Yamaha YZF-R6T Supplementary Service Manual page 459

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
Fault code No. 43
Used diagnostic code No. 09 (fuel system voltage)
Inspection operation item and probable
cause
Malfunction in ECU
Open or short circuit in the wiring harness.
Malfunction or open circuit in fuel injection
system relay
Connected condition of connector
Inspect the coupler for any pins that may
have pulled out.
Check the locking condition of the coupler.
email: info@motomatrix.co.uk
FUEL INJECTION SYSTEM
Symptom The ECU is unable to monitor the battery voltage.
Operation item and countermeasure
Fuel injection system relay is on.
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
Replace if defective.
1. Disconnect the starting circuit cut-off relay
from the wire harness.
2. Connect the pocket tester (Ω
(12 V) to the starting circuit cut-off relay termi-
nals as shown.
Battery positive terminal ! red / black
Battery positive terminal ! light green
Tester positive probe ! red
Tester negative probe ! red / blue
3. Does the starting circuit cut-off relay have con-
tinuity between red and red / blue?
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
1) and battery
3
7-23
FI
Reinstatement
method
Reinstated by
starting the engine
and operating it at
idle.
1
2
4