Suzuki DF15 - Ignition System Troubleshooting and Inspection

3-4 IGNITION AND ELECTRICAL
TROUBLESHOOTING
Perform the following ignition system tests when the engine is hard to start in order to determine if the cause
is in the ignition or another system.
START
Check the spark condition.
Check if the spark plug is in good condition.
(See page 2-7.)
Check the spark plug cap for any evidence
of the high-tension leak.
Disconnect the engine stop switch lead wire
connector. (Blue/Red, B).
Check the ignition coil resistance.
(See page 3-7.)
[Primary: 0.2 – 0.4 Ω]
[Secondary: 6.8 – 10.2 kΩ]
Check the spark plug cap resistance.
(See page 3-8.)
[Cap resistance: 8 – 12 kΩ)]
Check the condenser charge coil resistance.
(See page 3-5.)
[Coil resistance: 12.5 – 18.8 Ω]
Check the pulser coil resistance.
(See page 3-6.)
[Coil resistance: 148 – 222 Ω]
Check the CDI unit. (See page 3-7.)
OK
OK
OK
OK
OK
OK
No or weak sparks
No or weak sparks
Check the ignition timing by using
the timing light.
[ATDC 5˚ at 1 000 r/min]
The cause will not be in the ignition
system.
Not good
Not good
Not good
Sparks
Out of spec.
Out of spec.
Out of spec.
Out of spec.
Out of spec.
Replace the spark plug with a new one.
Check and/or replace the engine stop
switch. (See page 3-8.)
Replace the ignition coil.
Replace the spark plug cap.
Replace the condenser charge coil.
Replace the pulser coil.
Replace the CDI unit.