4. ELECTRONICALLY CONTROLLED CARBURETOR SYSTEM
SYM
4-10
O
2
SENSOR ILLUSTRATION:
Basic Principle
Use of DC 9~16V power supply, a total of two pin plug, 1 for the signal grounding pin; 1 for the O
2
signal
pin.
O
2
Sensor output feedback signal to Electronic controlled unit and Formed near the fuel ratio controlled
in the range of 14.5 ~ 14.7 fuel closed loop control
When the air-fuel ratio is controlled reaching to equivalent point, CO/HC/Nox can have the maximize
conversion.
Testing Procedures & Detection judge:
1. Use after-sales service software inspect the O
2
Sensor working position.
●
Start the vehicle
●
Throttle fully opened and keep 3 minutes.
●
Observe whether the fault light is blinking.
●
The blinking frequency of the fault light is 4 times, judgment as failure.
2. Use after-sales service software inspect the O
2
Sensor working position.
●
Start the vehicle
●
Throttle fully opened and keep 3 minutes.
●
Observe whether the voltage of the O
2
sensor is between 0~1V.
●
If the figure no change, judging the O
2
sensor doesn’t work.
Treatment of abnormal phenomena:
●
The O
2
sensor is damage, or adapter connector poor contact.
●
Check whether there is any abnormal on main distribution line.
●
When the engine temperature sensor is abnormal, suggestion is to replace new engine temperature
sensor and recheck it.
ET SENSOR
ET SENSORET SENSOR
ET SENSOR
TPS
TPSTPS
TPS
O
OO
O
2
22
2
SENSOR
SENSORSENSOR
SENSOR
IGN COIL
IGN COILIGN COIL
IGN COIL
ACG/FLY WHEEL
ACG/FLY WHEELACG/FLY WHEEL
ACG/FLY WHEEL
PLUG
PLUGPLUG
PLUG
CPS
CPSCPS
CPS
ECU
ECUECU
ECU
BATTERY
BATTERYBATTERY
BATTERY
To Next Page
Loading...
