Honda Prelude 1993 Service Manual page 366

2 .
?
Testing
E@E
Do not smoke during the test. Ke€p opon
flame away from your work area,
lf you suspect a problem with the fuel pump, check that
the tuel pump actually runs; when it is ON, you will hear
some noise if you hold your ea. near the tuel till port with
the fuel fill cap removed. The fuel pump should run for
two seconds when the ignition switch is first turned on.
lf there is no noise at the fuel fill port, check as follows;
1. Remove the access Danel in trunK,
CAUTION: B€ sure to turn tha ignition switch OFF
betore disconnecting tho wiles.
Disconnect the 2P connector-
Disconnect the PGM-Ft main relay conneclor and
connect the BLK/YEL @ wire and yEL @ wirc with
a jumper wire.
BLK/
YEL €)
YEL G)
'WIRE
\ \<
pcm-H
..-\
MA|N
JUMPER
Check that battery voltage is available at the fuel
pump connector when the ignition switch is turned
ON (positive probe to the yEL wire, negative probe
to the BLK wire).
Y E L { + }
lf battery voltage is available, replace the fuel
D U M O .
lf there is no voltage, check the fuel pump grouno
and wire harness (see page 1j- 128).
Replacement
@@l
Do not smoke whilo wolking on fuet sys-
tam. Ke€p open flsmes away ttom yout wotk area.
1 . R e l i e v e f u e l p r e s s u r e ( s e e p a g e 1 1 - 1 1 4 ) .
2. Remove the access panel in t.unk.
3.
Disconnect the 2P connector Jrom the tuel pump.
4. Remove the fuel pump mounting nuts.
5. Remove the tuel pump from the fuel tank.
6 N . m
(O.6 kg-m,
4 tb-ftl
FUEL PUMP UNIT
I
28 N.m (2.8 kg-m,
20 tb-ftI
11-125