Yamaha YXR70FX, Руководство по обслуживанию

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FI
FUEL INJECTION SYSTEM
Fault code No. 46 Symptom Power supply is not normal.
Diagnostic code No. — —
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Connections
• Main wire harness-ECU coupler • Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler
securely.
Starting the
engine and
operating it at
idle.
2 Faulty battery. • Replace or charge the battery.
Refer to “CHECKING AND
CHARGING THE BATTERY” in
chapter 3.
3 Malfunction in rectifier/regulator • Replace if defective.
Refer to “CHARGING SYSTEM”
in chapter 9.
4 Open or short circuit in wire har-
ness. • Repair or replace if there is an
open or short circuit.
• Between battery lead and main
fuse coupler
(red–red)
• Between main fuse coupler and
ignition fuse
(red–red)
• Between main switch coupler
and ignition fuse
(red/black–red/black)
• Between main switch coupler
and ECU coupler
(brown/red–brown/red)
Fault code No. 50 Symptom Faulty ECU memory. (When this malfunction is detected
in the ECU, the fault code number might not appear on
the meter.)
Diagnostic code No. — —
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Malfunction in ECU. Replace the ECU.
TIP:
Do not perform this procedure with
the main switch turned to “ON”.
Turning the
main switch to
“ON”.