Isuzu FSR - Instrument Panel Lamps Inoperative

Body
and
Accessories
Lighting
Systems
8-65
Instrument
Panel
Lamps Inoperative
(Dimming
Lamps
Inoperative)
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Action
Place
the
headlamp
switch
in
the
PARK
position.
Are
the
tail
lamps
ON?
1.
Remove
the
taillamp
relay
from the
socket.
2.
Connect
a
DVM
between
socket
terminal
85
and
ground.
Does
the
DVM
indicate
voltage?
Locate
and
repair
the
open
in
CKT
93
(ORN)
to the
tail
lamp
relay.
Are
the
instrument
panel dimming
lamps
still
inoperative?
Connect
an
ohmmeter
between
socket terminal
86
and
chassis
ground.
Did
the
ohmmeter
indicate
continuity?
Replace
the
tail lamp
relay.
Are
the
instrument panel
dimming
lamps
still
inoperative?
Connect an
ohmmeter
between headlamp
switch
terminal
2
and chassis
ground.
Did
the
ohmmeter
indicate
continuity?
Locate
and repair
the
open
in
CKT
85
(GRN/WHT).
Are
the
instrument panel
dimming
lamps
still
inoperative?
Connect
an
ohmmeter
between headlamp
switch
terminal
1
and chassis
ground.
Did
the
ohmmeter
indicate
continuity?
Locate and
repair
the
open
in
the
ground wire
4
(BLK)
between
G105 and terminal
1 in
the
headlamp switch.
Are
the
instrument
panel
dimming
lamps
still
inoperative?
Replace
the headlamp switch.
Are
the
instrument
panel
dimming
lamps
still
inoperative?
1.
Turn
the
headlamp
illumination
control
counter
clockwise
to the dimmest
position.
2.
Remove
the
buss connector
from
joint
connector
3
(upper).
3.
Connect
a
test
lamp
between terminal
A
and
chassis
ground.
Does
the
test
lamp
light?
Replace
joint
connector
3
(upper)
buss
connector.
Are
the
instrument
panel
dimming
lamps
still
inoperative?
1.
Connect
a
jumper
between terminal
A
in
the
joint
connector
3
(upper)
connector.
2.
Disconnect
the
17-way
harness
connector
from
the
IP
cluster.
3.
Connect
a
self-powered
test
lamp between
terminal
C2
in
the
17-way
IP
cluster harness
connector
and chassis
ground.
Does
the test
lamp
light?
Repair
the
open
in
CKT
3 (BLK/RED)
between
terminal
A
in
the
joint
connector
3
(upper)
connector
and
terminal
C2
in
the
17-way
IP
cluster harness
connector.
Are
the
instrument
panel
dimming
lamps
still
inoperative?
Connect
a
test
lamp
between terminal
C1
in
the
17-way
IP
cluster
harness
connector
and
chassis
ground.
Does
the test lamp
light?
Value(s)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Yes
Go
to
Step
11
Go
to
Step
4
Go
to
Step
4
Go
to
Step
5
Go
to
Step
6
Go
to
Step
7
Go
to
Step
8
Go
to
Step
10
Go
to
Step
11
Go
to
Step
11
Go
to
Step
12
Go
to
Step
13
Go
to
Step
15
Go
to
Step
15
Go
to
Step
17
No
Go
to
Step
2
Go
to
Step
3
System
OK
Go to
Step
6
System
OK
Go
to
Step
8
System
OK
Go
to
Step
9
System OK
System
OK
Go
to
Step 13
System OK
Go
to
Step
14
System
OK
Go
to
Step
16
1998
-
MD-lsuzu