Suzuki VLR1800 Service Manual page 364

1H-8 Ignition System:
CAUTION
!
Before using the multi-circuit tester and peak
volt adaptor, be sure to refer to the
appropriate instruction manual.
Tester knob indication
Voltage: ( )
3
"B"
2
1. Battery
2. ECM
3. Peak voltage adaptor
[A]
[A]: Front (#1) cylinder
3) Inspect 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.
4
"A"
1
I822H1180014-03
4. Ignition coil
"A": New spark plug
"B": Y or G lead wire
[B]
I822H1180015-03
[B]: Rear (#2) cylinder
4) Repeat the b) procedure several times and measure
the highest peak voltage.
Ignition coil primary peak voltage
250 V and more
If the peak voltage is lower than the specified values,
inspect the ignition coil. Refer to "Ignition Coil / Plug Cap
/ Ignition Coil Inspection (Page 1H-6)".
Ignition Coil / Plug Cap Resistance
1) Disconnect the ignition coil/plug caps. Refer to
"Ignition Coil / Plug Cap and Spark Plug Cap
Removal and Installation (Page 1H-4)".
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
: 09900–25008 (Multi-circuit tester set)
Tester knob indication
Resistance (Ω)
Ignition coil/plug cap resistance
Primary: 1.1 – 1.9 Ω ((+) tap – (–) tap)
Secondary: 10.8 – 16.2 kΩ (Plug cap – (–) tap)
Ignition Coil Resistance
• Disconnect the spark plug caps. Refer to "Spark Plug
Removal and Installation (Page 1H-6)".
• Measure the ignition coil resistance in both the
primary and secondary windings. If the resistance is
not within the standard range, replace the ignition coil
with a new one.
Special tool
: 09900–25008 (Multi-circuit tester set)
(A)
I822H1180016-01
I822H1180017-03