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LIGHTS/ METERS/
SWITCHES
If the
va lue
is O
V,
check for continuity between
the
combi
nation meter SP
(Bl
ack)
connectors terminal
and
the ECM multi
-connector
Ye llow/Green ter11,inc1 ls.
If there is no
continuity,
check the wire hMness and
combination meter
sub-harn
ess for
an
open
circuit.
IF Lhere is
conti
11uily, rt1JJl;,11,;-, L he coml.Jina
l
ion
meter
pri
nted
circ.11it
board
(page
19-8).
COOLANT TEMPERATURE
GAUGE/SENSOR
19-14
THERMO
SENSOR
UNIT
INSPECTION
Drai
n the
coolant
(pllgP.
6-:1).
Disconnect the wir-, cormeclor
from
t
he ECT/thermo
sensor
1rnd
rP.movP. the
sensor.
SusJJend the
ECT/t
hermo
sensor
in a
pan of
cool
ant
(1
:1 mixture) on an electric heating element and 111ea
-
su re
the
resist
ance
th
rough t he sensor lls thP. c.oorant
heats up.
Soak the
ECT/thermo
senso
r
in coo
lant up
t
o
it
s
threads
with
at
least
40 m
m
{1
.6
in)
from
th
e bottom
of
t he pan
to Lire I.Ju
l
torn of
the
senso r.
Keep
the
tP.mper11t
ure constant fo
r
3 minutes
before
test
ing. A sudden
change
of temperatu re
wil
l
rP.s11lt
in
incorrect
readings
.
Do not let
the
thermometer
or
ECT
/thermo
sensor touch the
p
an.
Replace
the sensor if
it
is o ut
of
specification by more
th
an
10%
at
any te,nperalure
listed.
Te mperature
80'C
(68' F)
12o·c
(248'F)
Resistance
2.1
- 2.6
kfl
:
0.65 -
0.73
k.Q
THERMO SENSOR
TERMINAL
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