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Honda CB400F 1989 Service Manual page 158

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ELECTRIC STARTER/STARTER CLUTCH
TROUBLESHOOTING
Starter
motor
will
not turn
Check for
a
blown
out
main or sub
fuses before servicing.
Make sure the battery is fully charged and in good condition.
>
Check for
loose
or poorly connected battery
ter¬
minals, and opened or
shorted
battery cable.
- ABNORMAL
Poorly connected battery terminals
Open or short circuit in battery cable
[
NORMAL
I
I
Check for
loose or poorly
connected
starter
relay switch
terminals and 4P
connector.
- ABNORMAL
Poorly connected
terminals or 4P
connector
NORMAL
*
Check
for loose or poorly
connected
starter
motor cable,
and opened
cable.
)
- ABNORMAL
Poorly
connected
motor
cable
Open circuit in
motor
cable
T
NORMAL
I
With the ignition switch "ON", push the
starter
switch
and check for a
"click" sound from the
starter
relay switch.
Connect the
starter motor
terminal
to
the bat¬
tery
positive
terminal directly.
(Because
a
large
amount
of
current
flows, do not
use thin
wires)
CLICKS
Starter
motor
turns
Starter
motor
does
not turn
NO CLICK
• Faulty
starter motor
i
Loose or disconnected
starter motor
cable
Faulty
starter relay
switch
>
Disconnect
starter
relay switch
connector,
and
check the
lelay
uuil ground wire lines
as
below
for continuity:
1. Green/Red terminal-clutch switch diode
neutral switch line
(with
transmission into
neutral and clutch lever
released.)
2. Green/Red terminal-clutch switch-side
stand
switch line
(in
any gear except neutral,
and
with the clutch lever
pulled in and the side
stand
up.)
NO CONTINUITY-*-
Faulty
neutral switch
Faulty clutch
switch
diode
Faulty clutch switch
Faulty
side stand switch
Loose or
poor
contact
of
connector
Open circuit in wire harness
CONTINUITY
1
Connect the
starter
relay switch
connector.
With the
ignition switch ON
and the
starter
switch
pushed, measure
the
starter
relay
volt¬
age at
the
starter
switch
connector
(between
Yellow/Red
(+)
and ground
(-)).
-
NO VOLTAGE
Faulty ignition
switch
Faulty
starter
switch
Blown
out
main
or sub fuses
Loose or
poor contact
of
connector
Open circuit in wire harness
VOLTAGE APPEARED
Check the
starter
relay switch operation
NORMAL
Loose or
poor
contact
of the
starter
relay
switch
connector
ABNORMAL
Faulty starter relay
switch
1

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Cb-1 1989