Honda CBR600F4i Series Service Manual page 115

FUEL SYSTEM (Programmed Fuel Injection)
Do not apply commercially av11 il ab le c11rh11rP.tnr cleaners to the inside uf Lhe throttle bore, which is coated w ith molybde-
num.
Do not snap the throttle vc1lw from fully open to fully close after the throttle cable has been remnved; it may cause incor-
rect idle operatron.
Seal the cylinder head intake port. s w ith tape or a clean cloth to kP.e p d irt and debris from !mtering the intake ports after the
throttle body hc1s 1.,.,.,11 nmroved.
Do not apply exr.e/\/\ive force to the fuel pipe on the th101tll! IJody while removing or installing the throttle body.
Do not damage tho throttle body. It may cause incorrer.t throttle and idle valve sy11chronization.
Prevent dirt c111d debris from entering the throttle bore, fuel hose and return hMe, clean them using comprl!ssed c1ir.
The throttle body is factory pre-set. Do not dis.,ssemble in
a
way other than shown in this manual.
Do not loosen or tighten the white parntec1 holt/\ and sc rews of the thrultle body. loosening or tightening them can cause
th , 0111 .. a11d idle va lve synchronization fa ilure.
Do nnt push the fuel pump base under th!! fuel tank whe n the fuel tank is stored.
Always replace the packing when the fuel pump is removed.
The programmed fuel injection sy:aem is equipped with the Self-Di agnostic System d!!st:ribed on page 5-6. If the malfunc
tion indicator lamp (Mil) 1Jli11ks, follow the Self-Diagnostic Procedu res to remedy the problem.
When ch ecking the PGM-FI, 11lw11ys follow the steps in th1:1 troubleshootin g flow chart (page 5-10).
The PGM-FI system is provided with fail -safe functio n to secu re a minimum ru nning capability even when there is trouble
in the system. Wh1!11 any abnormality is detected by the self-diagnosis f11nr.tion, running capability is secured by making
use of the numenr.11I values of
11
situation presat in advance in the simul ated program mep. It m11st he remembered, how-
ever, that when any abnormality is detected
in
fo11r injectors and/or the iynition and cam pulse generator. the fail safe funr.-
tion stops th1:1 en~ine to avoid eng ine damage.
For 1-'GM-rl system locat ion. see paye 5-4.
A faulty PGM Fl system is often re l11tP.d to poorly connected or co rrod ed connectors. Check those connP.ctions before pro-
ce1:1diny.
For fuel reserve sensor insp .. ction, see secti on 19.
The vehicle speed sensor sP.ncls dioital pulse signa ls to the ECM (PGM -FI unitl for computation. ror vehicle speed sensor
inspection, see sect ion 19.
When disassembling th!! programmed fue l injection parts, note the lor.atinn of the 0-rings. Rep lace them w ith new ones
upon reassembly.
Before disconnecting the fuel hoses, releasP. the fuel pressure by looseninA the fuel hose banjo bolt at the fuel tank.
Always replace the sealing washers when the fuel hose banJo holt is removed or loos1:111ed.
Use
a
d1 g1t11l IP.ster for PGM-FI system i nspection.
SPECIFICATIONS
ITEM
Throttle body ident1 f1c11t ion
I
Except California type
number
Ca lifornia typ1:1
!----------- ---
Starter valve v11r.1111m difference
Base throttle
v11lve
for synchroni2atio11
Idle speP.r!
Throttle grip free play
ln•ake
air temperatuI!! sensor resistance {at 20"C/68.Fl
SPECI FICATIONS
GO~OC
G090B
-
20 mm Hg
No.1
1,3
00
:t
100 rpm
- -- -
2 - 6
I
11111
(1/16 - 1/4 in)
1-4kfl
.
-
.
---- --------
- -
Engine coolant te111pt1rature sensor resistance {at 20'C/68'Fl
- - I - -
FL1el injector , 1:1sist,rnce (at 20"C/68"F)
--- ------
PA IR solenoid vc1 lvt1 resistance (at 2o·c16B'F)
-----------~-
Cam pulse y1:1111:1rator peak voltage lat 2o·c168"Fl 0.
Ignition pulse generator peak voltage {at 2o·c1ss·F) o.
- - ---11---- - - - -
2.3 - 2.6 k.<1
1.1-12.30
20- 24
n
7 Vminimum
7 V minimum
Ma11ifuld absolute pressure at idle 150 -250 mm Hg
e---
-------------+-----------
Fu
tt
1 pressure at idle 343 kPa (3.5 kgf/cm
2 ,
50 psi)
Fuel pump flow tat 12 VI 188 t:P1 2
(6.4
US oz, 6 .6 Imp oz) minim um/10 seconds
5-2