Additional Key cannot be Registered: Procedure

CHECK FOR DTC
1. Check for DTCs. Refer to DTC CHECK / CLEAR [03/2012 - ] .
  NOTE:
  If a malfunction occurs, do not remove/install the vehicle auxiliary battery before checking for DTCs.
  
  OK
  
  DTC is not output.
NG → See step 5

OK: Go to next step
CHECK STEERING LOCK SYSTEM
1. Check that the steering wheel unlocks.
  OK
  
  The steering wheel unlocks.
  
  HINT:
  
  Check that the communication between the steering lock ECU (steering lock actuator assembly) and certification ECU (smart key ECU assembly) is normal.
NG → See step 6

OK: Go to next step
REGISTRATION
1. Using other unregistered electrical key transmitter sub-assemblies, perform the additional registration procedure.
  OK
  
  Additional registration can be completed.
NG → See step 4

OK → See step 7
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
1. Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies to the new ECU.
  HINT:
  - For replacement. Refer to REMOVAL [03/2012 - ] .
  - For registration. Refer to REGISTRATION [03/2012 - ] .
  OK
  
  The key ID can be registered.
NG → See step 8

OK → END (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] WAS DEFECTIVE)
GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]
GO TO STEERING LOCK SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]
REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY. Refer to REGISTRATION [03/2012 - ]
GO TO New key cannot be Registered. Refer to New Key cannot be Registered