Service Manual — page 165 of 715

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FUEL SYSTEM (DFI) 3-75
Vehicle-down Sensor (Service Code 31) (DTC C0064)
  This sensor has a weight [A] with two magnets inside,
and sends a signal to the ECU. But when the motorcycle
banks 60 ∼ 70° 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 injectors
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 off, and then turn it on.
   Vehicle-down Sensor [A]
   Ground Terminal [B]: G
   Output Terminal [C]: Y/G
   Power Source Terminal [D]: BL

Vehicle-down Sensor Removal
                          NOTICE
    Never drop the vehicle-down sensor especially on
    a hard surface. Such a shock to the sensor can
    damage it.

• Remove:
   Upper Fairing (see Upper Fairing Removal in the Frame
     chapter)
•   Disconnect:
     Vehicle-down Sensor Connector [A]
•   Remove:
     Vehicle-down Sensor Bolts [B] and Nuts
     Vehicle-down Sensor [C]
Vehicle-down Sensor Installation
• Be sure to install the rubber damper [A] and collars [B] on
  the upper fairing bracket.