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PGM-FI Main Relay
Description
The PGM-FI
main
relay
actually contains two
individual
relays. This relay
is located at the
passenger side
of
the
cowl. One relay is
energized
whenever the
ignition is on
which supplies the battery
vo
ltage
to the
ECMIPCM
,
power to the
fuel injectors,
and power
for the
second
relay. The
second
relay
is energized
for two
seconds
when
the
ignition
is switched on,
and when the
engine
is running
,
to
supply power
to the
fuel pump.
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PGM-FI
MAIN RELAY
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IN'J~CTOR
FUEL PUMP
Relay Testing
NOTE: If the
engine starts and continues
to run, the
PGM-FI
main
relay
is OK.
1.
Remove the
glove box
and
the passenger's
dash-
board lower
cove
r
(see section 20).
2.
Remove
the
PGM-FI main
relay.
3.
Attach the battery
positive
terminal to
the
No. 2
ter~
minal and
the
banery
negative terminal to the
No.
1
terminal
of
the
PGM~FI
main
relay.
Then
check for
continuity
between the
NO.5
terminal and
No.
4
ter~
minal
of
the PGM-FI main relay.
•
If
there is
continuity, go on to
step 3.
• If
there is no
continuity,
replace
the
PGM~FI
main
relay
and
retest.
No.
1
To
IGN.
1
To GROUND
To
ST.
SWITCH
To ECM/PCM
CONNECTOR
TERMINAL A 16
IFLRI
No
.
2
(A11 and A24,
81 and 89*)
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4
To FUEL PUMP
*:
'98 - 00
models
4.
Attach the battery
positive
terminal
to
the
NO.5 ter-
minal
and
the
battery
negative terminal to the No
.3
terminal of the PGM-FI main
relay.
Then
check
that
there is
continuity
between the No.7 terminal and
No.6
terminal of the
PGM -FI main relay
.
•
If there
is
continuity,
go on
to step
4.
•
If there is no
continuity
I
replace the PGM-FI main
relay
and
retest.
5.
Anach the battery positive terminal to
the
No.6
ter-
minal
and
the battery negative terminal
to
the No
.
1
terminal of the PGM-FI
main
relay
.
Then
check
that
there is continuity
between the NO
.
5 terminal
and
No.4 terminal
of
the PGM -FI main
relay.
•
If
there is
continuity,
the PGM-FI main relay
is OK.
•
If there is no
continuity,
replace
the PGM-FI
main
relay and retest.
(cont'd)
11-187
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Troubleshooting
