Yamaha YP125R, Service Manual

Page: 461 / 498

IMMOBILIZER SYSTEM
8-64
* Accessory locks mean the seat lock and fuel tank cap.
Code re-registering key registration:
When the immobilizer unit or ECU is replaced, the code re-registering key must be registered to the
unit.
To register a code re-registering key:
1. Turn the main switch to “ON” with the code re-registering key.
TIP
Check that the immobilizer system indicator light comes on for one second, then goes off. When the
immobilizer system indicator light goes off, the code re-registering key has been registered.
2. Check that the engine can be started.
3. Register the standard key, following the instructions in the section below.
Standby mode:
To enable the immobilizer system, turn the ignition key to “OFF”. 30 seconds later, the indicator light
will start flashing continuously in the standby flashing mode pattern for up to 24 hours. After that time,
the indicator light will stop flashing, but the immobilizer system is still enabled.
Parts to be replaced
Key registration re-
quirement
Main switch/immo-
bilizer unit
Standard
key
ECU
Accesso-
ry lock*
and key
Main
switch
Immobiliz-
er unit
Standard key is lost
√
New standard key
All keys have been
lost (including code
re-registering key)
√ √ √ √
Code re-registering
key and standard
keys
ECU is defective
√
Code re-registering
key and standard
keys
Immobilizer unit is
defective
√
Code re-registering
key and standard
keys
Main switch is defec-
tive
√ √ √ √
Code re-registering
key and standard
keys
Accessory lock* is
defective
√
Not required