Honda CB900F 919 (2001) [90/432] Washer
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Honda CB900F 919 (2001) [90/432] Washer

Honda CB900F 919 (2001) [90/432] Washer
FUEL SYSTEM
(Programmed
Fuel Injection)
Do
not
apply
commercially
available
carburetor
cleaners
to
the inside
of
the
throttle
bore,
which
is
coated
with
molybdenum
.
Do
not
snap the
throttle
valve
from
full
open to full close after
the
throttle
cable has been
removed
. It
may
cause
incorrect
idle
operation.
Seal
the
cylinder
head intake ports
with
tape or a clean
cloth
to
keep
dirt
and
debris
from
entering
th e
intake
ports
after the
throttle
body
has been
removed
.
Do
not
apply excessive force
to
the
fuel pipe on
the
throttle
body
while
removing
or
installing
the
throttle
body
.
Do
not
damage
the
throttle
body
. It
may
cause
incorrect
throttle
and
idle
valve
synchronization.
Prevent
dirt
and
debris
from
entering
the
throttle
bore,
fue
l
tube
and
return
tube,
clean
them
using
compressed
air.
The
throttle
body
is
factory
pre-set. Do
not
disassemble
in a
way
other
than
shown
in
this
manual.
Do
not
loosen or
tighten
the
white
painted
bolts
and
screws
of
the
throttle
body
.
Loosening
or
tightening
them
can cause
throttle
and idle
valve
synchronization
failure.
Do not push
the
fuel
pump
base
under
the
fuel
tank
when
the
fuel
tank
is sto red.
Always replace
the
packing
when
the
fuel
pump
is
removed
.
The
programmed
fuel
injection
system
is
equipped
with
the
Self
-Diagnostic
System
described
on
page
5-6. If
the
malfunc
-
tion
indicator
lamp
(MIl)
blinks,
follow
the
Self
-Diagnostic
Procedures to
remedy
the
problem
.
When checking the PGM-FI,
always
follow
the steps in the
troubleshooting
flow
chart (page 5-10).
The PGM-FI system is
pro
vided
with
fail-safe
function
to
secure a
minimum
running
capability
even
when
there
is
any
trou-
ble in the system.
When
any
abnormality
is
detected
by
the
self
-diagnosis
function,
running
capability
is secu red by mak-
ing use of the
numerical
values
of
a
situation
preset in advance in
the
simula
ted
program
map.
It
must
be
remembered,
however,
that
when
any
abnormality
is detected in
four
injectors
and/or
the
ignition
and
cam
pulse
generator
,
the
fail safe
function stops the
engine
from
the
standpoint
of
protecting
it.
For PGM-FI system
location,
see
page
5-4.
A
faulty
PGM-FI
system
is
often
related to
poorly
connected
or
corroded
connecto
rs. Check
those
connections
before
proceed ing.
For fuel reserve
sensor
inspection
, see section 19.
The vehicle speed
sensor
sends
digital
pulse
signals
to
the
ECM (PGM-FI
unit
)
for
computation.
For
vehicle
speed sensor
inspection, see section 19.
When
disassembling
the
programmed
fuel
inject
ion parts, note
the
location
of
the
O-rings. Replace
them
with
new
ones
upon reassembly.
Before
disconnecting
the
fuel
tube,
release
the
fuel
pressure by
loosening
the
fuel
tube
banjo
bolt
at
the
fuel
tank
.
Always
replace
the
sealing
washers
when
the
fuel
tube
banjo
bolt
is
removed
or
loosened
.
Use a digital
tester
for
PGM-FI
system
inspection.
SPECIFICATIONS
ITEM
SPECIFICATIONS
Throttle
body
identification
Except
California
type
GQ34C
number
California
type
GQ34B
Starter valve
vacuum
difference
2664 Pa (20
mm
Hg)
Base
throttle
valve
for
synchronization
No.2
Idle speed
1,200
± 100
min
" (rpm)
Throttle
grip
free play
2 - 4
mm
11/16- 3/16 in)
Intake air
temperature
sensor
resistance (at 20·C/68"F)
1 - 4 kQ
Engine coolant temperature sensor resistance (at 20°C/68"F) 2.3 - 2.6 kQ
Fuel injector resistance (at
20T
/6WF)
11.1-12
.3Q
PAIRsolenoid valve resistance (at 20'C/68'F) 20 - 24 Q
Cam pulse generator peak voltage (at 20'C/68'F) 0.7 V
minimum
Ignition pulse
generator
peak voltage (at 20'C/68'F) 0.7 V
minimum
Manifo
ld absolute pressure at
idle
200 - 250
mm
Hg
Fuel pressure at
idle
343 kPa 13.5
kgf
/cm
', 50 psi)
Fuel
pump
flow
(at 12 V) 256 em" (8.7 US OZ, 9.0
Imp
oz)
minimum
/10
seconds
5-2

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