Honda CB900F Service Manual page 129

FUEL SYST EM (Programmed Fuel Injection)
Crank t he eng ine with th e starter m oto r, and
meas ure the ign ition pulse ge nerato r peak
vo ltage at the ig nition pulse ge nerato r 2P
connecto r.
Connection: Yellow
(+ ) -
Yellow/White
l-I
Standard: 0.7 V minimum (20"C/ 68"F)
No rm al
Conn ect the ignition pulse generato r 2P
con nector.
Discon nect the ECM connectors.
Connect the t est harn ess t o ECM co nnect o rs.
Crank the engine w it h th e sta rter mot or, an d
measure the ig nition pulse genera tor peak volt-
age at the test harn ess te rminals .
Out of ran ge
Out of ran ge
• Faulty ignition pul se ge ne rat o r
Op en ci rcuit in White/Yellow w ire
Op en circuit in Yell ow wi re
Cii
It
H .. .. -, .. - . )
rt
~_L~'
f . . . .
m
Qj- .. ---,,---. . .
It ,. . . . . %".
Connection: Bll
(+) -
Ground
l-I
Sta nda rd: 0.7 V minimum (20"C/6S"F)
No rmal
Repl ace th e ECM w it h a new one, and inspect it
aga in.
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