Repair Instruction: Initialization: Initialization

• *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

HINT: 

The VIN is a 17-digit alphanumeric vehicle identification number. The Techstream is required to register the VIN.

1. 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.
2. 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.
3. 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.

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.

1. 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.
   Fig 1: Identifying Engine Switch To Register Key With Communication Distance

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. 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.

   Part to be replaced	Condition		Procedure	Reference
   Certification ECU (Smart key ECU assembly)	Customer has brought all keys		1. Replace certification ECU (smart key ECU assembly)	-
   			2. Reregister all keys (New key ID registration)	PROCEDURE "B"
   	Some keys are lost	Key ID codes can be registered and erased	1. Erase key codes (Key ID erasure)	PROCEDURE "D"
   			2. Perform additional key registration procedure (Additional key ID registration)	PROCEDURE "C"
   			3. Replace certification ECU (smart key ECU assembly)	-
   			4. Reregister all keys (New key ID registration) HINT:  If some keys are not registered during the above steps, they will be disabled because they cannot be registered later.	PROCEDURE "B"
   		Key ID codes cannot be either registered or erased	1. Replace certification ECU (smart key ECU assembly)	-
   			2. Replace ID code box (immobiliser code ECU)	-
   			3. Reregister all keys (New key ID registration) HINT:  If key codes cannot be erased or additional keys cannot be registered due to a malfunction in the certification ECU (smart key ECU assembly), replace the ID code box (immobiliser code ECU) and certification ECU (smart key ECU assembly). If some keys are not registered during the above steps, they will be disabled because they cannot be registered later.	PROCEDURE "A"
   			4. Register ECU communication ID	PROCEDURE "G"
   Certification ECU (Smart key ECU assembly)	All keys are lost		1. Replace certification ECU (smart key ECU assembly)	-
   			2. Replace ID code box (immobiliser code ECU)	-
   			3. Reregister all keys (New key ID registration) HINT:  If key codes cannot be erased or additional keys cannot be registered due to a malfunction in the certification ECU (smart key ECU assembly), replace the ID code box (immobiliser code ECU) and certification ECU (smart key ECU assembly). If some keys are not registered during the above steps, they will be disabled because they cannot be registered later.	PROCEDURE "A"
   			4. Register ECU communication ID	PROCEDURE "G"
   ID code box (Immobiliser code ECU)	Customer has brought at least 1 key		1. Replace ID code box (immobiliser code ECU)	-
   			2. Register recognition codes in ECUs (ECU code registration)	PROCEDURE "F"
   			3. ECU communication ID registration	PROCEDURE "G"
   	All keys are lost		1. Replace ID code box (immobiliser code ECU)	-
   			2. Replace certification ECU (smart key ECU assembly)	-
   			3. Reregister all keys (New key ID registration) HINT:  If some keys are not registered during the above steps, they will be disabled because they cannot be registered later.	PROCEDURE "A"
   			4. Register ECU communication ID	PROCEDURE "G"
   Steering lock ECU	Customer has brought at least 1 key		1. Replace steering lock ECU	-
   			2. Register recognition codes in ECUs (ECU code registration)	PROCEDURE "F"
   	All keys are lost		1. Replace steering lock ECU	-
   			2. Replace certification ECU (smart key ECU assembly)	-
   			3. Replace ID code box (immobiliser code ECU)	-
   			4. Reregister all keys (New key ID registration) HINT:  If some keys are not registered during the above steps, they will be disabled because they cannot be registered later.	PROCEDURE "A"
   			5. Register ECU communication ID	PROCEDURE "G"
   Main body ECU (Instrument panel junction block)	No condition required		Replace main body ECU (instrument panel junction block)	-
   ECM	No condition required		1. Replace ECM	-
   			2. Register ECU communication ID	PROCEDURE "H"
   Key (for replacement)	Customer has brought at least 1 key		1. Using remaining key, erase lost key code (Key ID erasure)	PROCEDURE "D"
   			2. Register additional keys as necessary (Additional key ID registration)	PROCEDURE "C"
   	All keys are lost		1. Erase all key codes (All key ID erasure)	PROCEDURE "E"
   			2. Register all keys (New key ID registration) HINT:  If the customer brings lost keys at a later date, they can be registered using the additional key ID registration function.	PROCEDURE "A"
   Key (for addition)	Customer has brought at least 1 key HINT:  When adding keys (Additional registration)		1. Register additional keys as necessary (Additional key ID registration)	PROCEDURE "C"

1. 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)

   Process	Procedure
   1. Start of registration	Connect the Techstream to DLC3 Turn the engine switch on (IG) Enter the following menus: Body Electrical / Smart Key / Utility / Smart Code Registration HINT: The engine switch cannot be turned on (IG) more than 10 times. After connecting the Techstream, turn the Techstream on while turning the driver's side door courtesy light switch on and off repeatedly at 1.5-second intervals or less to continue key registration procedure.
   2. Confirmation of ECU code	Perform operation according to prompts on the Techstream screen HINT: Mode is automatically selected by the Techstream (new registration mode or add mode).
   3. Verification of unregistered key*1	Hold the unregistered key close to the engine switch (For details, refer to "Description of Code Registration") Confirm that the wireless door lock buzzer sounds once (short beep) Place the unregistered key on the driver's seat Confirm that the wireless door lock buzzer sounds once (short beep)
   4. Registration of ID code	Perform operation according to prompts on the Techstream screen
   5. End of registration	Finish new key ID code registration

   • *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.
2. PROCEDURE "B"

   New key ID registration (when replacing the certification ECU (smart key ECU assembly))

   Process	Procedure
   1. Start of registration	Connect the Techstream to DLC3 Turn the engine switch on (IG) Enter the following menus: Body Electrical / Smart Key / Utility / Smart Code Registration HINT: The engine switch cannot be turned on (IG) more than 10 times. After connecting the Techstream, turn the Techstream on while turning the driver's side door courtesy light switch on and off repeatedly at 1.5-second intervals or less to continue key registration procedure.
   2. Confirmation of ECU code	Perform operation according to prompts on the Techstream screen HINT: Mode is automatically selected by the Techstream (new registration mode or add mode).
   3. Confirmation of all registered keys*1	Hold the registered key close to the engine switch (For details, refer to "Description of Code Registration") Confirm that wireless door lock buzzer sounds once (short beep)
   4. Confirmation of ECU code	Perform operation according to prompts on the Techstream screen
   5. Verification of unregistered key*2	Hold the unregistered key close to the engine switch (For details, refer to "Description of Code Registration") Confirm that wireless door lock buzzer sounds once (short beep) Place the unregistered key on the driver's seat Confirm that the wireless door lock buzzer sounds once (short beep)
   5. Registration of ID code	Perform operation according to prompts on the Techstream screen
   6. End of registration	Finish new key ID code registration

   • *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.
3. PROCEDURE "C"

   Additional key ID registration

   Process	Procedure
   1. Start of registration	Connect the Techstream to DLC3 Turn the engine switch on (IG) Enter the following menus: Body Electrical / Smart Key / Utility / Smart Code Registration
   2. Confirmation of registered key*1	Perform operation according to prompts on the Techstream screen HINT:  Mode is automatically selected by the Techstream (new registration mode or add mode) Hold the registered key close to the engine switch (For details, refer to "Description of Code Registration") Confirm that the wireless door lock buzzer sounds once (short beep)
   3. Confirmation of ECU code	Perform operation according to prompts on the Techstream screen
   4. Verification of unregistered key*2	Hold the unregistered key close to the engine switch (For details, refer to "Description of Code Registration") Confirm that the wireless door lock buzzer sounds once (short beep) Place the unregistered key on driver's seat Confirm that the wireless door lock buzzer sounds once (short beep)
   5. Registration of ID code	Perform operation according to prompts on the Techstream screen
   6. End of registration	Finish additional key ID 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 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.
4. PROCEDURE "D"

   Key ID erasure

   HINT: 

   Erase all registered key codes except one.

   Process	Procedure
   1. Start of erasure	Connect the Techstream to DLC3 Turn the engine switch on (IG) Enter the following menus: Body Electrical / Smart Key / Utility / Smart Code Erasure
   2. Confirmation of registered key*1 HINT:  Select the key that will not be erased.	Perform operation according to prompts on the Techstream screen Hold the registered key close to engine switch (For details, refer to "Description of Code Registration") Confirm that the wireless door lock buzzer sounds once (short beep)
   3. Confirmation of ECU code	Perform operation according to prompts on the Techstream screen
   4. Erasure of ID code	Perform operation according to prompts on the Techstream screen
   5. End of erasure	Finish key ID code erasure

   • *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.
5. PROCEDURE "E"

   All key ID erasure

   HINT: 

   All the key codes registered in the vehicle are erased.

   Process	Procedure
   1. Start of erasure	Connect the Techstream to DLC3 Turn the engine switch on (IG) Turn the Techstream on while turning driver side door courtesy light switch on and off repeatedly at 1.5-second intervals or less Enter the following menus: Body Electrical / Smart Key / Utility / Smart Code Erasure
   2. Confirmation of ECU code	Perform operation according to prompts on the Techstream screen
   3. Erasure of ID code	Perform operation according to prompts on the Techstream screen
   4. End of erasure	Finish key ID code erasure

6. PROCEDURE "F"

   ECU code registration

   Process	Procedure
   1. Start of registration	Connect the Techstream to DLC3 Turn the engine switch on (IG) Enter the following menus: Body Electrical / Smart Key / Utility / ECU Communication ID Registration
   2. Confirmation of registered key*1	Hold the registered key close to engine switch (For details, refer to "Description of Code Registration") Confirm that the wireless door lock buzzer sounds once (short beep)
   3. Registration of ECU code	Perform operation according to prompts on the Techstream screen
   4. End of registration	Finish 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.
7. PROCEDURE "G"

   ECU communication ID registration

   NOTE:

   • 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 
      Fig 2: Connecting Terminals TC And CG Of DLC3

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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.
8. 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.

   Procedure	Security Indicator Light Condition
   1. Start	OFF
   2. Hold an already registered key close to the engine switch and turn the engine switch on (IG) with the brake pedal depressed
   3. Check that the engine starts and stays running for more than 3 seconds
   4. Next
   5. End

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.

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

      Target ECU	Refer to
      Transponder key ECU assembly	Procedure "B"

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

      Target ECU	Refer to
      Transponder key ECU assembly	Procedure "A"

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

      Target ECU	Refer to
      ECM	Procedure "D"

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

      Target ECU	Refer to
      Transponder key ECU assembly	Procedure "E"

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

      Target ECU	Refer to
      Transponder key ECU assembly	Procedure "A"

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

      Target ECU	Refer to
      Transponder key ECU assembly	Procedure "E"

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

      Target ECU	Refer to
      Transponder key ECU assembly	Procedure "C"

1. 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)
   
   

   Procedure	Security Indicator Light Condition
   1. Start	Blinking HINT:  Until first key is inserted
   2. Insert the master key into the ignition key cylinder.	ON
   3. Techstream operation Select Body Electrical Select Immobiliser Select Utility Select Key Registration HINT:  After completing the above operation, proceed to the next step in accordance with the prompts on the Techstream screen.	OFF for 1 second and then ON
   4. Remove the key and then select Next on the Techstream.	ON
   5. Insert the master key to be registered and then select Next on the Techstream.	OFF for 1 second and then ON
   6. Remove the key and then select Next on the Techstream.	ON
   7. Insert the sub-key to be registered and then select Next on the Techstream.	OFF for 1 second and then ON for 0.5 seconds and then OFF
   8. Remove the key.	Blinking
   9. End (Procedure "E")

   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.
   Fig 3: Identifying Security Indicator Light Blinking Pattern

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. 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.

1. 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
   
   

   Procedure	Time to Complete Operation	Security Indicator Light Condition
   1. Start	-	Blinking HINT:  Until first key is inserted
   2. Insert the already registered master key into the ignition key cylinder and turn the ignition switch to ON.	-	OFF
   3. Techstream operation Select Body Electrical Select Immobiliser Select Utility Select Key Registration HINT:  After completing the above operation, proceed to the next step in accordance with the prompts on the Techstream screen.	Within 120 sec.	ON
   4. Remove the master key.	Within 20 sec. HINT:  After the Techstream instruction	ON
   5. Insert the key to be registered in the ignition key cylinder.	Within 10 sec.	Blinking
   6. Wait for 60 sec. after the key is registered. HINT:  The security indicator light goes off.	-	OFF
   7. Remove the key.	-	Blinking
   8. End

   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".

1. 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
   
   

   Procedure	Time to Complete Operation	Security Indicator Light Condition
   1. Start	-	Blinking HINT:  Until first key is inserted
   2. Insert the already registered master key in the ignition key cylinder and turn the ignition switch to ON.	-	OFF
   3. Techstream operation Select Body Electrical Select Immobiliser Select Utility Select Transponder Code Erasure HINT:  After completing the above operation, proceed to the next step in accordance with the prompts on the Techstream screen.	Within 120 sec.	ON for 1 sec. then OFF
   4. Remove the master key.	Within 10 sec. HINT:  After the Techstream instruction	ON
   5. End

   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.

1. ECU communication ID registration (Procedure "D"):
   NOTE:

   • 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 
      Fig 4: Connecting Terminals TC And CG Of DLC3

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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.
2. 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.

   Procedure	Security Indicator Light Condition
   1. Start	OFF
   2. Insert an already registered key into the ignition key cylinder.
   3. Start the engine.
   4. Check that the engine starts and stays on for more than 3 seconds.
   6. End

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.

1. Turn the ignition switch off.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to ON and the Techstream main switch on.
4. Enter the following menus: Powertrain / Engine and ECT / Utility / Reset Memory. Then, press "Next".
   WARNING:

   After performing the RESET MEMORY, be sure to perform the ROAD TEST. Refer to ROAD TEST described earlier.

   HINT: 

   The ECM is learned by performing the ROAD TEST.

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.

1. Turn the ignition switch off.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to ON and the Techstream main switch on.
4. Enter the following menus: Powertrain / Engine and ECT / Utility / Reset Memory. Then, press "Next".
   WARNING:

   After performing the RESET MEMORY, be sure to perform the ROAD TEST. Refer to ROAD TEST described earlier.

   HINT: 

   The ECM is learned by performing the ROAD TEST.

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.

1. 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. Refer to PRECAUTION .
   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.
        Fig 5: Identifying Tire Pressure Warning Valve And Transmitter

        Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      • 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.

1. Set the all tire pressure to the specified value. Refer to PRECAUTION .
2. Turn the ignition switch off.
3. Connect the Techstream to the DLC3.
4. Turn the ignition switch to ON.
5. Turn the Techstream on.
6. Enter the following menus: Chassis / Tire Pressure Monitor / Utility / ID Registration.
7. Perform the following procedure displayed on the screen.
8. 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.
      NOTE:

      • 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. Refer to DTC C2121/21: No Signal from Transmitter ID1; DTC C2122/22: No Signal from Transmitter ID2; DTC C2123/23: No Signal from Transmitter ID3; DTC C2124/24: No Signal from Transmitter ID4; DTC C2181/81: Transmitter ID1 not Received (Test Mode DTC); DTC C2182/82: Transmitter ID2 not Received (Test Mode DTC); DTC C2183/83: Transmitter ID3 not Received (Test Mode DTC); DTC C2184/84: Transmitter ID4 not Received (Test Mode DTC) .
      • 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.

1. Adjust all tire (except spare tire) to the standard tire inflation pressure, as indicated on the tire and loading information label on the vehicle.
2. Turn the ignition switch to ON.
3. Push and hold the tire pressure warning reset switch for 3 seconds or more so that the tire pressure warning light blinks 3 times.
   Fig 6: Identifying Tire Pressure Warning Light And Tire Pressure Warning Light Output Pattern

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Turn the ignition switch off.
5. Connect the Techstream to the DLC3.
6. Turn the ignition switch to ON.
7. Turn the Techstream on.
8. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
9. Check that the initialization has been completed.
10. Confirm that the tire pressure data of all wheels are displayed on the Techstream.
    Fig 7: Identifying DLC3 Connector Terminals

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:

    • 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.

    TIRE PRESSURE MONITOR

    
    

    Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
    ID1 Tire Inflation Pressure	ID1 tire inflation pressure/ min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1.0 kgf/cm2 , -14 psi) max.: Absolute pressure / 638 kPa (6.4 kgf/cm2 , 93 psi), Relative pressure / 538 kPa (5.4 kgf/cm2 , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
    ID2 Tire Inflation Pressure	ID2 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1.0 kgf/cm2 , -14 psi) max.: Absolute pressure / 638 kPa (6.4 kgf/cm2 , 93 psi), Relative pressure / 538 kPa (5.4 kgf/cm2 , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
    ID3 Tire Inflation Pressure	ID3 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1.0 kgf/cm2 , -14 psi) max.: Absolute pressure / 638 kPa (6.4 kgf/cm2 , 93 psi), Relative pressure / 538 kPa (5.4 kgf/cm2 , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
    ID4 Tire Inflation Pressure	ID4 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1.0 kgf/cm2 , -14 psi) max.: Absolute pressure / 638 kPa (6.4 kgf/cm2 , 93 psi), Relative pressure / 538 kPa (5.4 kgf/cm2 , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*

    HINT: 

    • 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. Refer to DTC C2121/21: No Signal from Transmitter ID1; DTC C2122/22: No Signal from Transmitter ID2; DTC C2123/23: No Signal from Transmitter ID3; DTC C2124/24: No Signal from Transmitter ID4; DTC C2181/81: Transmitter ID1 not Received (Test Mode DTC); DTC C2182/82: Transmitter ID2 not Received (Test Mode DTC); DTC C2183/83: Transmitter ID3 not Received (Test Mode DTC); DTC C2184/84: Transmitter ID4 not Received (Test Mode DTC) .

1. Clear the zero point calibration data.
   1. Turn the ignition switch off.
   2. Check that the steering wheel is centered.
   3. Check that the shift lever is in P (for automatic transaxle model) or the parking brake is applied (for manual transaxle model).
   4. Connect the Techstream to the DLC3.
   5. Turn the ignition switch to ON.
   6. Turn the Techstream on.
   7. Select the skid control ECU to clear the zero point calibration data using the Techstream. Enter the following menus: Chassis / ABS/VSC/TRAC / Utility / Reset Memory.
   8. Turn the ignition switch off.
      NOTE:

      If the ignition switch is turned to ON for more than 15 seconds with the shift lever in P (for automatic transaxle model) or the parking brake applied (for manual transaxle model) after zero point of the yaw rate and acceleration sensor has been cleared, only the zero point of the yaw rate sensor will be stored. If the vehicle is driven under these conditions, the skid control ECU will store the zero point calibration for the acceleration sensor as not being completed. The skid control ECU will then also indicate this as a malfunction of the VSC system using the indicator lights.

2. Perform zero point calibration of the yaw rate and acceleration sensor.
   1. Turn the ignition switch off.
   2. Check that the steering wheel is centered.
   3. Check that the shift lever is in P (for automatic transaxle model) or the parking brake is applied (for manual transaxle model).
      NOTE:

      DTCs C1210/36 and C1336/39 will be recorded if the shift lever is not in P (for automatic transaxle model) or the parking brake is not applied (for manual transaxle model).

   4. Connect the Techstream to the DLC3.
   5. Turn the ignition switch to ON.
   6. Turn the Techstream on.
   7. Switch the skid control ECU to Test Mode using the Techstream. Enter the following menus: Chassis / ABS/VSC/TRAC / Utility / Test Mode.
   8. After the system enters Test Mode, keep the vehicle stationary on a level surface for 2 seconds or more.
   9. Check that the VSC OFF indicator light comes on for several seconds and then blinks in Test Mode.
      Fig 8: ABS And VSC OFF Indicator Light Test Mode Blinking Pattern

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      • The slip indicator light remains on during Test Mode because traction control operation is prohibited (The slip indicator light goes off when the VSC OFF switch is on).
      • If the VSC OFF indicator light does not blink, perform zero point calibration again.
      • The zero point calibration is performed only once after the system enters Test Mode.
      • Calibration cannot be performed again until the stored data is cleared.
   10. Turn the ignition switch off and disconnect the Techstream.

1. Clear the zero point calibration data.
   1. Turn the ignition switch off.
   2. Check that the steering wheel is centered.
   3. Check that the shift lever is in P (for automatic transaxle model) or the parking brake is applied (for manual transaxle model).
   4. Turn the ignition switch to ON.
   5. The warning and indicator light come on for 3 seconds to indicate that the initial check is completed.
   6. Using SST, connect and disconnect terminals TS and CG of the DLC3 4 times or more within 8 seconds.
      Fig 9: Identifying DLC3 Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • SST: 09843-18040 
   7. Check that the VSC OFF indicator light comes on.
      NOTE:

      If the ignition switch is turned to ON for more than 15 seconds with the shift lever in P (for automatic transaxle model) or the parking brake applied (for manual transaxle model) after zero point of the yaw rate and acceleration sensor has been cleared, only the zero point of the yaw rate sensor will be stored. If the vehicle is driven under these conditions, the skid control ECU will store the zero point calibration for the acceleration sensor as not being completed. The skid control ECU will then also indicate this as a malfunction of the VSC system using the indicator lights.

2. Perform zero point calibration of the yaw rate and acceleration sensor.
   1. Turn the ignition switch off.
   2. Check that the steering wheel is centered.
   3. Check that the shift lever is in P (for automatic transaxle model) or the parking brake is applied (for manual transaxle model).
      NOTE:

      DTCs C1210/36 and C1336/39 will be recorded if the shift lever is not in P (for automatic transaxle model) or the parking brake is not applied (for manual transaxle model).

   4. Using SST, connect terminals TS and CG of the DLC3.
      Fig 10: Identifying DLC3 Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • SST: 09843-18040 
   5. Turn the ignition switch to ON.
   6. Keep the vehicle stationary on a level surface for 2 seconds or more.
   7. Check that the VSC OFF indicator light comes on for several seconds and then blinks in Test Mode.
      Fig 11: ABS And VSC OFF Indicator Light Test Mode Blinking Pattern

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      • The slip indicator light remains on during Test Mode because traction control operation is prohibited (The slip indicator light goes off when the VSC OFF switch is on).
      • If the VSC OFF indicator light does not blink, perform zero point calibration again.
      • The zero point calibration is performed only once after the system enters Test Mode.
      • Calibration cannot be performed again until the stored data is cleared.
   8. Turn the ignition switch off and disconnect SST from the DLC3.

1. Inspection before calibration.
   1. Turn the ignition switch off.
   2. Connect the Techstream to the DLC3.
   3. Turn the ignition switch to ON.
   4. Turn the Techstream on.
   5. Calibrate the power steering ECU. Enter the following menus: Chassis / EMPS / Data List.
   6. Check the values by referring to the table below.
      POWER STEERING ECU
      
      

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      IG Power Supply	ECU power source voltage / Min.: 0 V, Max.: 20.1531 V	11 to 14 V	Ignition switch to ON

      Standard voltage

      11 to 14 V

      NOTE:

      If the IG power supply voltage is 9 V or less, calibration cannot be performed. In this case, charge or replace the battery, and then perform calibration.

2. Rotation angle sensor calibration value clear, rotation angle sensor initialization, and torque sensor zero point calibration.
   NOTE:

   • If DTC C1516 (Torque Sensor Zero Point Adjustment Incomplete) is stored, the torque sensor zero point cannot be calibrated. Clear the DTC before starting calibration.
   • If DTC C1526 (Rotation Angle Sensor Initialization Incomplete) is stored, the rotation angle sensor cannot be initialized. Clear the DTC before starting initialization.
   1. Turn the ignition switch off.
   2. Connect the Techstream to the DLC3.
   3. Turn the ignition switch to ON.
   4. Turn the Techstream on.
   5. Enter the following menus: Chassis / EMPS / Utility / Torque Sensor Adjustment.
      NOTE:

      • Set the steering wheel to the center point and align the front tires straight ahead.
      • Do not turn the steering wheel sharply.
      • Do not touch the steering wheel during the torque sensor zero point calibration (for 3 seconds).

HINT: 

Perform the assist map writing when the power steering ECU is replaced.

1. Turn the ignition switch off.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to ON.
4. Turn the Techstream on.
5. Enter the following menus: Chassis / EMPS / Assist Map.
6. Wait for 7 seconds or more.
7. Check for DTCs.

   HINT: 

   If DTC C1581 is output, perform the troubleshooting for DTC C1581. Refer to DIAGNOSTIC TROUBLE CODE CHART .

1. Perform the torque sensor zero point calibration.
   NOTE:

   If DTC C1516 (Torque Sensor Zero Point Adjustment Incomplete) is stored, the torque sensor zero point cannot be calibrated. Clear the DTC before starting calibration.

   1. Set the steering wheel to the center point and align the front wheels straight ahead.
   2. Turn the ignition switch off.
   3. Connect the Techstream to the DLC3.
   4. Turn the ignition switch to ON.
   5. Turn the Techstream on.
   6. Calibrate the power steering ECU. Enter the following menus: Chassis / EMPS / Utility / Torque Sensor Adjustment.
      NOTE:

      • Do not touch the steering wheel during the torque sensor zero point calibration.
      • Do not start the engine.
      • Perform the calibration only when the vehicle is stopped.
   7. Check for DTCs. Refer to DTC CHECK / CLEAR .
      NOTE:

      • After zero point calibration is completed normally, confirm that DTC is not output.
      • If DTC C1515, C1516 or C1534 is output, perform troubleshooting for the corresponding DTC.

        Result

        Result	See Procedure
        DTC C1515 is output.	Refer to DTC C1515: Torque Sensor Zero Point Adjustment Undone
        DTC C1516 is output.	Refer to DTC C1516: Torque Sensor Zero Point Adjustment Incomplete
        DTC C1534 is output.	Refer to DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction; DTC C1535: ECU Malfunction

HINT: 

• Register a new recognition code when replacing the door control transmitter or the door control receiver.
• Add mode is used to retain the already registered codes while registering a new recognition code. This mode is used when adding a transmitter. If the number of registered codes exceeds 6, the previously registered code will be correspondingly erased in order, starting from the code registered first.
• Rewrite mode is used to erase all the previously registered codes and register only new recognition codes. This mode is used when exchanging the transmitter or the door control receiver for new one.
• Confirmation mode is used to confirm how many recognition codes have already been registered before an additional registration of a recognition code.
• Prohibition mode is used to erase all the registered codes and cancel the wireless door lock function. Use this mode when the transmitter is lost.
• All of the steps in the following registration procedure must be performed in sequential order continuously.

1. The following conditions should be met.
   1. No key is inserted in the ignition key cylinder.
   2. Only driver side door is opened.
2. Perform the following operations to select the desired mode.
   1. Insert and remove the key from the ignition switch twice within 5 seconds. (End in removed)
   2. After the above operation, close and open the driver's door twice. (End in open)

      Then insert the key into the ignition key cylinder and remove it.

      HINT: 

      Complete this procedure within 40 seconds.

   3. After the above operations, close and open the driver side door twice. (End in open)

      Then insert the key into the ignition key cylinder and close the door.

      HINT: 

      Complete this procedure within 40 seconds.

   4. Turn the ignition switch from LOCK to ON and back to LOCK at approximately 1 second intervals 1 to 5 times to select a mode (see the illustration). Then remove the key from the ignition key cylinder.
      Fig 12: Identifying Ignition Switch On-Lock Operations Numbers

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      Complete this procedure within 40 seconds.

      NOTE:

      If the number of the ON-LOCK operations of the ignition switch is 0, 4, 6 or more, there will be no response to inform which mode has been selected.

   5. After selecting a mode, the main body ECU automatically performs the power door LOCK- UNLOCK operation within 5 seconds to inform the selected mode (see the illustration).
      Fig 13: Blinking Pattern Of Power Door Lock

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      • In confirmation mode, the LOCK- UNLOCK operation will occur once for each recognition code that has been registered. For example, if 2 recognition codes have been registered, the LOCK-UNLOCK operation will occur 2 times.
      • In confirmation mode and prohibition mode, once a LOCK-UNLOCK operation response has occurred, the registration procedure will end.
3. Register new recognition codes (Add mode or Rewrite mode):
   1. Within 45 seconds after add mode or rewrite mode has been selected, press the LOCK and UNLOCK switches on the transmitter switch simultaneously for 1.0 to 1.5 seconds.

      Then, press either one of the switches for more than 1.0 second (Procedure "A").

   2. Within 5 seconds after the transmitter switch has been released, the LOCK-UNLOCK operation will be automatically performed once if the registration of the recognition code of the transmitter is completed correctly.

      If the LOCK-UNLOCK operation is performed twice, registration of the recognition code has failed. Perform the registration procedure from the beginning (Procedure "B").

      Fig 14: Blinking Pattern For Power Door LOCK-UNLOCK Operation

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. If multiple transmitters need to be registered, repeat procedures "A" and "B" within 45 seconds each.

      HINT: 

      • Up to 6 recognition codes can be registered at once.
      • If even one of the following conditions is satisfied, registration mode will end.
        • 40 seconds have elapsed after a recognition code has been registered.
        • Any of the doors are opened.
        • The key is inserted into the ignition key cylinder.
        • 6 recognition codes are registered.

HINT: 

• Register a new recognition code when replacing the door control transmitter or the door control receiver.
• Add mode is used to retain the already registered codes while registering a new recognition code. This mode is used when adding a transmitter. If the number of registered codes exceeds 6, the previously registered code will be correspondingly erased in order, starting from the code registered first.
• Rewrite mode is used to erase all the previously registered codes and register only new recognition codes. This mode is used when exchanging the transmitter or the door control receiver for new one.
• Confirmation mode is used to confirm how many recognition codes have already been registered before an additional registration of a recognition code.
• Prohibition mode is used to erase all the registered codes and cancel the wireless door lock function. Use this mode when the transmitter is lost.
• All of the steps in the following registration procedure must be performed in sequential order continuously.

1. Turn the ignition switch to ON.
2. Select either add or rewrite mode according to the Techstream display.
3. The number of registered codes is indicated.
4. Registration of the door control transmitter.
   1. If either add mode or rewrite mode has been selected, press the LOCK and UNLOCK switches on the transmitter simultaneously.
   2. Within 3 seconds of releasing the LOCK and UNLOCK switches, press either of the switches on the door control transmitter.
      NOTE:

      • Do not press the LOCK and UNLOCK switches simultaneously for more than 1.5 seconds.
      • Perform this operation within 1 meter of the driver's seat to register the transmitter.
      • Do not push other transmitter switches during the transmitter registration process.
   3. The main body ECU automatically performs the power door LOCK-UNLOCK operation once in order to indicate whether registration has been completed correctly or not.
   4. If continuing registration, the next recognition code must be registered in the door control transmitter within 30 seconds.

      HINT: 

      Up to 6 recognition codes can be registered.

5. Completing registration mode.
   1. Registration mode will end when any of the following occurs:
      • 30 seconds or more have elapsed after a code is registered.
      • The Techstream is used to finish registration.
      • The Techstream is disconnected.
      • The ignition switch is turned off.
6. Perform the following after registration is completed.
   1. Perform the wireless door lock control operation check. Refer to OPERATION CHECK .

      HINT: 

      If the wireless door lock control does not operate, perform the registration procedure again.

1. Zero point calibration procedures
   1. Check that all of the following conditions are met:
      • The vehicle is parked on a flat surface.
      • No objects are placed on the front passenger seat.
      • The front passenger seat belt buckle switch is OFF.
   2. Adjust the seat position according to the table below.

      Adjustment Item	Position
      Slide Direction	Rearmost position
      Reclining Angle	Upright position
      Headrest Height	Lowest position
      Lifter Height	Lowest position

   3. Connect the Techstream to the DLC3.
   4. Turn the ignition switch to ON.
   5. Enter the following menus: Body Electrical / Occupant Detection / Utility / Zero Point Calibration.
   6. Perform the zero point calibration by following the prompts on the Techstream screen.

      HINT: 

      • Refer to the Techstream operator's manual for further details.
      • If the zero point calibration is performed when the calibration conditions are not satisfied, DTC B1797 is output.
      • If the zero point calibration has failed, DTC B1797 is output.
      • If After Exchange is selected before the previous ECU data are stored in the Techstream, the display screen returns to CONDITION SELECT ECU: Occupant Detect.

        Item	Procedure
        DTC	Perform DTC check and repair
        Write error	Replace front seat cushion assembly (with occupant classification ECU and occupant classification sensor)
        Temperature	Check value of THERMISTOR TEMP in ECU DATA LIST
        Pressure	Check value of FILTERED PRESS in ECU DATA LIST
        Crash counter	-

1. Sensitivity check procedures
   1. Turn the ignition switch off.
   2. Place a 20 kg (44.0 lb) weight on the front passenger seat.
      Fig 15: Identifying Front Passenger Seat

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      • Do not allow the weight to come into contact with the seatback when placing it on the seat cushion.
      • Place the weight in the area shown in the illustration.
   3. Turn the ignition switch to ON, and wait for at least 6 seconds.
   4. Check that the passenger airbag ON/OFF indicator indicates OFF.

      OK

      The passenger airbag ON/OFF indicator indicates OFF.

   5. Add a 30 kg (66.1 lb) weight to the front passenger seat (total 50 kg (110.2 lb)).
      NOTE:

      • Do not allow the weight to come into contact with the seatback when placing it on the seat cushion.
      • Place the weight in the area shown in the illustration.
   6. Check that the passenger airbag ON/OFF indicator indicates ON.

      OK

      The passenger airbag ON/OFF indicator indicates ON.

HINT: 

• When the occupant classification ECU is replaced, the previous ECU data must be saved in the Techstream and loaded into the new ECU by following the procedure below.
• Until the data from the previous ECU are loaded into the new occupant classification ECU, these data are not cleared even when the Techstream is turned off.
• ECU EXCHANGE PROCEDURE (Before Exchange) describes the procedure to save the data in the Techstream from the occupant classification ECU installed on the vehicle. ECU EXCHANGE PROCEDURE (After Exchange) describes the procedure to load the data from the previous ECU, stored in the Techstream, into the new ECU.

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Store the occupant classification ECU data in the Techstream by following the prompts on the Techstream screen.

   HINT: 

   If the ECU data cannot be stored in the Techstream, replace the front seat cushion assembly (with occupant classification ECU and occupant classification sensor).

4. Turn the ignition switch to ON.
5. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
6. Replace the occupant classification ECU. Refer to REMOVAL .
7. Connect the cable to the negative (-) battery terminal.
8. Turn the ignition switch to ON.
9. Load the data from the previous ECU stored in the Techstream into the newly installed ECU by following the prompts on the Techstream screen.
10. Turn the ignition switch off.
11. Turn the ignition switch to ON.
12. Clear the DTCs stored in the memory. Refer to DTC CHECK / CLEAR .

    HINT: 

    If the DTCs are not cleared at this time, past DTCs will remain.

1. Turn the ignition switch to ON.
2. Make sure that the sliding roof is fully closed.
3. Press the TILT UP switch until the sliding roof stops at the fully tilt up position. Then release the switch.
4. Press and hold the TILT UP switch until the following movement finishes and then release the switch: approximately 10 seconds → tilt up (approximately 5 mm) → tilt down (approximately 5 mm).
5. Within 5 seconds after finishing the previous step, press and hold the TILT UP switch until the following movement finishes and then release the switch: approximately 5 seconds → tilt down → fully closed → slide open → fully open → slide close → fully closed.
6. Finish the initialization.
7. Check that the AUTO operation works normally.
   NOTE:

   If the following conditions occur during initialization procedure, initialization will fail:

   • One of the following electric loads is given to the vehicle during the initialization: Cranking the engine, Power window operation, Rear defogger operation, Blower operation, Power seat operation, Power door lock operation or Headlight illumination.
   • The ignition switch is turned off.
   • Another switch is turned on during initialization.
   • The vehicle experiences a strong vibration during initialization, such as slamming of a door.

   HINT: 

   • If the sliding roof cannot be fully closed or its position has become misaligned, perform initialization again.
   • If the roof glass stops moving or starts moving in the opposite direction while the CLOSE/UP switch is held down, continue to hold the switch for another 10 seconds or more to return the sliding roof control ECU to an uninitialized condition. Then perform the initialization procedure again.
   • If the AUTO operation function and jam protection function do not operate after the drive gear has been reset, replace the sliding roof drive gear sub-assembly (sliding roof control ECU).