IGNITION SYSTEM
18-5
IGNITION SYSTEM INSPECTION
• If there is no spark at any plug, check all connec-
tions for loose or poor contact before measuring
each peak voltage.
• Use recommended digital multimeter or com-
mercially available digital multimeter with an
impedance of 10 M
Ω
/DCV minimum.
• The display value differs depending upon the
internal impedance of the multimeter.
• If the Imrie diagnostic tester (model 625) is used,
follow the manufacture‘s instruction.
Connect the peak voltage tester or peak voltage
adaptor to the digital multimeter.
IGNITION COIL PRIMARY
PEAK VOLTAGE
• Check all system connections before inspection.
If the system is disconnected, incorrect peak volt-
age might be measured.
• Check cylinder compression and check that the
spark plugs are installed correctly.
Disconnect all spark plug caps from the spark plugs
(page 3-8).
Shift the transmission into neutral.
Connect a known good spark plugs to the spark
plug cap and ground the spark plugs to the cylinder
head as done in a spark test.
With the ignition coil primary wire connected, con-
nect the peak voltage adaptor or peak voltage tester
to the ignition coil primary wire terminals.
TOOLS:
Imrie diagnostic tester (model 625) or
Peak voltage adaptor
07HGJ-0020100
with commercially available digital multimeter
(impedance 10 M
Ω
/DCV minimum)
DIGITAL MULTIMETER
PEAK VOLTAGE ADAPTOR
GOOD KNOWN SPARK PLUG
CONNECTION:
No.1/4 coil:
Yellow/blue (+) - body ground (–)
No.2/3 coil:
Blue/yellow (+) - body ground (–)
PRIMARY TERMINAL
Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys.
email: [email protected]