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From page
22-24
I
Check
for
a short
In
the
wires:
1.
Rem
ove
th
e
heater control
panel
(see
page
22-461.
2.
Check for continuity
betwee
n
the No.2
and
NO.3 terminals
of
the heater
control
panel8P
con-
nector and body
grou
nd
indi-
vidually.
"-
Is the
re
conti nuity?
/
NO
Check for a short to
power:
Ch eck
the
sa
me
wi res
for
voltage.
Is
there an
y voltage?
"-
NO
Check for
an open in the
wires:
Check
for continuity
between
the
following terminals
of
the recircu-
lation
control
motor
4P
connector
and
the
heater
contro
l pan el
8P
connector.
SP;
4P;
No.
2
-
No.
4
No.3-No
.
2
"-
Is
there
continu ity?
/'
YES
Check for
loos
e
wires or poor
connections at the heater control
panel 8P connector and at the
recirculation control
mot
or
4P
connectOr.
If
the
connections
are
good.
substitute
a known-good
heater
control
panel,
and recheck.
If the symptom/Indication goes
away,
r . . ace the .mginal huter
control
panel.
YES
Repair short in the
wlre!s
) between
the recirculation
co~
motor and
the _
... eontroI
panel.
Repair short to power in the wire
YES
between the recirculation control
motor
and
the
heater
control
panel.
(This damages the
heater
control
panel.1
NO
Repair
open In the wlre{s) between
the recirculation control motor
ond
the _ _
eontroI
panel.
HEATER
CONTROL
PANEL 8P CONNECTOR
y
1
GRN/WHT
4
®
+
Wire
side
of
fema
le
terminals
3
GRN/WHT
f-l--"'i"'--+-+-
4
8
RECIRCULATION CONTROL MOTOR
4P CONNECTOR
Wire side
of
female
terminals
22-25
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Table of Contents
Troubleshooting
