Suzuki 2000 Grand Vitara SQ416, Service Manual

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YH4
GRAND
VITARA
ENGINE AND EMISSION CONTROL SYSTEM (H25 ENGINE) 6E2-21
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.
Terminals Resistance
Between “a” and “b”
“b” and “c”
“d” and “e”
“e” and “f” 20 – 24
at 20
_
C, 68
_
F
If resistances is out of specification, replace.
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.
NOTE:
This check should be performed by two people, one person
operates ignition switch while the other checks plunger op-
eration.
If plunger of IAC valve does not operate at all, check wire har-
nesses for open and short. If wire harnesses are in good condi-
tion, replace IAC valve and recheck.