Dc-Cdi Systems Integrated With Side Stand Switch And/Or Neutral Switch; Ignition Coil - Honda Motorcycle Service Manual

IGNITION SYSTEMS
DC-CDI Systems Integrated With Side Stand Switch A n d / o r Neutral Switch
DC-CDI Systems integrated with a side stand switch and a neutral switch operate similar to other DC-CDI systems except
that the ignition control module (DC-CDI unit) also controls the circumstances that allow ignition through a resistor and a
transistor.
The external detection circuit similar to the system described previously, but the method of ignition control is different.
The resistor determines whether the transistor is turned off or turned on. The transistor determines how the ignition cont-
rol circuit works by activating or deactivating the DC-DC converter.
If the transistor is turned off, the DC-DC converter is activated t o make ignition possible.
The resistor receives information through the external detection circuit consisting of the side stand and neutral switches. A
diode in this circuit must have a ground path to make ignition possible.
Ignition is not possible if both of the following conditions occur:
(a) side stand is lowered
(b) transmission is in gear
Models without transmissions, (such as scooters), do not have neutral switch or clutch circuits and therefore condition (b)
does not apply.
Example Of A Circuit For Models With Manual Clutch/Transmission
IGNITION SWITSH
IGNITION COIL
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FUSE
DC-DC CONVERTER
Under conditions (a) and (b), the signal from the DC-DC
converter is applied to the transistor through the resistor.
turning the transistor ON. When the transistor is turned ON.
the signal from the DC-DC converter is deactivated. This
means that no electrical current from the DC-DC converter is
applied to the capacitor, and ignition is not possible.
DC-DC CONVERTER
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Date of Issue: March, 1995
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HONDA MOTOR CO..LTD.
When:
t h e side stand is retracted and
the transmission is placed in neutral
the signal from the DC-DC converter is grounded through
the side stand and the neutral switches. The signal is not
applied t o the transistor, and therefore the transistor is
turned OFF. When the transistor is turned OFF, the signal
from the DC-DC converter is activated and,therefore,applied
to the capacitor t o make ignition possible.