Vacuum Passage Inspection - Suzuki SX4 Service Manual

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1B-2 Aux. Emission Control Devices:
1) Prepare to operate EVAP canister purge valve as
follows.
a) When using SUZUKI scan tool:
i)
Connect SUZUKI scan tool to DLC (1) with
ignition switch turned OFF and disconnect
purge valve vacuum hoses from intake
manifold and EVAP canister.
ii) Turn ON ignition switch, clear DTC and
select "Engine / Active Test" mode on
SUZUKI scan tool.
Special tool
(A): SUZUKI scan tool (SUZUKI-SDT)
1
(A)
b) When not using SUZUKI scan tool:
NOTE
Before performed this check, be sure to read
the "Precautions of ECM Circuit Inspection in
Section 1A".
i)
Disconnect purge valve vacuum hoses from
intake manifold and purge pipe.
ii) Remove ECM from its bracket referring to
"Engine Control Module (ECM) Removal and
Installation in Section 1C".
iii) Connect special tool between ECM and ECM
connector referring to "Inspection of ECM
and Its Circuits in Section 1A".
iv) Turn ON ignition switch.
Using service wire, ground "C01-29" terminal
circuit of special tool (valve ON: "B") and
unground it (valve OFF: "A").
"C01-29"
I5RW0C110011-01
"A"
"B"
I6RW0D120001-01
2) Check purge valve for operation and vacuum
passage for clog when valve is switched ON and
OFF by using SUZUKI scan tool or service wire.
If check result is not satisfactory, check vacuum
hoses, EVAP canister purge valve, wire harness and
connections.
EVAP canister purge valve specification
[A] Valve OFF: When vacuum (–60 kPa (–8.7 psi))
is applied to hose (1), vacuum can be applied.
[B] Valve ON: When vacuum is applied to hose
(1), vacuum can not be applied.
Special tool
(A): 09917–47011
[A]
(A)
1

Vacuum Passage Inspection

Start engine and run it at idle speed. Disconnect vacuum
hose (1) from EVAP canister purge valve (2). With finger
placed against disconnected hose, check that vacuum is
applied.
If it is not applied, clean vacuum passage by blowing
compressed air.
[B]
(A)
1
I5RW0A120008-01
S7RW0A1206003
2
1
I5RW0A120003-01

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