Yamaha 2005 BT1100 Supplementary Service Manual page 70

SELF-DIAGNOSIS ERROR CODE INDICATION
When the system failure occurred, the error code number is indicated in the immobilizer system indicator
light blinks at the same time. The pattern of blinking also shows the error code.
Error
Detection
code
51 IMMOBILIZER
UNIT
52 IMMOBILIZER
UNIT
53 IMMOBILIZER
UNIT
54 IMMOBILIZER
UNIT
55 IMMOBILIZER
UNIT
56 ECU IGNITER
UNIT
Immobilizer system indicator light error code indication
Digit of 10: Cycles of 1 sec. ON and 1.5 sec. OFF.
Digit of 1: Cycles of 0.5 sec. ON and 0.5 sec. OFF.
<Example> 52
Light ON
Light OFF
Symptoms
Cannot transmit code
between the key and
immobilizer unit.
Codes do not match
between the key and
immobilizer unit.
Cannot transmit code be-
tween the ignitor unit and
immobilizer unit.
Codes do not match be-
tween ignitor unit and im-
mobilizer unit.
Key code registration error. Same standard key was attempted
Underfinition code is re-
ceived.
IMMOBILIZER SYSTEM
Trouble
1) Objects that may keep off radio
waves exist around the keys and
antennas.
2) Immobilizer unit failure.
3) Key failure.
1) Disturbed by other transponder.
Failed to verify continually for ten
times.
2) Unregistered sub key was used.
Noise interference or disconnected
lead/cable.
1) Obstruction due to radio wave
noise.
2) Error by disconnection of the
communication harness.
3) Immobilizer unit failure.
4) Ignitor unit failure.
Noise interference or disconnected
lead/cable.
1) Obstruction due to radio wave
noise.
2) Immobilizer unit failure.
3) Ignitor unit failure (When the
used parts from other vehicles
are used, the code re-registering
key ID is not registered to the
ECU.)
to continuously two times register.
Noise interference or disconnected
lead/cable.
62
ELEC
Measures
1) Keep clear of magnets,
metals and other keys
from the surroundings of
keys and antennas.
2) Replace the immobilizer
unit.
3) Replace the key.
1) Place the immobilizer
unit away more than 50
mm from the transpon-
der of other vehicle.
2) Register the standard
key.
1) Check the wire harness
and connector.
2) Replace the immobilizer
unit.
3) Replace the ignitor unit.
1) Register the code re-
registering key ID.
2) Replace the immobilizer
unit.
3) Replace the ignitor unit.
Prepare the new standard
key and register it.
1) Check the wire harness
and connector.
2) Replace the immobilizer
unit.
3) Replace the ignitor unit.