scan tool.

NOTE:
EVAP canister purge valve is operated using scan tool as follows.
- To turn OFF EVAP canister purge valve: 0%
- To turn ON EVAP canister purge valve: 100%

- Method using service wire:

NOTE:
Before performing this check, be sure to read Precautions for ECM Circuit Inspection Precautions for ECM Circuit Inspection.

a Connect special tool (ECM check harness) between ECM and ECM connector. Pinout Values and Diagnostic Parameters

NOTE:
Operate EVAP canister purge valve using service wire as follows.
- To turn ON EVAP canister purge valve:
Connect service wire to "C37-7" terminal and vehicle body ground [b]
- To turn OFF EVAP canister purge valve:
Disconnect service wire to "C37-7" terminal and vehicle body ground [a]





2) Disconnect vacuum hose (2) from intake manifold and purge hose from EVAP canister purge valve (1).
3) Install special tool to vacuum hose.
Special Tool

(A): 09917-47011

4) Check EVAP canister purge valve operation.

If faulty condition is found, check the following.
- Wire harness and connections
- EVAP canister purge valve: Testing and Inspection
- Vacuum hoses
a Check that vacuum of -60 kPa (-0.6 kgf/cm2, -8.7 psi, -0.6 bar) can be applied when EVAP canister purge valve is turned OFF [A].
b Check that no vacuum can be applied when EVAP canister purge valve is turned ON [B].