gio Vyper 4WD 1100cc 4 seater XY1100UEL, Service Manual

Page: 226 / 261

11. EFI SYSTEM OF SQR 472ENGINE
11-54
2.29. Three cylinder injector circuit for the power supply circuit (fault code P0268)
Serial
number Operation steps Test
results Next step
1 Connect the diagnosis instrument, the
ignition switch is in the "ON" Next step
Yes To step 4 2 Dial the joint stiffness of injector on wire
harness, using a multimeter to check the
connector SM1# pin voltage and power for a
few pieces of value is a 12V.
No Next step
Yes Repair or replace the wire harness 3 Check in between a cylinder injector
connector SM# pin and the main relay line is
open circuit or short circuit to ground.
No Next step
Yes Next step 4 Using a multimeter to check a resistor
between the fuel injectors for cylinders
SM1# and SM2# pins at 20
℃
in 14.5+/-0.5
ohm
No Replace injector
Yes Diagnostic aid 5 Whether the 3.7 Ω voltage with a multimeter
to check a cylinder injector connector 2# pin
and the negative pole of the power supply
will be.
No Next step
Repair or replace the wire harness 6 Between the X1_61# pin check cylinder
injector connector 2# pin and the ECU line is
broken or the power supply or short circuit to
ground.
Diagnostic aid