Registration of additional keys without using the scan tool

Operate two registered ignition keys by the following procedure, call additional registration mode for the immobilizer-ECU, then register an additional ignition key by operating it. Additional ignition keys can be registered without using the MUT-II by operating two ignition keys that already have been registered to the vehicle and operating an additional key to be registered. (A maximum of eight ignition keys can be registered.)

1. The ignition switch is "ON" by using he first key (KEY A) which has already been registered to the vehicle.
2. If the first key (KEY A) is correct, the immobilizer-ECU begins the condition ow warning the second key (KEY B) which has already been registered to the vehicle. The ignition switch has been on the "ON" position for longer than 5 seconds so that enters the condition of waiting the second key (KEY B).
3. After the ignition switch is "LOCK" (OFF), it is "ON" by the second key (EY B) which has already been registered to the vehicle.

   The second key (KEY B) must be turned on within 7 seconds of removing the first key.

4. After approximately 10 seconds the "SECURITY" indicator light should flash, and then additional registration mode is entered.
5. Check the "SECURITY" indicator light flashes, and then remove the second registered key (key B).
6. Insert the third ignition key, and turn it to the ON position.
7. The immobilizer-ECU identifies the new key to accept or reject it, and operates the "SECURITY" indicator. See SECURITY INDICATOR LIGHT OPERATION AND TIMING TABLE .
   Fig 1: Checking Security Indicator Light

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   SECURITY INDICATOR LIGHT OPERATION AND TIMING TABLE
   
   

   The new key is:	Registration is:	"SECURITY" indicator:
   		Operation	Timing
   Not registered yet	Accepted	Illuminates for three seconds	In approximately three seconds after the ignition key(s) have been registered
   Already registered	Rejected	Illuminates for three seconds	In approximately three seconds after the ECU judges that the keys have been registered
   Read error	Rejected	Extinguished	After the ECU detects a read error

8. If a new ignition key is registered further, repeat steps  1 to  7 above.

   A maximum of eight ignition keys can be registered to one vehicle (If you attempt to register the ninth key, the immobilizer-ECU rejects the key). If any of the following conditions are satisfied, the additional key registration mode will terminate:

   The ignition switch has been on for more than 30 seconds. After the ignition key has been turned to the "LOCK" (OFF), the engine control relay is turned off.

   The scan tool has started communicating with vehicle systems.

9. After the registration mode has terminated, the additionally registered key(s) should allow you to start the engine.