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PGM-FI System
Engine Control Module/Powertrain Control Module (ECM/PCM) -
'98 - 00 Models
NOTE:
The Malfunction Indicator Lamp
•
If
th
is symptom is
interm
ittent,
check
for:
(MIU
never com
es
on 'even for
-
A loose
FI
ElM (15 AI fuse in the
under-hood
fuse/relay box
two
seconds) after the
ignit;on
is
-
A loose
No. 25 METER
(7.5
A) fuse in the under·dash fuse/relay box
turned
ON
1111.
-
A
loose
No. 13 FU EL PUMP
(15
A) fuse
in
the under-dash fuse/relay box
-
An intermittent short
in
the wire between
the
ECMIPCM (AlB) and the gauge assem-
bly
T urn
the ignition
switch
ON (II).
-
An inte rmittent short
in
the w ire between the
ECM/PCM
(C 19) and the MAP
sensor
-
An interm ittent
short
in
the w ire between t
he
ECM/PCM
(e28), the TP
senso
r, t he
EGR valve lift sensor
and/or
fuel
tank pressure sensor
-
A fautty PGM
-FI
main
relay
-
Repair
short or
open in
t
he
wire betw
een t
h
e
No
.
25
"-
NO
METER (7.5 A) fu
se
and th
e
Is the low oil pressure light on?
gauge
assembly.
YES
-
Replace t he No.
25 METER
17.5
AI fuse.
Try to start the
engine.
ECM/
PCM CONNECTOR A
I32PI
Check for an open In
the
wire or
1/1/1
3 4
5 6
,/
8
/
10
/ '
bulb (MIL
line):
1
/1/114
1/
16 171 819
~O
21
/
23
2
"-
YES
1.
Tum the ignition
switch
OFF.
1
/
2930
/
32
Does the
eng
ine
start?
/'
2. Con nect the ECM/PC
M
co n-
262
MILIGRN/O~
necta
r termina
l
A1a to body
4
NO
ground
with
a jumper wire.
JUMPERWlRE
3.
Turn
the ignition
switch
ON (II).
0
Wire side of female
terminals
-
Repair op en
i
n t
he
w
i
re
s
"-
NO
between
t
ho ECM/PCM IA1S1
Is
the
MIL
on?
/ '
and
t he gauge assembly.
YES
-
Replace the Mil
bulb.
Substitute a
known-good ECMI
PCM and recheck
.
If sympt
oml
1.
Turn the
ignition
switch
OFF.
indication
g
oes
aw
ay.
repl
ace
2.
Inspect the
FI
ElM (15 Al fuse
the
original ECM/
PCM.
in t he under-hood fuse/relav
box.
-
Repair
s
hort
i
n
t
h
e
w
i
re
between
the
FI ElM (15 AI
NO
fuse
and th
e
PGM -FI main
Is the fuse OK?
/'
relav·
YES
-
Replac
e
th
e
FI ElM 115 AI
fuse.
Inspect t he No. 13 FUEL PUM
P
(15 A)
f
use in the u nder-dash
fuse/relay box.
-
Repair
s
ho
r
t
i
n
t he
wire
b etwe en the N
o. 13
FUEL
'"
NO
PUMP '1
5
AI
fus
e and
t
he
Is the fuse OK?
/ '
PGM-A
mai
n
retay.
YES
-
Repl
ace the
N
o
.
13
FUEL
PUMP
115
AI
Iu .
..
ITo
page 11
·871
11-86
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Troubleshooting
