Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

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ENGINE AND EMISSION CONTROL SYSTEM (G16/J20 ENGINES) 6E1-31
INSTALLATION
1) Install new O-ring to throttle body.
2) Install IAC valve to throttle body.
Tighten IAC valve screws to specified torque.
Tightening torque
IAC valve screw
(a) : 3.5 N·m (0.35 kg-m, 2.5 lb-ft)
3) Connect IAC valve connector securely.
4) Connect negative cable to battery.
Fuel Delivery System
Fuel pressure inspection
1) Relieve fuel pressure in fuel feed line referring to “Fuel Pres-
sure Relief Procedure” in Section 6.
2) Using backup wrench, loosen plug bolt on fuel delivery pipe
and remove it. Connect special tools (fuel pressure gauge) to
delivery pipe.
Special tool
(A) : 09912-58441
(B) : 09912-58431
(C) : 09919-46010
3) Check that battery voltage is above 11 V.
4) Turn ignition switch ON to operate fuel pump and after 3 sec-
onds turn it OFF. Repeat this 3 or 4 times and then check
fuel pressure.
5) Start engine.
6) Measure fuel pressure at idling.
If measured pressure doesn’t satisfy specification, refer to
“Diagnostic Flow Table B-3” in Section 6 and check each
possibly defective part. Replace if found defective.
CAUTION:
A small amount of fuel may be released when plug bolt is
loosened. Place container under the bolt or cover bolt
hole with a shop cloth so that released fuel is caught in
container or absorbed in cloth. Place that cloth in an
approved container.