Yamaha V Star 950 Service Manual page 346

Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Order
5
6
7
43
Incorrect voltage supplied to the fuel injector and fuel pump
Engine startup: Possible
Riding: Possible
50
The relay turns On or Off 5 times per second.
The engine warning light flashes according to the On/Off switching.
Make sure that engine warning light flashes according to the On/Off
switching of the relay.
Item/components and
probable cause
Continuity of wire har-
ness between the bat-
tery and ECU coupler
Fuel injection system
relay malfunction
ECU malfunction
7-61
FUEL INJECTION SYSTEM
Check or mainte-
nance job
Open or short circuit →
Replace the wire har-
ness.
Red–Red
Red/Blue–Red/Blue
Check in the diagnos-
tic mode (Code No.
50).
No operation sound of
fuel injection system
relay is heard. →
Replace the relay unit.
Replace the ECU.
Sensor inspection
procedure
Start and idle the
engine for approxi-
mately 5 seconds.