Yamaha MBK X-MAX 300 2017 Service Manual page 422

EAS31534
SMART KEY SYSTEM SELF-DIAGNOSIS
The smart key system is equipped with a self-diagnostic function. If a malfunction is detected in the sys-
tem, the malfunction will be indicated by the flash pattern of the smart key indicator light " ".
TIP
The smart key indicator light " " comes on for about 2 seconds when the vehicle power is on. If one of
the following malfunctions is detected, the indicator light starts flashing.
Item
Low voltage of smart
key button cell battery
Vehicle power off verifi-
cation error
Running detection er-
ror*
• ECU communication
error
• Data error
• ECU malfunction
* The running detection error
If the smart key is dropped or can no longer be recognized while the vehicle is traveling. If the vehicle
travels while the smart key cannot be recognized, the smart key indicator light " " flashes in 0.15-
second intervals.
The vehicle can be ridden, but the vehicle power cannot be turned off.
Although a forced shutdown can be performed to turn off the vehicle power (the main switch is
pushed for 4 times within 2 seconds while the smart key indicator light " " is flashing in 0.15-second
intervals), the vehicle power cannot be turned back on.
Flash pattern
0.5 (s)
a
b
0.5 (s)
a.LED on
b.LED off
0.15 (s)
a
b
0.15 (s)
a.LED on
b.LED off
0.15 (s)
a
b
0.15 (s)
a.LED on
b.LED off
0.3 (s)
a
b
0.3 (s) 1.0 (s)
a.LED on
b.LED off
8-117
SMART KEY SYSTEM
Flashing time/number
of flashes
20 (seconds)
30 (seconds)
Flashes continuously
until the error is re-
solved.
Flashes continuously
until the error is re-
solved./flashes 4 times
in a repeating cycle.
Malfunction and check
point
Replace the button cell
battery of the smart key.
Refer to "SMART KEY
SYSTEM" on page
8-111.
The smart key cannot
be recognized.
Check that there are no
sources of strong elec-
tromagnetic waves in
the vicinity, the smart
key is not lost, and the
battery is not dis-
charged.
The smart key cannot
be recognized.
Check that there are no
sources of strong elec-
tromagnetic waves in
the vicinity, the smart
key is not lost, and the
battery is not dis-
charged.
Check the wire harness.
Check the ECU.
Check the smart key
unit.