Rollover Sensor - KTM 1190 RC8 R EU/UK 2009 Repair Manual

41/THROTTLE VALVE BODY

Rollover sensor

29.11
Function description
–
The injector is supplied with battery voltage by the power relay. The EFI control
unit calculates the amount of fuel required and grounds the injector via the amplifi-
cation stage in the EFI control unit. The longer the injector is connected to ground,
the greater the amount of fuel injected.
Injector
Resistance at: 20 °C
(68 °F)
Installation location
–
The rollover sensor is located on the base of the air filter box.
900002-60
Rollover sensor construction
1 Pendulum with a magnet
2 Circuit board with a Hall sensor
3 Housing
4 Spacer
5 Retainer for the connector seal
6 Connector seal
A Normal position, left-hand corner
900004-10
B Normal position, right-hand corner
Component description
–
The sensor makes use of the Hall effect. A pendulum with a magnet attached is
fitted in the rollover sensor. The pendulum passes a Hall element. The evaluation
electronics of the rollover sensor calculates the Hall voltage and activates the signal
voltage.
Pin overview
4 Sensor ground
5 Signal wire
6 System voltage
Description of function
–
The rollover sensor is connected in series to a sensing resistor (on feed side and
ground side) located in the EFI control unit. The evaluation electronics of the
rollover sensor switches the signal voltage, depending on the inclination of the
vehicle, via a resistor to voltage or to ground. Using the voltage value from the
400660-10
signal wire, the EFI control unit can determine the inclination of the vehicle.
Rollover sensor
Voltage (Rollover AD)
"no fall detected"
Voltage (Rollover AD)
"fall detected"
10.5... 13.0 Ω
0.4... 1.4 V
3.7... 4.1 V
226