Ford Corsar Repair Manual page 357

TROUBLE DIAGNOSES
Diagnostic Procedure 36
FUEL PUMP (Not self-diagnostic item)
INSPECTION START
l
INSPECTION END
CHECK OVERALL FUNCTION.
0.K.
,
1) Turn ignition switch "ON".
2) Listen to fuel pump operating
sound.
Fuel p u m p should operate
for 5 seconds after ignition
s w i t c h i s turned "ON".
Engine stationary.
SEF9801
l
(VI
L
- 0
@
m
[RI
\
P - .
- -
Continuity should exist.
El
.
.
L
-
a
J
CHECK COMPONENTS
(Fuel pump and fuel pump
nent(s).
relay).
I 6
Refer to "Electrical Components
Inspection".
(See page ES-2
1412
16)
104
Check E.C.U. pin terminals for
damage or the connection of
E.C.U. harness connector.
. .
- 0
1""
'
Check the following:
Harness Connectors
10A fuse
Harness continuity between
fuse and fuel pump relay
If N.G., repair harness or con-
nectors.
CHECK POWER SUPPLY.
1) Turn ignition switch "OFFsr.
2) Disconnect fuel pump relay.
3) Turn ignition switch "ON".
4) Check voltage between termi-
nals
@, @
and ground.
Voltage: Battery voltage
N.G.
,
.
.
CHECK GROUND CIRCUIT.
1) Turn ignition switch "OFF".
2) Disconnect fuel pump harness
connector.
3) Check harness continuity
between Fuel Pump terminal
@and body ground, Fuel Pump
terminal
@
and Fuel Pump
Relay terminal
@ .
Continuity should exist.
N.G.
,
Check the following:
S.M.J. connectors
Harness connectors
fuel pump and body ground
Harness continuity between
fuel pump and fuel pump relay
If N.G., repair harness or con-
nectors.
. .
Check the following:
Harness connectors
Harness continuity between
E.C.U. and fuel pump relay
If N.G., repair harness or con-
nectors.
CHECK OUTPUT SIGNAL CIR-
CUIT.
1) Disconnect E.C.V. harness
connector.
2) Check harness continuity
between E.C.U. terminal
and Fuel Pump Relay terminal
0.
N.G.