Yamaha FZ6-SS 2004, Service Manual, Page: 362 / 456

7-21
FUEL INJECTION SYSTEM
FI
Battery positive terminal
!
red / black
Battery positive terminal
!
blue / yellow
1
2
Tester positive probe
!
red
Tester negative probe
!
red / blue
3
4
When the leads are disconnected, the voltage
check by the code No. 09 is impossible.
NOTE:
Fault code No. 43 Symptom The ECU is unable to monitor the battery voltage.
Used diagnostic code No. 09 (fuel system voltage)
Order Inspection operation item and probable
cause Operation item and countermeasure Reinstatement
method
1 Connected condition of connector
Inspect the coupler for any pins that
may have pulled out.
Check the locking condition of the
coupler.
If there is a malfunction, repair it and connect it
securely.
Starting circuit cut-off relay coupler
(fuel injection system relay)
Fuel pump coupler
Injector coupler
ECU coupler
Reinstated by
starting the
engine and
operating it at
idle.
2 Malfunction in ECU Fuel injection system relay is on.
3 Open or short circuit in the wiring har-
ness. Repair or replace if there is an open or short
circuit.
Between starting circuit cut-off relay (fuel injection
system relay), fuel pump, injector (#1
X
#4)
red / blue – red / blue
4 Malfunction or open circuit in fuel injec-
tion system relay Execute the diagnostic mode (code No. 09)
Replace if defective.
1. Disconnect the starting circuit cut-off relay
from the wire harness.
2. Connect the pocket tester (
Ω
1) and battery
(12 V) to the starting circuit cut-off relay termi-
nals as shown.
3. Does the starting circuit cut-off relay have con-
tinuity between red and red / blue?