Pontiac Fiero 1988 Service Manual page 928

I N T R O D U C T I O N
Power Distribution
The Power Distribution schematic shows
the wiring from the Battery and Generator to
the Starter Solenoid, Fuse Block, Ignition
Switch and Light Switch. The first component
after a Fusible Link is also shown. In certain
instances, the first component after a Fuse
Block fuse and Light Switch is also shown.
The Power Distribution schematic refers to
Fuse Block Details and Light Switch Details
schematics. By using these three (3) schemat-
ics, power distribution wiring can be followed
from the Battery and Generator to the first
component after a Fusible Link, Fuse and
Light Switch. The ability to follow the power
distribution wiring to the first component in
each circuit is extremely helpful in locating
short circuits which cause fusible links and
fuses to open.
Figure 5 is a sample Power Distribution sche-
matic. It shows how voltage is applied from the
positive Battery terminal to the various cir-
cuits on the car. For example, Battery voltage
is applied to the Starter Solenoid, Fusible Link
D, the BED wire and connector C100 to Fuse 1
and Fuse 2 in the Fuse Block and the Light
Switch in the LH Pod. These fuses are said to be
"Hot At All Times", since Battery voltage is
always applied to them.
Notice that Battery voltage is also applied
to Fusible Link F and the RED wire to the
Coolant Fan Relay.
POWER DISTRIBUTION
FUSIBLE LINK D
A5 « CJJJQ
P
I
V 6 V I N L 1 RED
L4 VIN U 1 BLK
i
V6 VIN L 2 RED |
L4 VIN U 3 RED FUSIBLE LINK F ,
- = o ;
~~~~\6
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£2
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2 V 6 V I N L .8 GRN
L 4 V I N U 1 BLK
2 RED | 2
I L 4 V I N U 19 BLK
I V6 VIN L 32 BLK
—I COOLANT
j
£M
I RELAY
! PAGE 31 0
3 RED
H
2
I
"I COOLANT
I
j
FAN
'
1 R E
L A Y
I j PAGE 31-1
STARTER
S SOLENOID
ID
I
2
DJLL
S206
I D
L ;
n
3 \ HEAD \
LIGHT SWITCH
PARK
p i .
.12.1:
LH_
POD
SEE LIGHT
SWITCH
DETAILS
PAGE 12 0
2W
S E E G R O U N D
D I S T R I B U T I O N
PAGE 14-2
i
G 1 0 0
HOT AT ALL TIMES
L J
HEADLIGHT
DIMMER
SWITCH
Figure 5 - Typical Power Distribution Schematic
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