Charging System/Alternator Troubleshooting - Honda Nighthawk CB 750 1991 Service Manual

Charging System/Alternator
Troubleshooting
Battery Overcharging
-
faulty regulatorlrectifier
Battery Undercharging
NOTE
-
In order to obtain accurate test readings, the battery must be fully charged and in good condition. Refer to the
Common Service Manual, section 22, for instructions on checking the battery condition.
Measure the battery current leakage
Incorrect
Check the regulatorlrectifier
(leak test : page 13-5)
(unit inspection : page 13-7)
Correct
I
I
Incorrect
I
I
Correct
I
I
r
-
Shorted wire harness
Faulty ignition switch
Faulty regulatorlrectifier
Check the regulated vol Correct
Check the battery using a Honda Battery Tester
I
I
Not charging
I
i
Electric system over-
loading
a
I
Check the va
-"I I Y 1 I I 1 ~ 1 - - Upall LllLull III Wllr; 1 1 6 1 1 1 1 > 5
charging line and ground line (page 13-6)
r
.
"ted connectors
I
Normal
I
I 1
Faulty battery
r
Check the alternator (charging and field coils)
resistance at the regulatorlrectifier connector
t
Abnormal
Check the alternator charging and field coils
(page 13-6)
(page 13-7)
~ltages of the regulatorlrectifier bat-
I
Normal
A,.
- .
n - - . .
-: :.:
:--,.
------
I I
Abnormal Normal
i .
Faulty alternator
Check the regulatorlrectifier
Abnormal-. Faulty regulatorlrectifiel
(unit inspection : page 13-7)
t
Poorly connected
alternator connector