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Heater Control panel
Both heater
and
Ale
do not work
.
I
Check the
No.
17
(7.5 A)
fuse in the
under-dash
fuse/relay
box,
and
the
No. 47 (7.5
A) fuse in the
under-
hood fuse/relay box.
I
"'-
NO
Are
the
fuses
OK?
/
I
Replace the
fu ..
!s'.
and recheck.
HEATER CONTROL PANElap CONNECTOR
I
YES
Check for an open in the wire:
BlK/VEL
1.
Remove the
heater control
2
3
panel
(see
page 22-46),
2. Turn
the
ignition
switch
ON
(It).
3. Measure the
voltage
between
7
a
4
y
the
No
.
1
terminal
of
the
heater
co
ntrol panel 8P
con-
nector
and
body
ground.
Wire s
id
e
of female terminals
I
NO
Repair open in the wire betw...,
"'-
Is there battery
voltage?
/ '
the No. 11
fua.
and the h •• ter
I
YES
control panel.
HEATER CONTROL PANEl20P CONNECTOR
Check for an open in the wire:
I":S
~
1.
Turn the ignition
switch OFF.
2.
Measure
the voltage
between
1
2
1/
V V
6
V
a
9
10
the No
.
11 terminal of the
11
12
13
14 15
16
17
1a
19
20
heater control panel
20P con-
nector
and
body
ground
.
I
NO
Repllir
open in the wire between
"'-
Is there
battery
voltage?
/'
the No. 47 fu.e end the heeter
I
YES
control panel.
~WHT/BLU
Wire side
of
female terminals
ChKk for an open in the wire:
Check
for continuity between the
No
.7
terminal of the heater
con-
trol panel 8P connector
and body
4
ground.
1
Check for an open In the wire
"'-
NO
between the h •• ter control penel
Is
there continuity?
/ '
and body ground. H the wire is
I
YES
OK. check for poor ground
It
G401 and
G402.
Check for loos. wires or poor
connections .t the heeter control
panel 8P and 20P connectors. If
the connections are good. substi-
tute e known-good h.ater con-
trol penel. and recheck. If the
symptom/indication goes away.
replace the original heater con-
trol
panel.
22-39
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Troubleshooting
