RM3660EC _58 Vehicle Interior _080747 THEFT DETERRENT / KEYLESS ENTRY _0586354 SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model (NR Series)) J

THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model (NR Series)) Additional Key cannot be Registered

DESCRIPTION

If additional registration is not possible, a malfunction of the electrical key transmitter sub-assembly, certification ECU (smart key ECU assembly), engine switch, No. 1 indoor electrical key antenna assembly (front floor), steering lock ECU (steering lock actuator or upper bracket assembly) or door control receiver is suspected.

CAUTION / NOTICE / HINT

NOTICE:: ·

If registration of an electrical key transmitter sub-assembly cannot be performed, refer to Service Bulletin.

·

When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

·

The smart entry and start system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model (NR Series))>HOW TO PROCEED WITH TROUBLESHOOTING202304,999999,_58,_080747,_0586354,RM1000000029OG1,

·

Before replacing the certification ECU (smart key ECU assembly), steering lock ECU (steering lock actuator or upper bracket assembly) or electrical key transmitter sub-assembly, refer to Service Bulletin.

·

After repair, confirm that no DTCs are output.

HINT:: When additional registration is not possible, freeze frame data may be stored in the certification ECU (smart key ECU assembly).; If freeze frame data is available, it can be helpful in determining whether any parts were malfunctioning or not or narrowing down the suspected areas based on the table below.

Certification ECU Log of ID Code Registration
Parameter Name	Cause of Problem and Countermeasure
Failed Registration Mode	Make sure that another mode or a different registration mode is not selected, and then perform registration again.
Key Registration Max	Registration was not possible because the maximum number of the electrical key transmitter sub-assemblies has already been registered to the certification ECU (smart key ECU assembly). If a new electrical key transmitter sub-assembly needs to be registered, such as when one of the registered electrical key transmitter sub-assemblies has been lost, erase an unnecessary ID code first.
Key Verification: Amp Abnormal	Although a registered electrical key transmitter sub-assembly was held near the engine switch, electrical key transmitter sub-assembly registration could not be confirmed due to a malfunction of the immobiliser amplifier, such as a short to ground. DTC B278A or B2784 was stored.
Key Verification: Read Error	A registered electrical key transmitter sub-assembly was not held near the engine switch properly or electrical key transmitter sub-assembly registration cannot be confirmed due to wave interference, etc. Register the electrical key transmitter sub-assembly using the correct procedure or use another registered electrical key transmitter sub-assembly.
Transponder Key Amp Abnormal	Although an unregistered electrical key transmitter sub-assembly was held near the engine switch, electrical key transmitter sub-assembly registration cannot be completed due to a malfunction of the immobiliser amplifier, such as a short to ground. DTC B278A or B2784 was stored.
New Key Registration Error	An unregistered electrical key transmitter sub-assembly was not held near the engine switch properly or electrical key transmitter sub-assembly registration cannot be confirmed due to a malfunction, such as wave interference. Reregister the electrical key transmitter sub-assembly using the correct procedure or use another registered electrical key transmitter sub-assembly.
New Key Vehicle ID Error	Although the vehicle ID stored in the certification ECU (smart key ECU assembly) should be registered to the electrical key transmitter sub-assembly during electrical key transmitter sub-assembly registration, it was not successful. Use another unregistered electrical key transmitter sub-assembly for registration.
New Key Registration Failed	Although an unregistered electrical key transmitter sub-assembly was held near the engine switch for registration, electrical key transmitter sub-assembly registration was not successful due to wave interference (such as radio waves emitted from a device in the cabin) or a low transmitter battery.
New Key Already Registered	As a registered electrical key transmitter sub-assembly was held near the engine switch by mistake, electrical key transmitter sub-assembly registration was not successful. Using an unregistered electrical key transmitter sub-assembly, perform the registration procedure again.
New Key ID Code Error	Replace the certification ECU (smart key ECU assembly).
New Key Information Abnormal	The ID code of an electrical key transmitter sub-assembly could not be registered to the certification ECU (smart key ECU assembly). If 2 electrical key transmitter sub-assemblies are held near the engine switch at the same time, incorrect registration information will be stored in the certification ECU (smart key ECU assembly), suspending registration. Reregister the electrical key transmitter sub-assembly using the correct registration procedure.

Body Electrical > Entry&Start > Utility

Tester Display
Operation History

50005 125 52

PROCEDURE

1.READ VALUE USING GTS (UNMATCHED VEHICLE-ID)

Connect the GTS to the DLC3.

Turn the engine switch on (IG).

Turn the GTS on.

Enter the following menus: Body Electrical / Entry&Start / Data List.

Read the Data List according to the display on the GTS.

Body Electrical > Entry&Start > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Unmatched Vehicle-ID	Key No. (incorrect or correct)	No or Yes	No: Communication normal Yes: Communication malfunction	The vehicle ID registered in the vehicle and the vehicle ID registered in the electrical key transmitter sub-assembly are different (if a key from another vehicle is brought into the vehicle exterior detection area while the doors are locked, "Yes" is displayed for "Unmatched Vehicle-ID" in the Data List). Other potential causes: · An electrical key transmitter sub-assembly from a different vehicle is being used. · A communication error due to wave interference. · The electrical key transmitter sub-assembly or certification ECU (smart key ECU assembly) is malfunctioning.

Body Electrical > Entry&Start > Data List

Tester Display
Unmatched Vehicle-ID

50003 125 20

Result:

Result	Proceed to
"No" is displayed	A
"Yes" is displayed	B

2.READ VALUE USING GTS (OPERATION HISTORY)

5.REGISTRATION

2.READ VALUE USING GTS (OPERATION HISTORY)

Check that the connectors are properly connected to the vehicle and GTS.

Connect the GTS to the DLC3.

Turn the engine switch on (IG).

Turn the GTS on.

Enter the following menus: Body Electrical / Entry&Start / Utility / Operation History / Certification ECU operation log of ID code registration.

Body Electrical > Entry&Start > Utility

Tester Display
Operation History

50005 125 52

Check the freeze frame data.

Registration Function (Reason for Non-operation):

Parameter Name	Detection Condition	Trouble Area
New Key ID Registration Stopped (Conditions Other than Vehicle ID not Met)	The key ID information of the certification ECU (smart key ECU assembly) and unregistered key transmitter sub-assembly did not match due to wave interference around the vehicle or depletion of the battery of the key transmitter sub-assembly.	· Certification ECU (smart key ECU assembly) · Electrical key transmitter sub-assembly
New Key ID Registration Stopped (Key Already Registered)	A registered electrical key transmitter sub-assembly was used.	Incorrect registration procedure is used
New Key ID Registration Stopped (ID Code Writing Failure)	An unregistered electrical key transmitter sub-assembly was held near the engine switch, but key ID information was not stored by the certification ECU (smart key ECU assembly).	Certification ECU (smart key ECU assembly)
New Key ID Registration Stopped (Key Information Malfunction)	An unregistered electrical key transmitter sub-assembly was held near the engine switch, but key ID information was not stored by the certification ECU (smart key ECU assembly).	Incorrect registration procedure is used
Registration Limit	An electrical key transmitter sub-assembly was attempted to be registered when the maximum number of electrical key transmitter sub-assemblies that can be registered has been reached.	Incorrect registration procedure is used
Cannot Enter Registration Mode (Vehicle Speed > 5 km/h)	The vehicle speed was 5 km/h (3.1 mph) or more.	Certification ECU (smart key ECU assembly)
Registered Key Confirmation Failed (Immobilizer Certification Failed)	A registered electrical key transmitter sub-assembly was incorrectly held near the engine switch and the certification ECU (smart key ECU assembly) could not complete verification.	· Certification ECU (smart key ECU assembly) · Electrical key transmitter sub-assembly
ECU Code Confirmation Failed (No Response from Connected ECUs)	The certification ECU (smart key ECU assembly) did not receive a response from the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator or upper bracket assembly).	· Certification ECU (smart key ECU assembly) · ID code box (immobiliser code ECU)
ECU Code Confirmation Failed (S Code Certification Failed)	The authentication code (S code) of the certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) did not match.	· Certification ECU (smart key ECU assembly) · ID code box (immobiliser code ECU)
ECU Code Confirmation Failed (L Code Certification Failed)	The authentication code (L code) of the ID code box (immobiliser code ECU) and steering lock ECU (steering lock actuator or upper bracket assembly) did not match.	· Certification ECU (smart key ECU assembly) · ID code box (immobiliser code ECU) · Steering lock ECU (steering lock actuator or upper bracket assembly)
ECU Code Confirmation Failed (Too Many Keys Registered in ID Code Box)	The maximum number of electrical key transmitter sub-assemblies that can be registered to the ID code box (immobiliser code ECU) has been exceeded.	ID code box (immobiliser code ECU)
New Key ID Registration Failed (Immobilizer Certification Failed)	An unregistered electrical key transmitter sub-assembly was incorrectly held near the engine switch and the certification ECU (smart key ECU assembly) could not complete verification.	· Certification ECU (smart key ECU assembly) · Electrical key transmitter sub-assembly
New Key ID Registration Failed (Conditions Other than Vehicle ID not Met)	The key ID information of the certification ECU (smart key ECU assembly) and unregistered key transmitter sub-assembly did not match due to wave interference around the vehicle or depletion of the battery of the key transmitter sub-assembly.	· Certification ECU (smart key ECU assembly) · Electrical key transmitter sub-assembly
New Key ID Registration Failed (Key Already Registered)	A registered electrical key transmitter sub-assembly was used.	Certification ECU (smart key ECU assembly)
New Key ID Registration Failed (ID Code Writing Failed)	An unregistered electrical key transmitter sub-assembly was held near the engine switch, but key ID information was not stored by the certification ECU (smart key ECU assembly).	Certification ECU (smart key ECU assembly)
New Key ID Registration Failed (Key Information Malfunction)	An unregistered electrical key transmitter sub-assembly was held near the engine switch, but key ID information was not stored by the certification ECU (smart key ECU assembly).	Incorrect registration procedure is used
No Response from Connected ECUs when Registering L/S Codes	There are no response from the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator or upper bracket assembly) at registration of L code or S code.	· Certification ECU (smart key ECU assembly) · ID code box (immobiliser code ECU)
L Code Registration Failed (ID Code Box, Steering Lock ECU)	The authentication code (L code) is not registered by the ID code box (immobiliser code ECU) and steering lock ECU (steering lock actuator or upper bracket assembly).	· Certification ECU (smart key ECU assembly) · ID code box (immobiliser code ECU) · Steering lock ECU (steering lock actuator or upper bracket assembly)
S Code Registration Failed (Certification ECU, ID Code Box)	The authentication code (S code) is not registered by the certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU).	ID code box (immobiliser code ECU)
ECU ID Verification Error	The certification ECU (smart key ECU assembly) did not receive S code registration response from the ID code box (immobiliser code ECU).	· Certification ECU (smart key ECU assembly) · ID code box (immobiliser code ECU)
Key Number Write Error	The number of the electrical key transmitter sub-assemblies are not stored by the certification ECU (smart key ECU assembly).	Certification ECU (smart key ECU assembly)
B Code Registration Failed (Certification ECU, Main Body ECU)	B code was not stored by the certification ECU (smart key ECU assembly).	· Main body ECU (multiplex network body ECU) · Certification ECU (smart key ECU assembly)
New Key ID Registration Stopped (Security Access Malfunction)	Communication error	Communication error between the GTS and key registration server
New Key ID Registration Stopped (Certification ECU Type Malfunction)	The electrical key transmitter sub-assembly is not compatible with the certification ECU (smart key ECU assembly).	Certification ECU (smart key ECU assembly)
New Key ID Registration Stopped (Key Type Malfunction)	The electrical key transmitter sub-assembly is not compatible with the registration mode.	Electrical key transmitter sub-assembly

Result:

Result	Proceed to
Vehicle operation history related to operation malfunction does not exist	A
"New Key ID Registration Stopped (Conditions Other than Vehicle ID not Met)" is displayed on the GTS	B
"New Key ID Registration Failed (Immobilizer Certification Failed)" is displayed on the GTS
"New Key ID Registration Failed (Conditions Other than Vehicle ID not Met)" is displayed on the GTS
"New Key ID Registration Stopped (Key Already Registered)" is displayed on the GTS	C
"New Key ID Registration Stopped (Key Information Malfunction)" is displayed on the GTS
"New Key ID Registration Failed (Key Information Malfunction)" is displayed on the GTS
"New Key ID Registration Stopped (ID Code Writing Failure)" is displayed on the GTS	D
"New Key ID Registration Failed (ID Code Writing Failed)" is displayed on the GTS	D
"Registration Limit" is displayed on the GTS	E
"Cannot Enter Registration Mode (Vehicle Speed > 5 km/h)" is displayed on the GTS	F
"Registered Key Confirmation Failed (Immobilizer Certification Failed)" is displayed on the GTS	G
"ECU Code Confirmation Failed (No Response from Connected ECUs)" is displayed on the GTS	H
"No Response from Connected ECUs when Registering L/S Codes" is displayed on the GTS	H
"ECU Code Confirmation Failed (S Code Certification Failed)" is displayed on the GTS	I
"ECU ID Verification Error" is displayed on the GTS	I
"ECU Code Confirmation Failed (L Code Certification Failed)" is displayed on the GTS	J
"L Code Registration Failed (ID Code Box, Steering Lock ECU)" is displayed on the GTS	J
"ECU Code Confirmation Failed (Too Many Keys Registered in ID Code Box)" is displayed on the GTS	K
"S Code Registration Failed (Certification ECU, ID Code Box)" is displayed on the GTS	K
"New Key ID Registration Failed (Key Already Registered)" is displayed on the GTS	L
"Key Number Write Error" is displayed on the GTS	M
"New Key ID Registration Stopped (Certification ECU Type Malfunction)" is displayed on the GTS	M
"B Code Registration Failed (Certification ECU, Main Body ECU)" is displayed on the GTS	N
"New Key ID Registration Stopped (Security Access Malfunction)" is displayed on the GTS	O
"New Key ID Registration Stopped (Key Type Malfunction)" is displayed on the GTS	P

3.CHECK SMART ENTRY AND START SYSTEM (for Start Function)

6.REREGISTRATION

PERFORM REREGISTRATION

8.READ VALUE USING GTS (OPERATION HISTORY)

END (REGISTRATION NOT FINISHED DUE TO MAXIMUM NUMBER OF REGISTERED ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLIES BEING EXCEEDED)

If another electrical key transmitter sub-assembly needs to be registered, perform "UNDESIGNATED KEY PERMANENT ERASURE" before performing the registration procedure.

HINT:: Refer to Service Bulletin.

9.READ VALUE USING GTS (VEHICLE SPEED METER)

10.CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

14.CHECK FOR DTC

15.REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

16.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

NEW KEY REGISTRATION FAILED, CHECK THE KEY

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).

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

18.REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

CHECK GTS

Check communication between the GTS and the key registration server.

REREGISTRATION

Replace the electrical key transmitter sub-assembly, register the ID.

HINT:: Refer to Service Bulletin.

3.CHECK SMART ENTRY AND START SYSTEM (for Start Function)

Remove the transmitter battery from the electrical key transmitter sub-assembly.

0.5,0.24 0.771,0.24 0.771,0.24 1,0.656 false 1.177,1.958 1.448,1.958 1.448,1.958 1.677,1.625 false 0.313,0.156 0.615,0.365 0.302,0.208 10 false *1 1,1.865 1.313,2.104 0.313,0.24 10 false *2

*1	Engine Switch
*2	Electrical Key Transmitter Sub-assembly

With the brake pedal depressed, hold the electrical key transmitter sub-assembly near the engine switch and check if the power source mode changes.

OK:: The power source mode changes.

HINT:: If the power source mode changes, the cabin verification is malfunctioning.

Result:

Result	Proceed to
The power source mode changes	A
The power source mode does not change	B

4.CHECK STEERING LOCK FUNCTION

GO TO SMART ENTRY AND START SYSTEM (for Start Function) (Power Source Mode does not Change to ON (IG and ACC))

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model (NR Series))>Power Source Mode does not Change to ON (IG and ACC)202304,999999,_58,_080747,_0586354,RM1000000029OGW,

4.CHECK STEERING LOCK FUNCTION

The engine switch is on (IG).

Check that the steering unlocks.

HINT:: ·

When the engine switch is turned on (ACC) or on (IG) and the electrical key transmitter assembly and certification ECU (smart key ECU assembly) are verified, the steering is unlocked.; ·

Check that the communication between the steering lock ECU (steering lock actuator or upper bracket assembly) and certification ECU (smart key ECU assembly) is normal.

OK:: The steering unlocks.

Result:

Proceed to
OK
NG

5.REGISTRATION

GO TO SMART ENTRY AND START SYSTEM (for Start Function) (Unable to Unlock Steering Wheel (Engine cannot Start))

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model (NR Series))>Unable to Unlock Steering Wheel (Engine cannot Start)202304,999999,_58,_080747,_0586354,RM1000000029OH6,

5.REGISTRATION

Using an unregistered electrical key transmitter sub-assembly, perform the additional registration procedure.

HINT:: Refer to Service Bulletin.

OK:: Additional registration can be completed.

Result:

Proceed to
OK
NG

REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY (FIRST REGISTERED KEY WAS DEFECTIVE)

7.REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

6.REREGISTRATION

Using an unregistered electrical key transmitter sub-assembly, register the ID.

HINT:: Refer to Service Bulletin.

OK:: The key ID can be registered.

Result:

Proceed to
OK
NG

END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

7.REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.

HINT:: Refer to Service Bulletin.

OK:: All of the electrical key transmitter sub-assemblies could be registered to the new certification ECU (smart key ECU assembly) successfully.

Result:

Proceed to
OK
NG

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

GO TO OTHER PROBLEM (New Key cannot be Registered)

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model (NR Series))>New Key cannot be Registered202304,999999,_58,_080747,_0586354,RM1000000029OGZ,

8.READ VALUE USING GTS (OPERATION HISTORY)

Connect the GTS to the DLC3.

HINT:: Refer to Service Bulletin.

Turn the engine switch on (IG).

Turn the GTS on.

Enter the following menus: Body Electrical / Entry&Start / Utility / Operation History / Certification ECU operation log of ID code registration.

Body Electrical > Entry&Start > Utility

Tester Display
Operation History

50005 125 52

Check the freeze frame data.

Result:

Result	Proceed to
"New Key ID Registration Stopped (Key Already Registered)" is not displayed on the GTS	A
"New Key ID Registration Stopped (Key Already Registered)" is displayed on the GTS	B

END (COMMUNICATION ERROR BETWEEN GTS AND VEHICLE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

9.READ VALUE USING GTS (VEHICLE SPEED METER)

Connect the GTS to the DLC3.

Turn the engine switch on (IG).

Turn the GTS on.

Enter the following menus: Body Electrical / Combination Meter / Data List.

Read the Data List according to the display on the GTS.

Body Electrical > Combination Meter > Data List

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

Body Electrical > Combination Meter > Data List

Tester Display
Vehicle Speed Meter

50003 409 23

OK:: "0 km/h (0 mph)" is displayed when the vehicle is stationary.

Result:

Proceed to
OK
NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

GO TO METER / GAUGE SYSTEM

except 12.3 Inch Display: Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM (except 12.3 Inch Display)>HOW TO PROCEED WITH TROUBLESHOOTING202304,999999,_58,_080793,_0598151,RM100000002B2XD,

for 12.3 Inch Display: Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM (for 12.3 Inch Display)>HOW TO PROCEED WITH TROUBLESHOOTING202304,999999,_58,_080793,_0473175,RM100000002B5WE,

10.CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

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

OK:: A registered electrical key transmitter sub-assembly is being used.

Result:

Proceed to
OK
NG

11.CHECK NUMBER OF REGISTERED ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLIES

USE A REGISTERED ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY AND PERFORM REREGISTRATION

11.CHECK NUMBER OF REGISTERED ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLIES

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

Result:

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

13.REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

12.REREGISTRATION

Reregister the electrical key transmitter sub-assemblies using different order combinations.

HINT:: ·

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.

·

Refer to Service Bulletin.

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 for the first electrical key transmitter sub-assembly, the remaining electrical key transmitter sub-assemblies can be checked in any order.

OK:: "Key Verification: Read Error" is not displayed.

Result:

Proceed to
OK
NG

REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY HELD WHEN "Key Verification: Read Error" WAS DETECTED WAS DEFECTIVE)

13.REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.

HINT:: Refer to Service Bulletin.

OK:: All of the electrical key transmitter sub-assemblies could be registered to the new certification ECU (smart key ECU assembly) successfully.

Result:

Proceed to
OK
NG

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

REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

14.CHECK FOR DTC

Check for DTCs.

Body Electrical > Entry&Start > Trouble Codes: 50001 125

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

OK:: DTC B2785 is not output.

Result:

Proceed to
OK
NG

15.REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

GO TO DTC B2785

Click herePower Source / Network>NETWORKING>LIN COMMUNICATION SYSTEM (for NR Series Engine)>B2785202304,999999,_57,_080743,_0600577,RM100000002BDCP,B2785

15.REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.

HINT:: Refer to Service Bulletin.

OK:: All of the electrical key transmitter sub-assemblies could be registered to the new certification ECU (smart key ECU assembly) successfully.

Result:

Proceed to
OK
NG

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

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

16.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.

HINT:: Refer to Service Bulletin.

OK:: All of the electrical key transmitter sub-assemblies could be registered to the new certification ECU (smart key ECU assembly) successfully.

Result:

Proceed to
OK
NG

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

17.CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)

Replace the steering lock ECU (steering lock actuator or upper bracket assembly) with a new one and register the electrical key transmitter sub-assemblies.

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY202304,202502,_55,_080762,_0391589,RM100000002B7U4,202502,999999,_55,_080762,_0391589,RM100000002Q02F,

OK:: All of the electrical key transmitter sub-assemblies could be registered to the new steering lock ECU (steering lock actuator or upper bracket assembly) successfully.

Result:

Proceed to
OK
NG

END (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) WAS DEFECTIVE)

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

18.REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Temporarily replace the main body ECU (multiplex network body ECU) with a new one and register the electrical key transmitter sub-assemblies.

HINT:: Refer to Service Bulletin.

OK:: All of the electrical key transmitter sub-assemblies could be registered to the new main body ECU (multiplex network body ECU) successfully.

Result:

Proceed to
OK
NG

END (MAIN BODY ECU (MULTIPLEX NETWROK BODY ECU) WAS DEFECTIVE)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)