Honda TRX680FA Service Manual page 49

TECHNICAL FEATURES
After warming up - idling
• When the PCM receives input signals that indicate the completion
of engine warm-up, it operates the step motor to move the slide
valve to the downward. This results in a reduced amount of
bypassed air compared to the amount during engine warm-up,
which maintains proper engine idle speed.
STEP MOTOR
SLIDE VALVE
BANK ANGLE SENSOR
The bank angle sensor is located under the steering cover, it detects a vehicle rollover and interrupts the ignition/fuel sys-
tem control. The bank angle sensor system controls the power supply for the injector, ignition coil and fuel pump directly
through the engine stop relay.
MAIN4
FUSE £ IGNITION ST/ECM
SWITCH FUSE
BATTERY
INJECTOR
IGNITION
COIL
FUEL PUMP
OPERATION
When the vehicle topples over or tilts over 70 degrees horizontal or 135
degrees cross direction, the pendulum magnet inside the bank angle
sensor tilts and turns the reed switch on. Then, the bank angle sensor
opens the engine stop relay.
70° BANK ANGLE POSITION
NORMAL
POSITION
70° /(approximately)
70° (approximately)
2-5