EDC/MEMS Alarm Interaction (page 2 of 2)

EKA requires the entry of a four number code in the CCU. The code is randomly generated and is not connected with the VIN. Each number in the code can be between 1 and 15. The EKA code is entered by turning the key in the drivers door lock to the lock and unlock positions in accordance with the code. If the EKA code, for example is 3, 6, 2 and 11, the following procedure would be required to fully unlock and disarm the vehicle:

NOTE: When entering the code, unlocking and locking will operate as normal on the first turn of the key. The procedure starts with the vehicle in the locked condition and the first turn to the unlock position initiates the EKA state.

• Turn the key once to the unlock position and wait for a minimum of five minutes before proceeding to enter the EKA code
• Turn the key to the unlock position three times
• Turn the key to the lock position six times
• Turn the key to the unlock position two times
• Turn the key to the lock position eleven times.
• Finally, turn the key to the unlock position once.

If the code is entered correctly the CCU will unlock all doors, fully disarm the alarm and mobilize the ignition and crank circuits. If the code is entered incorrectly the vehicle will remain in the EKA state. Three incorrect attempts at code entry will result in the CCU initializing a thirty minute time-out period. The CCU will fail to respond to any further code entry attempt during this period.

If a code is entered incorrectly, the system can be reset by opening and closing the drivers door or turning the ignition on and off. An aborted attempt will not count on the CCU’s tally of incorrect attempts.