Measuring Current; How To Measure Current Using Ammeter - Honda Motorcycle Service Manual

ELECTRICAL FUNDAMENTALS
2. Faulty exciter coil
Disconnect the alternator connector. Compare the resistance
value at
@
(measured on the previous page) and at
@.
If the t w o values are not the same, suspect a broken black/
red wire or loose alternator connector.
-
If both resistance values are the same, but not in the
correct range, the exciter coil may be faulty.
3. Shorted wire or wire harness
To see if the green or blackired wire is shorted, check the
continuity between all other wires. If you have continuity
between the other wires, replace the wire harness.
MEASURING CURRENT SERIES CONNECTION PARALLEL CONNECTION
/
140001 (WRONG)
Current is not normally checked during motorcycle service pro-
cedures. Though it is used for testing components, current
R
m
measurements are not used for checking continuity within
circuits.
How to measure current using ammeter.
Connect the ammeter in series in the circuit t o measure the
current flowing through
it.
Touch the @(red) probe to the positive end of the circuit and
I 1
the
@
(black) probe t o the negative end.
Make sure the current flow does not exceed the maximum
range selected, or the meter could be damaged.
CAUTION
.
Connecting the ammeter in parallel, like a voltmeter.
can damage the ammeter from a current overflow.
-
Connecting the ammeter between the battery terminals
will damage the ammeter.
.
Turning on the starter motor while the ammeter is con-
nected between the battery terminal and the battery
cable will damage the ammeter.
21-18
Date of issue: March. 1995
O
HONDA MOTOR CO..LTD.