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7-22
ELECTRICAL SYSTEM
IGNITION SYSTEM (DR-Z400E)
DESCRIPTION
In the capacitor discharged ignition system, the battery's electrical energy charges the capacitor. This en-
ergy is released in a single surge at the specified ignition timing point and the current flows through the
primary side of the ignition coil. A high voltage is induced in the secondary windings of the ignition coil,
resulting in a strong spark between the spark plug gap.
Regulator
/rectifier
Battery
TROUBLESHOOTING
No spark or poor spark
Check the ignition system couplers for poor
connections.
Correct
Measure the battery voltage between input
lead wires (O/W and B/W) at the CDI unit
with the ignition switch in the "ON" position and
the engine stop switch in the "RUN" position.
Correct
Continued on next page
Ignition switch
Ignition power
source circuit
Generator
Wave form
arrangement
circuit
DC-DC
converter
CPU
* Make sure the transmission is in the neutral position.
Also, make sure the fuse is not blown and the battery is
fullycharged before diagnosing.
Loose
Incorrect
Ignition coil
Throttle
position
sensor
Engine stop
switch
• Improper coupler
connection
• Faulty ignition switch
• Faulty engine stop switch
• Broken wire harness or
poor connection of related
circuit couplers
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