3-44 FUEL SYSTEM (DFI)
Vehicle-down Sensor (Service Code 15)
This sensor has a weight [A] with two magnets inside,
and sends a signal to the ECU. But when the motorcycle
banks 65° or more to either side (in fact falls down), the
weight turns and the signal changes. The ECU senses this
change, and stops the fuel pump relay, the fuel injector and
the ignition system.
Hall IC [B]
When the motorcycle is down, the ignition switch is left
ON. If the starter button is pushed, the electric starter turns
but the engine does not start. To start the engine again,
raise the motorcycle, turn the ignition switch to OFF, and
then turn it to ON.
Vehicle-down Sensor [A]
Ground Terminal [B]: G/P
Output Terminal [C]: BK/BL
Input Terminal [D]: V/R
Vehicle-down Sensor Removal
Never drop the vehicle-down sensor especially on
a hard surface. Such a shock to the sensor can
Remove the front center cover (see Front Center Cover
Removal in the Frame chapter).
Disconnect the vehicle-down sensor connector [A].
Vehicle-down Sensor [C]
Vehicle-down Sensor Installation
The UP mark [A] of the sensor should face upward.
Incorrect installation of the vehicle-down sensor
could cause sudden loss of engine power. The
rider could lose balance during certain riding situ-
ations for an accident resulting in injury or death.
Ensure that the vehicle-down sensor is held in
place by the sensor bracket.
Tighten the vehicle-down sensor bolts.