Yamaha TMAX 2020, Service Manual

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8-78
SMART KEY SYSTEM
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 system indicator light “ ”.
TIP
The smart key system indicator light “ ” comes on for 1 second when the ON/start switch is pushed. If
one of the following malfunctions is detected, the indicator light starts flashing.
Item Flash pattern
Flashing time/
number of flashes
Malfunction and
check point
Low voltage of smart
key button cell battery
a. LED on
b. LED off
20 (seconds) Replace the button
cell battery of the
smart key.
Refer to “SMART
KEY SYSTEM” on
page 8-67.
Vehicle power off ver-
ification error
a. LED on
b. LED off
10 (seconds) The smart key cannot
be recognized.
Check that there are
no sources of strong
electromagnetic
waves in the vicinity,
the smart key is not
lost, and the battery is
not discharged.
Running detection er-
ror*
a. LED on
b. LED off
Flashes continuously
until the error is re-
solved. The smart key cannot
be recognized.
Check that there are
no sources of strong
electromagnetic
waves in the vicinity,
the smart key is not
lost, and the battery is
not discharged.
• Steering lock is
stuck
• Steering lock cannot
be released
a. LED on
b. LED off
20 (seconds)/
10 times Check whether the
steering lock is stuck.
Steering lock or cen-
terstand lock commu-
nication error
a. LED on
b. LED off
20 (seconds)/flashes
2 times in a repeating
cycle Check the wire har-
ness.
0.5 (s)
0.5 (s)
a
b
0.15 (s)
0.15 (s)
a
b
0.15 (s)
0.15 (s)
a
b
0.5 (s)
1.5 (s)
a
b
a
b
0.3 (s)
0.3 (s)
1.0 (s)