Page 158 - 2019 SHOP MANUAL CRF1000/A/D

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IGNITION SYSTEM
IGNITION SYSTEM INSPECTION

• If there is no spark at the plug, check all connections
for loose or poor contact before measuring the peak
voltage.
• Use a commercially available digital multimeter with
an impedance of 10 MΩ/DCV minimum.
• The display value differs depending upon the
internal impedance of the multimeter.
• If using the imrie diagnostic tester (MODEL 625),
follow the manufacturer’s instructions.
Connect the peak voltage adaptor to the digital
multimeter, or use the peak voltage tester. [2]

TOOLS:
Imrie diagnostic tester (model 625) or
Peak voltage adaptor [1] 07HGJ-0020100
with commercially available digital multimeter [2]
(impedance 10 MΩ/DCV minimum)

[1]
IGNITION COIL PRIMARY PEAK
VOLTAGE

• Check all system connections before performing this
inspection. Loose connectors can cause incorrect
readings.
• If the system is disconnected, incorrect peak voltage
might be measured.
• Check the cylinder compression and check that the
spark plug is installed correctly in the cylinder head.
Disconnect the spark plug caps (page 3-6).
Connect a known good spark plug [1] to the spark plug
cap and ground it to the cylinder head as done in a
spark test.

[1]

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