New Key cannot be Registered: Procedure

1. Check for DTCs. Refer to DTC CHECK / CLEAR .
   NOTE:

   If a malfunction occurs, do not remove/install the vehicle battery before checking for DTCs.

   OK

   DTCs are not output.

NG → See step   17 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Smart Key / Utility / Data List.
   SMART KEY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Number of registered codes	Number of registered electrical key transmitter sub-assembly	0 - 7	-

   HINT: 

   Immediately after replacing the certification ECU (smart key ECU assembly), the Techstream item "Number of registered codes" should change to "0". If this item does not change to "0", the certification ECU (smart key ECU assembly) may be registered to another vehicle. A certification ECU (smart key ECU assembly) which is registered to another vehicle cannot be used.

NG → See step   18 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Smart Key / Utility / Operation History.
5. Check the freeze frame data and follow the instructions in the step column of the table below.
   CERTIFICATION ECU LOG OF ID CODE REGISTRATION
   
   

   Parameter Name	Detection Condition	Trouble Area	Step
   Failed Registration Mode	A registration request was sent while in another mode. During registration a different registration request was sent.	-	Go to step 4
   Vehicle ID not set	A vehicle ID has not been registered in the certification ECU (smart key ECU assembly).	Certification ECU (smart key ECU assembly)	Replace certification ECU (smart key ECU assembly) Refer to REMOVAL
   Key Registration Max	A registration request is sent when the maximum number of electrical key transmitter sub-assemblies has already been registered.	Certification ECU (smart key ECU assembly)	Go to step 8
   ID-BOX Error	A registration request is sent even though whether the vehicle is provided with an ID code box is unknown.	Certification ECU (smart key ECU assembly)	Check for DTC B2789
   Vehicle Speed Too High	A registration request is sent with a vehicle speed of 5 km/h or more.	-	Check if the vehicle is stationary. If a code cannot be registered even though the vehicle is stationary, then go to step 5
   No ECU Response	The steering lock ECU (steering lock actuator assembly) or certification ECU (smart key ECU assembly) was not connected.	Certification ECU (smart key ECU assembly) Steering lock ECU (steering lock actuator assembly)	Check for DTC B2785, B2786 or B2789
   L Code Verification Error	The L codes registered in the certification ECU (smart key ECU assembly) and steering lock ECU (steering lock actuator assembly) did not match.	Certification ECU (smart key ECU assembly) Steering lock ECU (steering lock actuator assembly)	Go to step 6
   Key Verification: Max Number	The number of electrical key transmitter sub-assemblies registered in the steering lock ECU (steering lock actuator assembly) was more than 7.	Steering lock ECU (steering lock actuator assembly)	Replace steering lock ECU (steering lock actuator assembly) Refer to DISASSEMBLY
   Key Verification: Amp Abnormal	Malfunction of the immobiliser amplifier, such as a short to ground.	Certification ECU (smart key ECU assembly) Engine switch	Check for DTC B278A or B2784
   Key Verification: Read Error	Although a registered electrical key transmitter sub-assembly was held near the engine switch, immobiliser system certification did not succeed.	Certification ECU (smart key ECU assembly) Electrical key transmitter sub-assembly	Go to step 9
   Unverified Key	Although all of the registered electrical key transmitter sub-assemblies had been held near the engine switch, electrical key transmitter sub-assembly registration was not possible due to immobiliser system certification not being able to succeed.	Certification ECU (smart key ECU assembly) Electrical key transmitter sub-assembly	Go to step 14
   Transponder Key Amp Error	Malfunction of the immobiliser amplifier, such as a short to ground.	Certification ECU (smart key ECU assembly) Engine switch	Check for DTC B278A or B2784
   New Key Registration Error	Although an unregistered electrical key transmitter sub-assembly was held near the engine switch, electrical key transmitter sub-assembly registration is not possible due to immobiliser system certification not being able to succeed.	Certification ECU (smart key ECU assembly) Electrical key transmitter sub-assembly Engine switch	Go to step 16
   New Key Vehicle ID Error	Although an unregistered electrical key transmitter sub-assembly was held near the engine switch, electrical key transmitter sub-assembly registration is not possible due to the vehicle ID not being stored successfully.	Certification ECU (smart key ECU assembly) Electrical key transmitter sub-assembly	Go to step 16
   New Key Registration Failed	After successful immobiliser system certification, time expired before smart recognition completion confirmation or a registration cancellation request was sent.	Certification ECU (smart key ECU assembly) Electrical key transmitter sub-assembly	Go to step 16
   New Key Already Registered	Although a registered electrical key transmitter sub-assembly was held near the engine switch, time expired or a registration cancellation request was sent.	-	Check if a registered electrical key transmitter sub-assembly was held near the engine switch instead of an unregistered electrical key transmitter sub-assembly by mistake. Perform registration again using an unregistered electrical key transmitter sub-assembly. If the same problem occurs again, replace the certification ECU (smart key ECU assembly). Refer to REMOVAL
   New Key ID Code Error	Electrical key transmitter sub-assembly registration was not possible due to the certification ECU (smart key ECU assembly) not being able to store the information of the electrical key transmitter sub-assembly to EEPROM correctly.	Certification ECU (smart key ECU assembly)	Replace certification ECU (smart key ECU assembly) Refer to REMOVAL
   No Response Registering L/S Code	The certification ECU (smart key ECU assembly) or steering lock ECU (steering lock actuator assembly) was not connected.	Certification ECU (smart key ECU assembly) Steering lock ECU (steering lock actuator assembly)	Check for DTC B2785
   L Code Verification NG	The L code could not be stored by the certification ECU (smart key ECU assembly) or steering lock ECU (steering lock actuator assembly).	Certification ECU (smart key ECU assembly) Steering lock ECU (steering lock actuator assembly)	Go to step 6
   Key Number Write Error	The certification ECU (smart key ECU assembly) could not store the number of electrical key transmitter sub-assemblies to EEPROM.	Certification ECU (smart key ECU assembly)	Replace certification ECU (smart key ECU assembly) Refer to REMOVAL
   ID Code BOX Write Error	The certification ECU (smart key ECU assembly) could not store the information of whether the ID code box was provided in the vehicle to EEPROM.	Certification ECU (smart key ECU assembly)	Replace certification ECU (smart key ECU assembly) Refer to REMOVAL

NEXT: Go to next step 

1. Make sure that another mode or different registration mode is not selected.

   OK

   Another mode or a different registration mode is not selected.

   HINT: 

   If any mode has been selected, it is necessary to cancel the mode.

NG → See step   19 

OK → See step   18 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Data List.
5. Read the Data List according to the display on the Techstream.
   COMBINATION METER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Vehicle Speed Meter	Vehicle speed/Min.: 0, Max.: 255	Almost the same as actual vehicle speed	-

   OK

   "0" is displayed when the vehicle is stationary.

NG → See step   20 

OK → See step   18 

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 .
   • For registration. Refer to REGISTRATION .

   OK

   Registration to the new certification ECU (smart key ECU assembly) has completed successfully.

NG → REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) 

OK → END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) 

1. Temporarily steering lock ECU (steering lock actuator assembly) with a new one and register the electrical key transmitter sub-assemblies to the new ECU.

   HINT: 

   • For replacement. Refer to DISASSEMBLY .
   • For registration. Refer to REGISTRATION .

NEXT → END (STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY WAS DEFECTIVE)) 

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 .
   • For registration. Refer to REGISTRATION .

NEXT → See step   19 

1. Make sure that a registered electrical key transmitter sub-assembly is used.

   OK

   A registered electrical key transmitter sub-assembly is used.

NG → See step   21 

OK: Go to next step 

1. Check the number of registered electrical key transmitter sub-assemblies.

   Result

   Result	Proceed to
   When only one electrical key transmitter sub-assembly is registered	A
   When 2 or more electrical key transmitter sub-assemblies are registered	B

B → See step   12 

A: Go to next step 

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 .
   • For registration. Refer to REGISTRATION .

   OK

   Registration to the new certification ECU (smart key ECU assembly) has completed successfully.

NG → REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY 

OK → END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) 

1. Reregister the electrical key transmitter sub-assemblies using different order combinations. Refer to REGISTRATION .

   HINT: 

   • Check the electrical key transmitter sub-assembly for which "Key Verification Error" is displayed.
   • If there are 2 or more electrical key transmitter sub-assemblies, make sure that the number of order combinations is the same as the number of electrical key transmitter sub-assemblies so that each transmitter can be checked first.
   EXAMPLE: WHEN THERE ARE 3 REGISTERED ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLIES (A, B AND C).
   
   

   Combination	Order*
   1	A → B → C
   2	B → C→ A
   3	C → A → B

   • *: Except the first electrical key transmitter sub-assembly, the remaining electrical key transmitter sub-assemblies can be checked in any order.

   HINT: 

   The electrical key transmitter sub-assembly held near the engine switch when the malfunction was detected is defective. The defective electrical key transmitter sub-assembly is the one that should be replaced.

   Result

   Result	Proceed to
   "Key Verification: Read Error" is displayed for all electrical key transmitter sub-assemblies.	A
   "Key Verification: Read Error" is displayed for at least one of the electrical key transmitter sub-assemblies.	B

B → ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY HELD WHEN "KEY VERIFICATION: READ ERROR" WAS DETECTED WAS DEFECTIVE 

A: Go to next step 

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 .
   • For registration. Refer to REGISTRATION .

   OK

   Registration to the new certification ECU (smart key ECU assembly) has completed successfully.

NG → REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY 

OK → END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) 

1. Check that all registered electrical key transmitter sub-assemblies are available.

   OK

   No registered electrical key transmitter sub-assemblies are missing.

NG → See step   22 

OK: Go to next step 

1. Reregister the electrical key transmitter sub-assemblies using different order combinations. Refer to REGISTRATION .

   OK

   "Unverified Key" is not displayed.

   HINT: 

   If there are 2 or more electrical key transmitters, make sure that the number of order combinations is the same as the number of electrical key transmitters so that each transmitter can be checked first.

   EXAMPLE: WHEN THERE ARE 3 REGISTERED ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLIES (A, B AND C).
   
   

   Combination	Order*
   1	A → B → C
   2	B → C→ A
   3	C → A → B

   • *: Except the first electrical key transmitter sub-assembly, the remaining electrical key transmitter sub-assemblies can be checked in any order.

   HINT: 

   The electrical key transmitter sub-assembly held near the engine switch when the malfunction was detected is defective. The defective electrical key transmitter sub-assembly is the one that should be replaced.

NG → ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY HELD WHEN "UNVERIFIED KEY" WAS DETECTED WAS DEFECTIVE 

OK → See step   18 

1. Using an unregistered electrical key transmitter sub-assembly, register the ID. Refer to REGISTRATION .

   OK

   The key ID can be registered.

NG → See step   18 

OK → END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)