Toyota 14b User Manual

EM-14
ENGINE
MECHANICAL
-
Diesel Electrical
System
Diagnosis
[3B]
CONTINUED FROM
PAGE
EM-13
Pre-heating
Duration Differs
from the
Specified
Duration.
Place
ignition
switch at
ON and check if
current flow
to terminal
5 of timer is in
accordance
with
coolant
temperature.
(See
Timer
characteristics
Diagram
on
page
sT-3)
OK
No Voltage
Timer
is faulty
and
;hould be replaced.
letion
of
pre-heating,
After
comp
heck for
vvrfqvs ot
t
switch is
pl
9r
r r rrr rqr
w oYott I YYt tgt I
tvt
aced at ST.
No
Voltage
Voltage
lgnition
switch
OFF.
Place ignition
switch at
ON
and
check for voltage
to
glow plug
a few
seconds later. Thereafter,
voltage
should drop
approx.
1/2.
No Voltage
at
All
Check for
battery voltage
at
plus
side
of
glow plug.
lf
okay, replace
glow plug.
lf no voltage,
No.
1
glow plug
relay
is faulty
and
should
be replaced.
OK
Voltage
Does not
Dropby
1/2.
Check for
battery voltage
to
plus
side
of
resistor
(lntake
manifold
side).
lf
okay, replace
resistor.
lf no
voltage,
No. 2
glow plug
relay
is faulty
and
should
be replaced.
Measure
glow plug
resistance.
l^fi"tty
Glow
plug
is faulty
and should
be replaced.
Approx.0 O
Glow
plug
okay
I

Toyota 14b Specifications

General

Brand	Toyota
Model	14b
Category	Engine
Language	English