Suzuki drz 400 2002 Service Manual

IGNITION SYSTEM
DESCRIPTION
ELECTRICAL SYSTEM 7-19
In the capacitor discharged ignition system, the electrical energy generated by the generator charges the
capacitor. This energy 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.
Igni ti on switch
r----- ~~~~ --~--~
Engine stop
swi t ch
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At.' - ' )'~--"': arrangement
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TROUBLESHOOTING
(~ _____ N _ o _ s _ p _ a _ r _ k _ o ~ r ~ p _ o _ o _ r _ s _ p _ a _ r _ k ____ ~)
I
Check the ignition system couplers for poor
connections.
'-
I
Correct
Measure the battery
voltage between input
lead wires (O/W and B/w) at the COl unit
with the ignition switch in the "ON" position and
the engine stop switch
in the "RUN" position.
Correct
Continued on next page
To igni tion
switch
Ig""ion cOi l
Throille position
sensor
Slde~
~W i~~~nd ,h-
NeutralS~
Neutrat .,tcn &
indicator light
• Make sure the transmission is in the neutral position.
Also, make sure the fuse is not blown and the battery is
fullycharged before diagnosing .
1---- Loose • Improper coupler
connection
Incorrect - • Faulty ignition switch
• Faulty engine stop switch
• Broken wire harness or
poor connection of
related
circuit couplers
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Suzuki drz 400 2002 Specifications

General

Displacement	398 cc
Bore x Stroke	90.0 mm x 62.6 mm
Compression Ratio	11.3:1
Cooling System	Liquid-cooled
Fuel System	Mikuni BSR36 carburetor
Starter	Electric
Transmission	5-speed constant mesh
Final Drive	Chain
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Link type, coil spring, oil damped
Front Tire	80/100-21
Seat Height	935 mm (36.8 in)
Ground Clearance	300 mm (11.8 in)
Wheelbase	1, 485 mm (58.5 in)
Dry Weight	119 kg (262 lbs)
Engine Type	4-stroke, single cylinder, DOHC
Ignition	CDI
Front Brakes	Disc
Rear Brakes	Disc
Rear Tire	120/90-18
Fuel Capacity	10.0 L (2.6 US gal)