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Home >> Lexus Truck >> 2010 >> RX 450h FWD V6-3.5L (2GR-FXE) Hybrid >> Repair and Diagnosis >> Testing and Inspection >> Programming and Relearning >> Repair Instruction - Initialization >> From 08/2009 >> Part 4

Part 4





INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION

26. DESCRIPTION OF CODE REGISTRATION (Engine Immobilizer System)

HINT
* The ID codes are the same as recognition codes for the wireless transmitter and the engine immobilizer function. Registering an ID code enables the smart access system with push-button start, the wireless door lock control function and the engine immobilizer function to be operated.
* Code registration is necessary when the certification ECU (smart key ECU assembly), ID code box (immobilizer code ECU), steering lock ECU (steering lock actuator assembly) or key is replaced with a new one.
* The key (for card type) can be registered using the same procedure as the key (for standard).
(a) Vehicles with the smart access system with push-button start do not have a key slot. Therefore, hold the key close to the power switch to register the key as shown in the illustration.





27. KEY REGISTRATION PROCEDURES WHEN ADDING OR REPLACING KEY OR WHEN KEY IS LOST (Engine Immobilizer System)

HINT
* The following procedures require the use of the Techstream:
* - New key ID registration
* - Additional key ID registration
* - Key ID erasure
* A maximum of 7 keys can be registered.






28. PART REPLACEMENT AND KEY REGISTRATION PROCEDURES (Engine Immobilizer 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 access system with push-button start.

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 (immobilizer code ECU) is also required.
* A maximum of 7 keys can be registered.










29. KEY REGISTRATION (Engine Immobilizer System)

(a) PROCEDURE "A"

New key ID registration (when replacing the certification ECU (smart key ECU assembly) and ID code box (immobilizer code ECU), or when replacing the certification ECU (smart key ECU assembly), ID code box (immobilizer code ECU) and steering lock ECU (steering lock actuator assembly))





* *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 which is not 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. 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 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.

(c) PROCEDURE "C"

Additional key ID registration





* *1: Perform this process for one of the keys which are to be 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 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.

(d) PROCEDURE "D"

Key ID erasure

HINT
Procedure "D" erases all registered key codes except one.

NOTICE:
Do not erase all registered key codes except one key (for card type) while the smart access system with push-button start system key cancel is activated. By doing so, the smart access system with push-button start system cannot be returned to its original condition using the key cancel operation. In addition, the entry unlock switching function cannot be used. However, erasing all registered key codes except one key (for card type) will not cause problems if registering additional keys (for standard).





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

(e) PROCEDURE "E"

All key ID erasure

HINT
Procedure "E" erases all the key codes registered in the vehicle.





(f) PROCEDURE "F"

ECU code registration





* *1: Perform this process for one of the keys which are to be 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 (immobilizer code ECU) is replaced in order to match these ECU communication IDs.
* The hybrid vehicle control system cannot be started unless the ECU communication IDs match.
* After the registration, pressing the power switch may not start the hybrid vehicle control system on the first try. If so, press the power switch again.
* Clear DTC B2799 (code for power management control ECU (HV CPU) immobilizer communication error) by either of the following:
* - Use the Techstream.
* - Disconnect the cable from the negative (-) battery terminal 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 vehicle control system.

(3) Turn the power switch off and disconnect terminals TC and CG.

(4) Check that the hybrid vehicle control system starts and remains READY for more than 3 seconds.

30. ZERO POINT CALIBRATION (Occupant Classification System)

(a) Zero point calibration procedure

HINT
Make sure that zero point calibration has finished normally, and then perform the sensitivity check.

(1) Check that all of the following conditions are met:

* The vehicle is parked on a level 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.





(3) Turn the power switch off.

(4) Connect the Techstream to the DLC3.

(5) Turn the power switch on (IG).

(6) Turn the Techstream on.

(7) Enter the following menus: Body Electrical / Occupant Detection / Utility / Zero Point Calibration.

(8) Perform zero point calibration by following the prompts on the Techstream screen.

HINT
* Refer to the Techstream operator's manual for further details.
* If zero point calibration does not complete, replace the front seat assembly RH.

OK:

"Zero Point Calibration is complete." is displayed.

31. SENSITIVITY CHECK (Occupant Classification System)

(a) Sensitivity check procedure

(1) Turn the power switch off.

(2) Connect the Techstream to the DLC3.

(3) Turn the power switch on (IG).

(4) Turn the Techstream on.

(5) Enter the following menus: Body Electrical / Occupant Detection / Utility / Sensitivity Check.

(6) Perform sensitivity check by following the prompts on the Techstream screen.

HINT
Refer to the Techstream operator's manual for further details.

(7) Confirm that the initial sensor reading is within the specified range.

Standard:

-3.2 to 3.2 kg (-7.0 to 7.0 lb)

(8) Place a 30 kg (66.1 lb) weight (e.g. a 30 kg (66.1 lb) of lead mass) onto the front passenger seat.

(9) Confirm that sensitivity is within the specified range.

Standard:

27 to 33 kg (59.5 to 72.8 lb)

HINT
* When performing sensitivity check, use a solid metal weight (the check result may not appear properly if a liquid weight is used).
* If sensitivity deviates from the specified range, retighten the bolts of the front passenger seat without deforming the seat rail. After performing this procedure, if sensitivity is not within the specified range, replace the front seat assembly RH.
32. INITIALIZE POWER WINDOW CONTROL SYSTEM (POWER WINDOW REGULATOR MOTOR ASSEMBLY (ALL DOORS)) (Power Window Control System)

CAUTION:
When the power window regulator motor assembly is reinstalled or replaced, the power window control system must be initialized. Functions such as the auto up and down, jam protection, remote control and key-off operation do not operate if the initialization is not performed.

HINT
When the battery is replaced, it is not necessary to initialize the power window regulator motor assembly.

NOTICE:
* When the power window regulator motor assembly is replaced, DTC B2313 is output. Clear the DTC after the initialization.
* When performing initialization, do not perform any other procedures.
* When performing initialization, use the power window switch of each door to initialize each door window.
* After a door glass or a door glass run has been replaced, the jam protection function may operate unexpectedly when the auto up function is used, due to detection of a value different from the operation learned value of the door glass movement speed. In such cases, the auto up function can be reinitialized by repeating the following operation at least 5 times:
* Open the power window by fully pushing down the multiplex network master switch assembly or power window regulator switch assembly.
* Close the power window by fully pulling up the multiplex network master switch assembly or power window regulator switch assembly and holding it at the auto up position.
* If the initialization is not completed properly, the LIN communication system may have a malfunction.
(a) Initialization procedure when replacing the power window regulator motor assembly with a new one:

(1) Connect the battery and turn the power switch on (IG) (at this time, the LED on the multiplex network master switch assembly or power window regulator switch assembly blinks to indicate that it is ready for initialization).

(2) Fully open the window by fully pushing down the multiplex network master switch assembly or power window regulator switch assembly, and hold the switch for 1 second or more after the window is fully opened.

(3) Fully close the power window by fully pulling up the multiplex network master switch assembly or power window regulator switch assembly, and hold the switch for 1 second or more after the window is fully closed to reset the glass position. The LED on the multiplex network master switch assembly or power window regulator switch assembly stops blinking and illuminates to indicate that the initialization is complete.

(b) Initialization procedure when removing/installing the power window regulator motor assembly:

(1) Connect the battery and turn the power switch on (IG).

(2) Fully close the power window by fully pulling up the multiplex network master switch assembly or power window regulator switch assembly, and hold the switch for 6 seconds or more after the window is fully closed (if the power window does not move or stops halfway even when the switch is fully pulled, release the switch and fully pull it again).

(3) Fully open the window by pushing down the multiplex network master switch assembly or power window regulator switch assembly, and hold the switch for 1 second or more after the window is fully opened.

(4) Release the multiplex network master switch assembly or power window regulator switch assembly. Then fully push down and hold the switch for 4 seconds or more.

(5) Fully close the power window by fully pulling up the multiplex network master switch assembly or power window regulator switch assembly, and hold the switch for 1 second or more after the window is fully closed to reset the glass position and complete the initialization.

(c) Initialization procedure when the power window does not fully open:

(1) Connect the battery and turn the power switch on (IG).

(2) Fully close the power window by fully pulling up the multiplex network master switch assembly or power window regulator switch assembly, and hold the switch for 6 seconds or more after the window is fully closed (if the power window does not move or stops halfway even when the switch is fully pulled, release the switch and fully pull it again).

(3) Fully open the window by pushing down the multiplex network master switch assembly or power window regulator switch assembly, and hold the switch for 1 second or more after the window is fully opened.

(4) Release the multiplex network master switch assembly or power window regulator switch assembly. Then fully push down and hold the switch for 4 seconds or more.

(5) Fully close the power window by fully pulling up the multiplex network master switch assembly or power window regulator switch assembly, and hold the switch for 1 second or more after the window is fully closed to reset the glass position and complete the initialization.

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