Suzuki GSF650S - Page 270

ELECTRICAL SYSTEM 6-33
Measure ignition coil primary peak voltage (for #2 and #3 cylin-
ders) in the same manner as for cylinders #1 and #4.
Ignition coil (for #2 and #3 cylinders):
B/Y terminal – Ground
(

+ Probe) (

- Probe)
NOTE:
Do not disconnect the ignition coil primary lead wire.
$ Ignition coil primary peak voltage: 140 V and more
' Tester knob indication: Voltage (&)
1
If the voltages are lower than the standard values, inspect the
ignition coil and the signal generator.
IGNITION COIL RESISTANCE
• Measure the ignition coil resistance in both the primary and
secondary windings. If the windings are in sound condition,
their resistance should be close to the specified values.
$ Ignition coil resistance
Primary: Approx. 2 – 4 Ω (

+ tap –

- tap)
Secondary: Approx. 30 – 40 kΩ
(spark plug cap – spark plug cap)
0 Tester knob indication: Resistance (Ω)
SIGNAL GENERATOR PEAK VOLTAGE
• Remove the battery.
• Disconnect the ignitor coupler

1.
• Reconnect the battery.
NOTE:
Make sure that all of the couplers are connected properly and
the battery is fully-charged.
• Connect the multi circuit tester with the peak volt adaptor as
follows.
B/Bl (

+ Probe) – Y/W (

- Probe)
" 09900-25008: Multi circuit tester set
#
Do not touch the tester probes and spark plugs to pre-
vent an electric shock while testing.
Before using the multi circuit tester and peak voltage
adaptor, refer to the appropriate instruction manual.
Signal
generator
Signal
generator
coupler
Ignitor
coupler
Peak
volt
adaptor