Suzuki GSF650A Service Manual page 345

Tester knob indication: Voltage (
Ignition coil/Plug cap #1
Ignition coil/Plug cap #2
Ignition coil/Plug cap #3
Ignition coil/Plug cap #4
(B)
"A"
2
2. ECM
3. Peak voltage adaptor
4. New spark plug
5. Ignition coil
7) Measure the ignition coil primary peak voltage in the
following procedures.
WARNING
!
Do not touch the tester probes and spark
plugs to prevent an electric shock while
testing.
a) Shift the transmission into neutral, turn the
ignition switch ON and grasp the clutch lever.
b) Press the starter button and allow the engine to
crank for a few seconds, and then measure the
ignition coil primary peak voltage.
)
((+) Probe) ((–) Probe)
Green wire
Ground
terminal
W/BI wire
Ground
terminal
Black wire
Ground
terminal
Yellow wire
Ground
terminal
(A)
I718H1180003-02
3
"B"
"C"
5
4
I718H1180004-02
"A": (+) probe
"B": (–) probe
"C": For engine stop switch
8) Repeat the b) procedure a few times and measure
the highest peak voltage.
If the voltage is lower than standard range, inspect
the ignition coil/plug cap and the CKP sensor.
Ignition coil primary peak voltage
80 V and more
9) After measuring the ignition coil primary peak
voltage, reinstall the removed parts.
Ignition Coil / Plug Cap Resistance
1) Remove the ignition coil/plug caps. Refer to "Ignition
Coil / Plug Cap and Spark Plug Removal and
Installation (Page 1H-3)".
2) Measure the ignition coil/plug cap for resistance in
both primary and secondary coils. If the resistance is
not within the standard range, replace the ignition
coil/plug cap with a new one.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Resistance (Ω)
Ignition coil resistance
Primary: 1.1 – 1.9 Ω ((+) terminal – (–) terminal)
Secondary: 10.8 – 16.2 kΩ (Spark plug cap – (–)
terminal)
( ) ( )
3) After measuring the ignition coil/plug cap resistance,
reinstall the removed parts.
Ignition System: 1H-5
(A)
I718H1180005-01
( )
( )
I718H1180006-01