Suzuki 2000 Grand Vitara SQ416, Service Manual

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YH4
GRAND
VITARA
6E2-44 ENGINE AND EMISSION CONTROL SYSTEM (H25 ENGINE)
1
2
1. Tech 1 display
2. EGR valve opening (0: Close, 100: Full open)
EMISSION CONTROL SYSTEM
EGR SYSTEM (IF EQUIPPED)
System Inspection [Using SUZUKI scan tool (Tech 1)]
1) Connect Tech 1 to data link connector (DLC) with ignition switch
OFF.
Special tool
(A): SUZUKI scan tool, Tech 1
(B): Mass storage cartridge
(C): 16 / 14 pin DLC cable
NOTE:
For operation procedure of cartridge, refer to its cartridge
operator’s manual.
2) Start engine and warm up it to normal operating temperature.
3) With engine idling (without depressing accelerator pedal), open
EGR valve by using “MISC. TEST” mode.
In this state, according as EGR valve opening increases engine
idle speed drops. If not, possible cause is clogged EGR gas pas-
sage, stuck or faulty EGR valve.
Removal
1) Disconnect negative cable at battery.
2) Disconnect EGR valve coupler.
3) Remove EGR valve (1) and gasket from intake collector.