Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

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ENGINE AND EMISSION CONTROL SYSTEM (H25 ENGINE) 6E2-25
Idle air control valve (IAC valve)
REMOVAL
1) Disconnect battery negative cable at battery.
2) Disconnect IAC valve connector.
3) Remove IAC valve (1) from intake collector (2).
ON-VEHICLE INSPECTION
1) Disconnect connector from IAC valve (1).
2) Check each coil of IAC valve for resistance.
If resistances is out of specification, replace.
IAC valve resistance
3) Remove IAC valve from intake collector.
4) Connect connector to IAC valve.
5) Check that plunger of IAC valve moves once and then stops
as soon as ignition switch is turned OFF.
If plunger of IAC valve does not operate at all, check wire
harnesses for open and short. If wire harnesses are in good
condition, replace IAC valve and recheck.
Terminals Resistance
Between “a” and “b”
“b” and “c”
“d” and “e”
“e” and “f”
20 – 24
Ω
at 20°C, 68°F
NOTE:
This check should be performed by two people, one per-
son operates ignition switch while the other checks
plunger operation.