Honda CB900F Service Manual page 119

Disconnect the ECM con nectors.
Connect the test harness to the wire harness
connectors .
FUEL SYSTEM (Programmed Fuel Injection)
ECU TEST HARN ESS
Measure the resistance at the test harness
terminals .
e
.-----(Q}----, E9
(Ii!l " " ,; "- " ,, "' "
,0
Conn ection: A2 I-I - 82
(+)
St andar d:
9 - 15
1 20'C/6S 'F)
Normal
Check for continuity between the test harness
terminal and gro und.
Out of range
Conti nuity
• Open circuit in BlackIW hite and/o r Pink/ Blue wire
• Short circu it in Pink/ Blue wire
[==1
" " " " " " " " " " "'J
Connection: A2 - Ground
Standard: No co nt inuity
No continu ity
Replace the ECM with a new one, and inspect it
again
5-3 1