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 hybrid system 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

3. DESCRIPTION OF CODE REGISTRATION (Engine Immobiliser 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 power switch to register the key, as shown in the illustration below.

4. PART REPLACEMENT AND KEY REGISTRATION (Engine Immobiliser 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 7 keys can be registered.

5. KEY REGISTRATION (Engine Immobiliser 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) and/or the hybrid vehicle control ECU is replaced in order to match these ECU communication IDs.
- The hybrid system cannot be started unless the ECU communication IDs match.
- After the registration, pressing the power switch may not start the hybrid system on the first try. If so, press the power switch again.
- Erase DTC B2799-542, B2799-790 (code for hybrid vehicle control ECU's immobiliser communication error) by either of the following:
- Use the Techstream.
- Disconnect the auxiliary battery for 30 seconds.
(1) Using SST, connect terminals TC and CG of the DLC3.
SST: 09843-18040

(2) Turn the power switch on (IG) and leave it as is for 30 minutes.
HINT: Do not start the hybrid system.
(3) Turn the power switch off and disconnect terminals TC and CG.
(4) Check that the hybrid system starts and stays on for more than 3 seconds.
6. VEHICLE IDENTIFICATION NUMBER (VIN) REGISTRATION
NOTE: The Vehicle Identification Number (VIN) must be input into the replacement hybrid vehicle control ECU.
HINT: The VIN is a 17-digit alphanumeric vehicle identification number. Techstream is required to register the VIN.

(a) Description
(1) Read VIN: This process allows the VIN stored in the hybrid vehicle control ECU to be read, in order to confirm that the two VINs, provided with the vehicle and stored in the hybrid vehicle control ECU, are the same.
(2) Write VIN: This process allows the VIN to be input into the hybrid vehicle control ECU. If the hybrid vehicle control ECU is changed, or the hybrid vehicle control ECU VIN and the vehicle VIN do not match, the VIN can be registered, or overwritten in the hybrid vehicle control ECU by following this procedure.
(b) Read VIN
(1) Confirm the vehicle VIN.
(2) Connect the Techstream to the DLC3.
(3) Turn the power switch on (IG).
(4) Turn the Techstream on.
(5) Enter the following menus: Powertrain / Hybrid Control / Utility / VIN / VIN Read.
(c) Write VIN
(1) Confirm the vehicle VIN.
(2) Connect the Techstream to the DLC3.
(3) Turn the power switch on (IG).
(4) Turn the Techstream on.
(5) Enter the following menus: Powertrain / Hybrid Control / Utility / VIN / VIN Write.
7. IDLE SPEED CONTROL LEARNING (PERFORM INITIALIZATION) (SFI System)
(a) Apply the parking brake and chock the wheels.
(b) Connect the Techstream to the DLC3.
(c) Put the engine in the inspection mode Component Tests and General Diagnostics.
(d) Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp.
(e) Warm up the engine with the A/C switch off until the coolant temperature becomes 83°C (181°F) or more.
(f) Select the following menu items: Powertrain / Hybrid Control / Data List / State of Charge.
(g) Move the shift lever to the N position, set the A/C switch to MAX cool or turn on the front defroster, and leave the vehicle until the SOC value is below 40%.
HINT: If the SOC is substantially below 40%, the HV battery may become fully discharged. Therefore, do not allow the SOC to reach substantially below 40%.

(h) Move the shift lever to the P position and turn the power switch off.
(i) Disconnect the negative terminal from the auxiliary battery and leave it for 1 minute or more.
(j) Reconnect the negative terminal to the auxiliary battery and turn the power switch on (IG).
(k) Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp.
(l) Check that the engine coolant temperature is 83°C (181°F) or more.
HINT: If the engine coolant temperature is below 83°C (181°F), start the engine by depressing the accelerator pedal with the shift lever in the P position to increase the coolant temperature.

(m) Select the following menu items: Powertrain / Engine and ECT / Data List / Calculate Load.
(n) Move the shift lever to the D position while depressing the brake pedal with your left foot.
(o) Depress the accelerator pedal with your right foot while firmly depressing the brake pedal with your left foot, and maintain an engine load value of 45% or more (accelerator pedal depressed 60 to 70%) for approximately 30 seconds.
NOTE: Do not perform this step for 40 seconds or more.

(p) Shift the shift lever to the P position. Turn the power switch off and then wait for 5 seconds before turning the power switch on (READY).
(q) Select the following menu items: Powertrain / Engine and ECT / Data List / ISC Learning.
(r) Check that the air conditioner is off. Lightly depress the accelerator pedal and release it when the engine starts.
(s) Check that "Complete" is displayed on Techstream screen.
HINT:
- If "ISC LEARNING" is not completed within 1 minute, repeat steps (o) through (r).
- The engine will usually stop when "ISC LEARNING" is completed. However, the engine will not stop even when "ISC LEARNING" is completed in such cases when the charge level of the auxiliary battery is decreased.

8. DESCRIPTION OF CODE REGISTRATION (Tire Pressure Warning System)
It is necessary to register the transmitter IDs in the tire pressure warning ECU when replacing a 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.
(2) When replacing a tire pressure warning valve and transmitter:

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

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 onto the wheel. Therefore, take a note of the transmitter ID before installing the tire onto the wheel.

9. REGISTER TRANSMITTER ID (USING TECHSTREAM) (Tire Pressure Warning System)
(a) Set the air pressure of all tires to the specified value.
(b) Turn the power switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the power switch on (IG) and turn the Techstream on.
(e) Enter the menu items in this order: Chassis / Tire Pressure Monitor / Utility / ID Registration.
(f) Perform the following procedures displayed on the screen.
(g) Confirmation of transmitter ID registration.
(1) Enter the menu items in this order: 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 screen.
NOTICE:
- It may take up to about 2 or 3 minutes to update the 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 C2125/25 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 registered correctly.
- If the tire pressure values are not displayed after several 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 in Main Mode) 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.

10. PERFORM INITIALIZATION OF LINEAR SOLENOID VALVE AND CALIBRATION (When Using Techstream) (Electronically Controlled Brake System)
(a) Clear the stored value of linear solenoid valve and calibration data.
(1) Turn the power switch off.
(2) Check that the steering wheel is in the straight-ahead position.
(3) Check that the shift lever is in P.
(4) Connect the Techstream to the DLC3.
(5) Turn the power switch on (IG).
(6) Turn the Techstream on.
(7) Select the skid control ECU to clear the linear solenoid valve and calibration data using the Techstream. Enter the following menus: Chassis / ABS/VSC/TRAC / Utility / Reset Memory.
(8) Perform the initialization of linear solenoid valve and calibration.
(9) Perform the zero point calibration of yaw rate and acceleration sensor. Calibration
(b) Perform the initialization of linear solenoid valve and calibration.
(1) Turn the power switch off.
(2) Check that the steering wheel is in the straight-ahead position.
(3) Check that the shift lever is in P.
(4) Connect the Techstream to the DLC3.
(5) Turn the power switch on (IG) with the brake pedal released.
NOTICE:
- If the linear solenoid valve offset learning is performed without turning the power switch on (IG), the learning process may not be completed properly because of insufficient auxiliary battery voltage.
- When the linear solenoid valve offset learning is interrupted, or the learning process is performed with the shift lever not in P, DTC C1345 (linear solenoid valve offset learning undone) will be stored.
(6) Turn the Techstream on.
(7) Switch the skid control ECU to the Test Mode using the Techstream. Enter the following menus: Chassis / ABS/VSC/TRAC / Utility / ECB* Utility / Linear Valve Offset.
*: Electronically Controlled Brake System
(8) Leave the vehicle stationary without depressing the brake pedal for 1 or 2 minutes.

(9) Check that the interval between blinks of the brake warning light / yellow (minor malfunction) changes from 1 second to 0.25 seconds.
- The time needed to complete initialization of linear solenoid valve and calibration varies depending on auxiliary battery voltage.
- The brake warning light / yellow (minor malfunction) blinks at 1 second intervals during initialization of linear solenoid valve and calibration and changes to the Test Mode display.
- The brake warning light / yellow (minor malfunction) blinks at 0.25 seconds intervals if the Test Mode is normal.

(10) Check that DTC C1345 (linear solenoid valve offset learning undone) which indicates trouble with stroke sensor zero point learning is not output when the brake warning light / yellow (minor malfunction) changes to the Test Mode display upon initialization of linear solenoid valve and calibration completion.
(11) Enter the normal mode from the Test Mode following the Techstream directions.
HINT: Refer to the Techstream operator's manual for further details.