Ignition Coil Power/Ground Line Inspection - Honda GL1800 Service Manual

Disconnect the ignition pulse generator 2P red con-
nector and connect the peak voltage tester or adap-
tor probes to the ignition pulse generator side
connector terminals.
CONNECTION: Yellow (+) – White/yellow (–)
In the same manner as at the ICM connector, mea-
sure the peak voltage and compare it to the voltage
measured at the ECM connector.
• If the peak voltage measured at the ECM connec-
tor is abnormal and the measurement at the igni-
tion pulse generator connector is normal, the
Yellow or White/yellow wire has an open or short
circuit, or loose connections.
• If both peak voltages are abnormal, follow the
checks described in the troubleshooting chart on
page 18-4.
IGNITION COIL
POWER/GROUND LINE INSPECTION
• If the ignition coil signal voltage is normal but
there is no spark at the plug, perform this
inspection.
Remove the center inner fairing (page 2-10).
Turn the ignition switch "OFF."
Disconnect the ignition coil 4P connector.
POWER INPUT LINE
1.
Turn the ignition switch "ON" and check the
Make sure the
PGM-FI malfunction indicator lamp (MIL).
engine stop switch
is turned to " ."
• If the MIL stays on, check the PGM-FI ignition
relay circuits (page 18-11).
• If the MIL comes on for a few seconds and goes
off, go to step 2.
IGNITION SYSTEM
P RED CONNECTOR
o. 3 & 4 COIL CO ECTOR
o. 1 & 2 COIL
CO ECTOR
IL
o. 5 & 6 COIL
CO ECTOR
18-7