Part 1

INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION

INITIALIZATION

1. PROCEDURES NECESSARY WHEN BATTERY TERMINAL IS DISCONNECTED/RECONNECTED
NOTE: It may not be possible to release the steering lock or start the engine when the battery voltage is low. If this occurs, initialization of the steering lock system is required. Programming and Relearning

2. PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED

- *1: for U341E,U250E Automatic Transaxle
- *2: for 2AZ-FE
- *3: for 2ZR-FE
- *4: w/ Smart Key System
- *5: w/o Smart Key System

3. VEHICLE IDENTIFICATION NUMBER (VIN) REGISTRATION
NOTE: The Vehicle Identification Number (VIN) must be input into a replacement ECM.
HINT: The VIN is a 17-digit alphanumeric vehicle identification number. The Techstream is required to register the VIN.

(a) Description
HINT: This registration section consists of two parts: Read VIN and Write VIN.
(1) Read VIN: This process allows the VIN stored in the ECM to be read in order to confirm that the two VINs, provided with the vehicle and stored in the vehicle's ECM, are the same.
(2) Write VIN: This process allows the VIN to be input into the ECM. If the ECM is changed, or the ECM VIN and vehicle VIN do not match, the VIN can be registered, or overwritten in the ECM by following procedure.
(b) Read VIN
(1) Confirm the vehicle VIN.
(2) Connect the Techstream to the DLC3.
(3) Turn the ignition switch to ON.
(4) Turn the Techstream on.
(5) Enter the following menus: Powertrain / Engine and ECT / Utility / VIN / VIN Read.
(c) Write VIN
(1) Confirm the vehicle VIN.
(2) Connect the Techstream to the DLC3.
(3) Turn the ignition switch to ON.
(4) Turn the Techstream on.
(5) Enter the following menus: Powertrain / Engine and ECT / Utility / VIN / VIN Write.
4. DESCRIPTION OF CODE REGISTRATION (Engine Immobiliser System (w/ Smart Key System))
HINT:
- The ID codes are the same as recognition codes for the wireless transmitter and the engine immobiliser function. Registering an ID code enables the smart key system, the wireless door lock control function and the engine immobiliser function to be operated.
- Code registration is necessary when the certification ECU (smart key ECU assembly), ID code box (immobiliser code ECU), steering lock ECU, or key is replaced with a new one.

(a) Vehicles with the smart key system do not have a key slot. Therefore, hold the key close to the engine switch to register the key, as shown in the illustration.

5. PART REPLACEMENT AND KEY REGISTRATION (Engine Immobiliser System (w/ Smart Key System))
(a) The following table shows ECU replacement and key registration procedures for cases in which a malfunctioning ECU has been identified through the troubleshooting of the smart key system.
HINT:
- The following procedures can be performed:

- New key ID registration
- Additional key ID registration
- Key ID erasure
- All key ID erasure
- ECU code registration
- If the customer has not brought all the registered keys, replacement of the ID code box (immobiliser code ECU) is also required.
- A maximum of 4 keys can be registered.

6. KEY REGISTRATION (Engine Immobiliser System (w/ Smart Key System))
(a) PROCEDURE "A"
New key ID registration (when replacing the certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU), or when replacing the certification ECU (smart key ECU assembly), ID code box (immobiliser code ECU) and steering lock ECU)

- *1: Repeat this process for each key which is to be registered for the vehicle. Finish the procedure for each key within 30 seconds. If the procedure for any of the keys has not been finished within the specified time, perform the registration procedures again from process 1. Make sure that only 1 key is in the cabin during the registration procedures. If 2 or more keys are in the cabin simultaneously, electric waves will interfere with each other, preventing normal registration.

(b) PROCEDURE "B"
New key ID registration (when replacing the certification ECU (smart key ECU assembly))

- *1: Repeat this process for each key registered for the vehicle. Finish the procedure for each key within 30 seconds. If the procedure for any of the keys has not been finished within the specified time, perform the registration procedures again from process 1. If the key confirmation procedure for a key is performed, the security indicator light comes on and remains on until all the keys are confirmed.
- *2: Repeat this process for each key which is to be registered for the vehicle. Finish the procedure for each key within 30 seconds. If the procedure for any of the keys is not finished within the specified time, perform the registration procedures again from 1. Make sure that only 1 key is in the cabin during the registration procedures. If 2 or more keys are in the cabin simultaneously, electric waves will interfere with each other, preventing normal registration.

(c) PROCEDURE "C"
Additional key ID registration

- *1: Perform this process for one of the keys registered for the vehicle. Finish the procedure within 30 seconds. If the procedure has not been finished within the specified time, perform the registration procedures again from process 1.
- *2: Repeat this process for each key which is to be registered for the vehicle. Finish the procedure for each key within 30 seconds. If the procedure for any of the keys is not finished within the specified time, perform the registration procedures again from 1. Make sure that only 1 key is in the cabin during the registration procedures. If 2 or more keys are in the cabin simultaneously, electric waves will interfere with each other, preventing normal registration.

(d) PROCEDURE "D"
Key ID erasure
HINT: Erase all registered key codes except one.

(f) PROCEDURE "F"
ECU code registration

- *1: Perform this process for one of the keys registered for the vehicle. Finish the procedure within 30 seconds. If the procedure has not been finished within the specified time, perform the erasure procedures again from process 1.

(g) PROCEDURE "G"
ECU communication ID registration
NOTICE:
- The ECU communication ID should be registered when the ID code box (immobiliser code ECU) is replaced in order to match these ECU communication IDs.
- The engine cannot be started unless the ECU communication IDs match.
- After the registration, pressing the engine switch may not start the engine on the first try. If so, press the engine switch again.
- Erase DTC B2799 (code for ECM's immobiliser communication error) by either of the following:
- Use the Techstream.
- Disconnect the battery for 30 seconds.
(1) Using SST, connect terminals TC and CG of the DLC3.
SST: 09843-18040

(2) Turn the engine switch on (IG) and leave it as is for 30 minutes.
HINT: Do not start the engine.
(3) Turn the engine switch off and disconnect terminals TC and CG.
(4) Check that the engine starts and stays running for more than 3 seconds.
(h) PROCEDURE "H"
ECU communication ID registration
NOTE: The ECU communication ID should be registered when the ECM is replaced in order to match the ECU communication IDs.

7. DESCRIPTION OF CODE REGISTRATION (Engine Immobiliser System (w/o Smart Key System))
HINT: The key has 2 codes: the key code (immobiliser code) and the wireless code. Both of these codes need to be registered. For the wireless code registration procedures, refer to Wireless Door Lock Control System.

(a) When adding master keys or sub keys (Additional registration):
(1) Register the key code (immobiliser code) in the transponder key ECU assembly.

(b) When replacing the transponder key ECU assembly (New registration):
(1) Register the key code (immobiliser code) in the transponder key ECU assembly.

(2) Register the ECU communication ID between the new transponder key ECU assembly and the ECM.

(c) When replacing the ECM:
(1) Register the ECU communication ID between the transponder key ECU assembly and the new ECM.

(d) When replacing the transponder key ECU assembly and the ECM:
(1) Register the key codes (immobiliser codes) in the new transponder key ECU assembly.

(2) Register the ECU communication ID between the new transponder key ECU assembly and the new ECM.

(e) When clearing the key code(s):
(1) Clear the key code(s) of lost key(s).

8. KEY REGISTRATION (Engine Immobiliser System (w/o Smart Key System))
(a) New key code registration (Procedure "A"):
NOTE: Make sure that no key codes are registered in the transponder key ECU assembly.
HINT:
- In this mode, a maximum of 3 key codes for 2 master keys and 1 sub-key can be registered. The master keys and sub-key can be registered in any order because the transponder key ECU assembly can distinguish between different types of keys.
- New key codes must be registered with the battery connected. The ignition switch can be either on or off.
- When a new transponder key ECU assembly is installed, key codes must be registered in the transponder key ECU assembly.

Automatic Key Code Registration (New Registration)

HINT:
- When the engine immobiliser system is operating normally and the key is pulled out, the security indicator light blinks continuously.
- If the new key code registration fails, code 2-1 will be output through the security indicator light. Trying to re-register an already registered key will cause code 2-2 to be output when the key is inserted. If the number of registered key codes exceeds the maximum limit, code 2-3 will be output through the security indicator light. The output details are shown below.

(b) Finish the automatic key code registration mode. The automatic key code registration mode can be forced to end when at least 1 key code (immobiliser code) for the master key has been registered.
HINT: Follow the instruction on the Techstream screen to end new key code registration mode.

9. REGISTRATION OF ADDITIONAL KEY (Engine Immobiliser System (w/o Smart Key System))
(a) Additional registration (Procedure "B"):
HINT:
- A maximum of 5 key codes and 3 sub-key codes can be registered.
- Registration mode will end if any step is not completed within the specified time.
- When the ignition cylinder or the key cylinder set is replaced, remove the transmitter module from the original master key. Then install this transmitter module to a new key and use the new key as the master key. If necessary, use this master key to register other keys.
NOTE: When the ignition key cylinder has been replaced, locking and unlocking doors are possible with the new master key's transmitter module (removed from the original master key). However, the new master key will not be able to lock and unlock doors through the door key cylinder. Keep the original master key. If the battery in the new master key's transmitter module fails, the original master key can be used to lock and unlock doors through the door key cylinder.

Additional Registration

HINT:
- A brief outline of key code registration procedures is shown above. For detailed information, refer to the Techstream screen.
- When the engine immobiliser system is operating normally and the key is pulled out, the security indicator light blinks continuously.
- If the key code registration has failed in automatic key code registration mode, code 2-1 will be output through the security indicator light. Trying to re-register an already registered key will cause code 2-2 to be output when the key is inserted. If the number of registered key codes exceeds the maximum limit, code 2-3 will be output through the security indicator light. The details are shown in procedure "A".

10. ERASURE OF KEY CODE (Engine Immobiliser System (w/o Smart Key System))
(a) Key code erasure (Procedure "C").
HINT:
- Performing this procedure will erase all key codes except for the master key, which is used for erasing the key codes. In order to use a key whose code has been erased, a new key code must be registered
- This procedure will be canceled if each step is not completed within the specified time.

Key Code Erasure

HINT:
- A brief outline of key code registration procedures is shown above. For detailed information, refer to the Techstream screen.
- When the engine immobiliser system is operating normally and the key is pulled out, the security indicator light blinks continuously.

11. ECU COMMUNICATION ID REGISTRATION (Engine Immobiliser System (w/o Smart Key System))
(a) ECU communication ID registration (Procedure "D"):
NOTICE:
- When the transponder key ECU assembly is replaced, the ECU communication ID of the ECM must be registered into the transponder key ECU assembly to match their ECU communication IDs.
- The engine cannot be started unless the ECU communication IDs match.
- Do not turn the ignition switch from on to off 20 times or more before registering the ECU communication ID. Turning the ignition switch from on to off 20 times or more will result in the engine not starting unless the transponder key ECU assembly is replaced with a new one.
- After the registration, turning the ignition switch to the START position may not start the engine on the first try. If so, turn the ignition switch to the START position again.
- After the engine is started, erase DTC B2799 (code for ECM's immobiliser communication error) by either of the following:
- Using the Techstream.
- Disconnecting the battery for 30 seconds.
(1) Using SST, connect terminals TC and CG of the DLC3.
SST: 09843-18040

(2) Turn the ignition switch to ON and leave the vehicle as is for 30 minutes.
HINT: Do not start the engine.
(3) Check that the engine starts.
(b) ECU communication ID registration (Procedure "E"):
NOTE: The ECU communication ID should be registered when the ECM and transponder key ECU assembly are replaced or when the ECM only is replaced in order to match the ECU communication ID.

12. RESET MEMORY (INITIALIZATION for U341E)
NOTICE:
- Perform the RESET MEMORY (AT initialization) when replacing the automatic transaxle assembly, engine assembly or ECM.
- The RESET MEMORY can be performed only with the Techstream.
HINT: The ECM memorizes the condition that the ECT controls the automatic transaxle assembly and engine assembly according to those characteristics. Therefore, when the automatic transaxle assembly, engine assembly, or ECM has been replaced, it is necessary to reset the memory so that the ECM can memorize the new information.
Reset procedure is as follows.

(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON and the Techstream main switch on.
(d) Enter the following menus: Powertrain / Engine and ECT / Utility / Reset Memory. Then, press "Next".
CAUTION: After performing the RESET MEMORY, be sure to perform the ROAD TEST described earlier.
HINT: The ECM is learned by performing the ROAD TEST.

13. RESET MEMORY (INITIALIZATION for U250E)
NOTICE:
- Perform the RESET MEMORY (AT initialization) when replacing the automatic transaxle assembly, engine assembly or ECM.
- The RESET MEMORY can be performed only with the Techstream.
HINT: The ECM memorizes the condition that the ECT controls the automatic transaxle assembly and engine assembly according to those characteristics. Therefore, when the automatic transaxle assembly, engine assembly, or ECM has been replaced, it is necessary to reset the memory so that the ECM can memorize the new information.
Reset procedure is as follows.

(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON and the Techstream main switch on.
(d) Enter the following menus: Powertrain / Engine and ECT / Utility / Reset Memory. Then, press "Next".
CAUTION: After performing the RESET MEMORY, be sure to perform the ROAD TEST Road Test described earlier.
HINT: The ECM is learned by performing the ROAD TEST.

14. DESCRIPTION OF CODE REGISTRATION (Tire Pressure Warning System)
It is necessary to register the transmitter ID in the tire pressure warning ECU when replacing the tire pressure warning valve and transmitter and/or tire pressure warning ECU.
Prepare all transmitter ID data before starting registration.
(a) Before registration
(1) When replacing the tire pressure warning ECU:

- Read the registered transmitter IDs that are stored in the old ECU using the Techstream and note them down.
- If reading stored transmitter IDs is impossible due to malfunctions of components such as the tire pressure warning antenna and receiver, remove the tires from the wheels and check the IDs located on the tire pressure warning valve and transmitters Service Precautions.
(2) When replacing a tire pressure warning valve and transmitter:

- Take note of the 7-digit number (transmitter ID) written on the tire pressure warning valve and transmitter.

NOTICE:
- The transmitter ID is written on the tire pressure warning valve and transmitter. It will be unable to be read after installing the tire pressure warning valve and transmitter on the tire and wheel. Therefore, take a note of the transmitter ID before installing the tire pressure warning valve and transmitter.
- The ID registration must be performed for all tire pressure warning valve and transmitters. Check the Data List, replace the exchanged ID with a new ID, and make a new DATA LIST of all 4 tires for the vehicle.

15. REGISTER TRANSMITTER ID (USING TECHSTREAM) (Tire Pressure Warning System)
(a) Set the all tire pressure to the specified value Service Precautions.
(b) Turn the ignition switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch to ON.
(e) Turn the Techstream on.
(f) Enter the following menus: Chassis / Tire Pressure Monitor / Utility / ID Registration.
(g) Perform the following procedure displayed on the screen.
(h) Confirmation of transmitter ID registration.
(1) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(2) Read the "ID Tire Inflation Pressure" values.
(3) Confirm that the data of tire pressure of all tires are displayed on the Techstream.
NOTICE:
- It takes about 2 or 3 minutes to display the updated tire pressure data. If the values are not displayed after a few minutes, perform troubleshooting according to the inspection procedure for DTCs C2121/21 to C2124/24 C2121.
- If the IDs have not been registered, DTC C2171/71 is set in the tire pressure warning ECU after 3 minutes or more.
- If normal pressure values are displayed, the IDs have been registration correctly.
- If the tire pressure values are not displayed after a few minutes, the IDs may be incorrect or the system may have a malfunction.
- After all IDs are registered, DTC C2126/26 (Transmitter ID not Received) is set in the tire pressure warning ECU and the tire pressure warning light blinks for 1 minute and then comes on. When the tire pressure warning ECU successfully receives radio waves from all the transmitters whose IDs are stored in the ECU, DTC C2126/26 is deleted and the tire pressure warning light goes off.

16. INITIALIZATION PROCEDURE (Tire Pressure Warning System)
(a) Adjust all tire (except spare tire) to the standard tire inflation pressure, as indicated on the tire and loading information label on the vehicle.
(b) Turn the ignition switch to ON.
(c) Push and hold the tire pressure warning reset switch for 3 seconds or more so that the tire pressure warning light blinks 3 times.

(d) Turn the ignition switch off.
(e) Connect the Techstream to the DLC3.
(f) Turn the ignition switch to ON.
(g) Turn the Techstream on.
(h) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(i) Check that the initialization has been completed.

(j) Confirm that the tire pressure data of all wheels are displayed on the Techstream.
- The initialization is normally completed within 2 or 3 minutes.
- If the initialization has not been completed successfully, DTC C2177/77 is set after a vehicle speed 8 km/h (5 mph) or more continues for 20 minutes or more.
- The initialization can be terminated by connecting terminals TC and CG of the DLC3.

- The initialization is completed when the "ID Tire Information Pressure" display shows the correct pressures.
- *: It may take about 2 or 3 minutes until the values are displayed. If the values are not displayed after a few minutes, perform troubleshooting according to the inspection procedure for DTCs C2121/21 to C2124/24 C2121.