Yamaha 2007 XP500 Service Manual page 371

Fault code No. 46
Diagnostic monitoring
code No.
Order Item/components and probable cause
1 Connected state of connector.
Main wire harness ECU (engine)
G
coupler
2 Faulty battery
3 The malfunction of the rectifier/regulator
4 Open or short circuit in wire harness.
Fault code No. 50
Diagnostic code No.
Order Item/components and probable cause
1 Malfunction in ECU (engine)
Symptom Power supply to the FI system relay is not normal.
— —
Faulty ECU (engine) memory. (When this malfunction is
Symptom detected in the ECU (engine), the fault code number might not
appear on the meter.)
— —
FUEL INJECTION SYSTEM
Check or maintenance job
Check the coupler for any pins
G
that may have pulled out.
Check the locking condition of
G
the coupler.
If there is a malfunction, repair it
G
and connect it securely.
Replace or change the battery
G
Refer to "CHECKING
CHARGING THE BATTERY" on
page 8-107.
Replace if defective.
G
Refer to "CHARGING SYSTEM"
on page 8-15.
Repair or replace if there is an
G
open or short circuit.
Between battery terminal and
G
main switch coupler
(Red–Red)
Between main switch coupler
G
and fuse box coupler
(Brown/Blue–Brown/Blue)
Between fuse box coupler and
G
ECU (engine) coupler
(Red/White–Red/White)
Check or maintenance job
Replace the ECU (engine).
8-56
Reinstatement
method
Starting the
engine and oper-
ating it at idle.
AND
Reinstatement
method
Turning the main
switch ON