KYMCO AHG5, Service Manual

Page: 246 / 363

13. Fi DIAGNOSTIC TOOL
DT X360
8
3.9. Oxygen Sensor
4 Pins
Power Input Grounded
Heater Signal Output
Input: DC 8~16V from battery
Oxygen sensor is located at front part of the
exhaust pipe to detect the A/F ratio and then
send the data to ECU for controlling the fuel
injecting.
The ECU will drive the heater in the O
2
sensor to make the sensor works because
the sensor will not work and no output signal
at the exhaust temperature lower than
350°C.
The resistance of a normal oxygen sensor is
6.7~9.5
Ω
.
Voltage output after engine warm
A/F<14.7 (Reach Mixture) : >0.7V
A/F>14.7 (Lean Mixture) : >0.18V
3.10. Rollover Sensor
3 Pins
Power
Input
Grounded Signal
output
Input: DC 5V from ECU
Once the vehicle tipped more than 65
degree, the rollover sensor will send the
grounding signal to the ECU for it to
determine the vehicle is tip over and then cut
off the fuel and power supply to stop the
engine.
The sensor is installed on the centerline of
the vehicle frame.
To restart the vehicle, follow the following
steps.
1. Lift the vehicle
2. Key off
3. Key on
There is a Hall magnetic component inside
the rollover sensor.
Vehicle does not tip over: 0.4V~1.4V
Vehicle tip over: 3.7V~4.4V
。