Honda CB900F Service Manual page 100

FUEL SYSTEM (Program m ed Fuel Injection)
PGM-FI M IL 1 BLINK (MAP SENSOR)
Turn the ignition switch OFF.
Disconn ect t he M A P sensor 3P co nnector.
Check for loose or poor co ntact o n the MA P sen-
sor connecto::::r._ -t<-:-""",,,
Connect the MAP sensor connector.
Place the motorcycle on its side stand.
St art the engine and check that the MI L blinks.
No bli nks
Loose or poor contact on the MAP sensor
connector
1 blink
Turn t he ign it io n switch OFF.
Discon nect the MAP senso r 3P co nnector.
Turn the ign it ion switc h ON .
Measu re the vo ltage at the wire harn ess side
connector.
Out of rang e
Open o r short ci rcu it in Yello w/Red wire
Loose or poor co ntact o n th e ECM con nectors
~ (
MAP SENS OR
CONN ECTOR
••
r
Connection: Yellow/Red
1 +1-
Ground H
Standard: 4.75 - 5.25 V
Voltag e ex ists
Measur e the v olt ag e bet wee n t he co nnecto r t er-
mi nals of the w ire harness side.
Out of rang e
Op en or sho rt circu it in Green /Oran ge wire
Loose or poor co ntac t on t he ECM connecto rs
r
Connection: Yellow/Red
Standard: 4.75 - 5.25 V
~ I
MAP SENS OR
CONN ECTOR
1 +1-
Green/Orange H
Voltage exists
5-12