Suzuki 2000 Grand Vitara SQ416, Service Manual

Page: 631 / 729

YH4
GRAND
VITARA
ENGINE AND EMISSION CONTROL SYSTEM (H25 ENGINE) 6E2-43
1
2. Fuse box
3. Instrument panel
Left-hand steering vehicle
Right-hand steering vehicle
1
1
FUEL PUMP RELAY
Inspection
1) Disconnect negative cable at battery.
2) Remove fuel pump relay (1) from relay box.
3) Structure of fuel pump relay is the same as that of main relay.
Check its resistance and operation using the same procedure as
that for main relay.
If malfunction is found, replace.
FUEL CUT OPERATION
Inspection
NOTE:
Before inspection, check to make sure that gear shift lever is
in Neutral position (with A / T model, selector lever in “P”
range) and that parking brake lever is pulled all the way up.
1) Warm up engine to normal operating temperature.
2) While listening to sound of injector by using sound scope (1) or
such, increase engine speed to higher than 3,000 r / min.
3) Check to make sure that sound to indicate operation of injector
stops when throttle valve is closed instantly and it is heard again
when engine speed is reduced to less than about 2,000 r / min.