Yamaha MBK X-MAX 300 2017 Service Manual page 372

Fault code No.
Item
4 Delete the fault code and check
that the engine trouble warning
light goes off.
Fault code No. P1601
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Tool display
Procedure
Probable cause of malfunc-
Item
tion and check
1 Connection of sidestand switch
coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
2 Connection of ECU coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
3 Connection of main switch cou-
pler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
P0657
Fuel system voltage: incorrect voltage supplied to the fuel injector
and fuel pump.
Confirm that the fault code has
a condition of "Recover" using
the Yamaha diagnostic tool, and
then delete the fault code.
P1601
No normal signals are received from the sidestand switch.
Sidestand switch: open or short circuit detected.
Unable to start engine
Unable to drive vehicle
20
Sidestand switch
• "ON" (sidestand retracted)
• "OFF" (sidestand extended)
Extend and retract the sidestand.
Maintenance job
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
8-67
FUEL INJECTION SYSTEM
Confirmation of service com-
Turn the main switch to "ON",
and then extend and retract the
sidestand.
Check the condition of the fault
code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is "Recover" → Go to
item 7 and finish the service.
Condition is "Malfunction" → Go
to item 2.
Turn the main switch to "ON",
and then extend and retract the
sidestand.
Check the condition of the fault
code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is "Recover" → Go to
item 7 and finish the service.
Condition is "Malfunction" → Go
to item 3.
Turn the main switch to "ON",
and then extend and retract the
sidestand.
Check the condition of the fault
code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is "Recover" → Go to
item 7 and finish the service.
Condition is "Malfunction" → Go
to item 4.
pletion