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

Page: 189 / 261

11. EFI SYSTEM OF SQR 472ENGINE
11-17
6) Fault phenomenon and judgment method
Fault phenomenon: idle speed is too high; idling flameout; idle vibration.
Repair the matters needing attention: 1, shall not be applied in any form of axial force to axial
compression into or out of a; Before 2, idle speed with stepping motor controller into the solar term
door body, the shaft must be fully retracted position at; 3, pay attention to the bypass air drain
cleaning and maintenance; 4, remove the battery or ECU, pay attention to timely to the stepper
motor reset.
A system reset method is: open the ignition switch but not immediately start the engine, wait 20
seconds, and then start the engine. If at this time that the engine idling bad, must repeat the above
steps.
A simple method to measure: (unloading joints) digital multimeter to Ohm, two probes are
respectively connected regulator AD, BC pin, 20
℃
rated resistance was 53 ± 5.3 Ω .
7. Heated oxygen sensor
1) Structure diagram and pin
2) Installation position
Exhaust manifold tail, before the three way catalytic converter
3) Working principle
The sensing element of the oxygen sensor is a kind of porous ceramic tube, tube wall is surrounded
outside of engine exhaust, the inside atmosphere. Sensing the ceramic tube wall is a kind of solid
electrolyte, with electric heating elements, see picture.
11