Honda Motorcycle Service Manual page 353

ELECTRICAL FUNDAMENTALS
When the ohmmeter is connected in series, resistance values
will be high.
In the diagram, measure resistance R1 by moving the probe
shown at
@
to ground.
Example
To check the CDI exciter coil, resistance can be measure at
O
or
0.
Measuring resistance between
O
and ground auto-
matically checks for a broken wire (black/red) and for a bad
connection at the alternator connector. If the resistance is
normal between
0 )
and ground,
@
need not be checked.
If the resistance between
O
and ground was checked first and
the correct resistance was measured, there is still a possibility
of a broken wire and/or loose connection between
O
and
0.
That would require more testing to locate the fault.
WIRE HARNESS
/
I
j
CDI EXCITER
T '
COIL
CDI UNIT
-
If, while measuring resistance at.@, the negative probe is plac-
ed on the ground wire (greenl, then the connection to ground
is checked as well.
To check the operation of an exciter coil, place the probes as
shown in the diagram. If the resistance is normal, then the ex-
citer coil, the wire connected to the coil (blacklred), and the
ground wire (green) are all normal.
If the resistance is far off the standard value, check the
following:
1. Broken ground wire (green1
Place a probe at
O
and measure resistance to ground. If 0 0
is measured, then the green wire is properly grounded. If
w
(infinity) is measured, then you may suspect a broken wire
(green) or loose connection at the ground terminal.
Date of Issue: March, 1 9 9 5
O
HONDA MOTOR CO.,LTD.
21-1 7