Key Code Registration - Yamaha 2004 YP400 Service Manual

KEY CODE REGISTRATION

Code registration of the code re-registering key or standard keys may be required when parts are
replaced or a standard key is lost.
NOTE:
Each standard key is registered during production, therefore, registering the keys at purchase is not
necessary.
Code re-registering key registration:
When the immobilizer unit or ECU is replaced, the code re-registering key must be re-registered.
To register a code re-registering key:
1. Turn the main switch to "ON" with the code re-registering key.
NOTE:
Check that the immobilizer system indicator light comes on for 1 second, then goes off. When the
indicator light goes off, the code re-registering key has been registered.
2. Check that the engine can be started.
3. Register the standard keys. Refer to "Standard key registration:".
Standard key registration:
A standard key should be registered or the other standard key should be re-registered when a reg-
istered standard key has been lost. The standard keys must be re-registered when the immobilizer
unit or ECU has been replaced and the code re-registering key has been re-registered.
NOTE:
Do not start the engine with a standard key that has not been registered.
If the main switch is turned to "ON" with a standard key that has not been registered, the immobilizer
system indicator light flashes to indicate malfunction code 52. (Refer to "SELF-DIAGNOSIS MAL-
FUNCTION CODES".)
1. Check that the immobilizer system indicator light flashes to indicate the standby mode. To acti-
vate the standby mode, turn the main switch to "OFF". The standby mode will be activated after
30 seconds. The indicator light stops flashing after 24 hours and the standby mode is deacti-
vated.
Main
switch
Standby mode
LED
2. Using the code re-registering key, turn the main switch to "ON", then to "OFF", and then remove
the key within 5 seconds.
IMMOBILIZER SYSTEM
ON
OFF
On
Off
8 - 52
30 s 24 h
0.05 s
2.45 s
– +
ELEC