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FUEL SYSTEM (DFI) 3-73
Vehicle-down Sensor (Service Code 31)
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:
Fuel Tank (see Fuel Tank Removal)
Fuel Tank Bracket Bolts [A]
Fuel Tank Bracket [B]
Rivet [C]
•
Turn up the heat insulation rubber plate.
•
Disconnect:
Vehicle-down Sensor Connector [A]
•
Remove:
Vehicle-down Sensor Bolts [B] and Bracket [C]
Vehicle-down Sensor
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