Self-Diagnosis Malfunction Codes - Yamaha XT660R Service Manual

SELF-DIAGNOSIS MALFUNCTION CODES

When a system malfunction occurs, the malfunction code number is displayed on the multifunction
display and is indicated by the immobilizer system indicator light flash patterns.
Malfunction
Part
code
Immobilizer unit
51
Immobilizer unit
52
Immobilizer unit
53
Immobilizer unit
54
Immobilizer unit
55
ECU
56
Immobilizer system indicator light malfunction code indication
Digits of 10: on for 1 second and off for 1.5 seconds.
Digits of 1: on for 0.5 second and off for 0.5 second.
Example: multifunction code 52
Light on
Light off
IMMOBILIZER SYSTEM
Symptom
Code cannot be transmitted
between the key and immo-
bilizer unit.
Codes transmitted between
the key and immobilizer unit
do not match.
Code cannot be transmitted
between the ECU and
immobilizer unit.
Codes transmitted between
ECU and immobilizer unit
do not match.
Key code registration mal-
function
Unidentified code is
received.
8 - 57
Cause
1) Objects that interrupt radio
waves exist around the keys
or antennas.
2) Immobilizer unit malfunction
3) Key malfunction
1) Signal received from other
transponder (failed to recog-
nize code after ten consecu-
tive attempts).
2) Signal received from unregis-
tered standard key.
1) Noise interference or discon-
nected lead/cable.
2) Obstruction due to radio wave
noise.
3) Disconnected communication
harness.
4) Immobilizer unit malfunction
5) ECU malfunction
1) Noise interference or discon-
nected lead/cable.
2) Obstruction due to radio wave
noise.
3) Immobilizer unit malfunction
4) ECU malfunction
(When used parts from other
motorcycles are used, the
code re-registering key is not
registered in the ECU.)
Same standard key was
attempted to be registered two
consecutive times.
Noise interference or discon-
nected lead/cable.
– +
ELEC
Action
1) Keep magnets, metal,
and other immobilizer
system keys away from
the keys and antennas.
2) Replace the main
switch/immobilizer unit.
3) Replace the key.
1) Place the immobilizer
unit at least 50 mm
away from the transpon-
der of other motorcy-
cles.
2) Register the standard
key.
1) Check the wire harness
and connector.
2) Replace the main
switch/immobilizer unit.
3) Replace the ECU.
1) Register the code re-
registering key.
2) Replace the main
switch/immobilizer unit.
3) Replace the ECU.
Register a new standard
key.
1) Check the wire harness
and connector.
2) Replace the main
switch/immobilizer unit.
3) Replace the ECU.