Immobilizer System Indicator Light Fault Code Indication - Yamaha 2012 TMAX XP500A Service Manual

Fault
Part
code
54 IMMOBILIZER
UNIT
55 IMMOBILIZER
UNIT
56 ECU (engine
control unit)

Immobilizer system indicator light fault code indication

Units of 10: Cycles of on for 1 second and off for 1.5 seconds.
Units of 1: Cycles of on for 0.5 second and off for 0.5 second.
Example: fault code 52
a
b
a. Light on
b. Light off
Symptom
Codes transmitted
between the ECU
(engine control unit)
and the immobilizer
unit do not match.
Key code registra-
tion malfunction.
Unidentified code is
received.
8-83
IMMOBILIZER SYSTEM
Cause
Noise interference or dis-
connected lead/cable.
1. Interference due to
radio wave noise.
2. Disconnected com-
munication harness.
3. Immobilizer unit mal-
function.
4. ECU (engine control
unit) failure.
(The ECU (engine
control unit) or immo-
bilizer unit was
replaced with a used
unit from another
vehicle.)
Same standard key was
attempted to be regis-
tered two consecutive
times.
Noise interference or dis-
connected lead/cable.
Action
1. Register the
code re-register-
ing key.
2. Check the wire
harness and con-
nector.
3. Replace the
main switch/
immobilizer unit.
4. Replace the ECU
(engine control
unit).
Register another
standard key.
1. Check the wire
harness and con-
nector.
2. Replace the
main switch/
immobilizer unit.
3. Replace the ECU
(engine control
unit).