Suzuki 2000 Grand Vitara SQ416, Service Manual

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YH4
GRAND
VITARA
ENGINE AND EMISSION CONTROL SYSTEM (G16 / J20 ENGINES) 6E1-23
1. Plunger
IDLE AIR CONTROL VALVE (IAC VALVE)
Inspection
1) Disconnect connector from IAC valve.
2) Check each coil of IAC valve for resistance.
Terminals Resistance
Between “1” and “2”
“3” and “2”
“4” and “5”
“6” and “5”
35 – 43
If resistances is out of specification, replace.
3) Remove air cleaner outlet hose and remove IAC valve from
throttle body.
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 after cranking engine for
2 seconds.
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.
Removal
1) Disconnect negative cable from battery.
2) Disconnect connector from IAC valve.
3) Remove IAC valve from throttle body.
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
(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.