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Charging System
Troubleshooting (cont'd)
AtternatorJRegulator Test
NOTE: Make sure the battery is
sufficiently charged
(see section 23).
Arternator/Regulator Test:
1.
Connect a Sun
VAT-40
(o
r
equivalent test
e
r
),
and
turn
the
selector
switch
to
positi on
1
(starting).
2.
Shift
to
neutral
(AfT
in
~
or
11!1
)
position
,
a
nd
s
tart
the
engine.
Ho
ld
the
engine at
3,000
rpm
with
no
load
until
the
radiator fan
comes
o
n,
then
let it
idle.
3.
Ra ise
the
e
ngine
speed to
2,000
rpm
,
and
hol
d it
there.
Is
the voltage
over'
5.1
V?
NO
Atternator/Regulator
Test (cont'd)
:
,.
Re leas
e the accele
rator
pedal.
and let
the
engine idle.
2.
Make sure all
accessori
es
are
turned off.
Turn
the select
or
switch to position
2
(charging)
,
3
Re move
the
inductive
pick-up,
and
lero
th
e
ammeter.
.;.
Pla
ce
the
inductive pick
-up
over
the battery ground
cable
so
that
the
arrow
points to th
e
battery negative
terminal.
5.
Rai
se
th
e engine speed
to
2 000
rpm
,
and
hold
it
there.
Is th
e
volta
ge
less
than
13.5 V7
NO
Alternator/Regulator Test
(cont'd):
Apply
a load
with
a
VAT-40 unlil
the battery
vo
ltage
drops
to
between
12 -
13.5
V.
To
next
page
4-28
YES
LOAD ADJUS"reR
ICARBON PILEI
VOLT
SELECTOR
FIELD
SELECTOR
INDUCTIVE
PICK·UP
IGRNI
Replace
the
voltage
regulator.
Test and repair
the alternator
com-
ponents.
FULL FIELD
TESTER
LEAD
IBLUI
WHTWIRE
VOLTMETER
NEGATIVE
LEAD IBLKI
NEGATIVE TESTER
CABLE IBIJ(I
INDUCTIVE
PICK·
UP
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Table of Contents
Troubleshooting
