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Home >> Lexus Truck >> 2010 >> RX 350 FWD V6-3.5L (2GR-FE) >> Repair and Diagnosis >> Testing and Inspection >> Repair Instruction - Initialization >> Up to 08/2009 >> Part 2

Part 2

NOTICE:
Transaxle compensation codes are unique, 60-digit alphanumeric values printed on a QR label on the transaxle. If an incorrect transaxle compensation code is input into the TCM, shift shock may occur.

(a) Record the transaxle compensation code specified on the QR label.





HINT
The transaxle compensation code is imprinted on the QR label.

(b) Move the shift lever to N or P.

(c) Connect the Techstream to the DLC3.

(d) Turn the engine switch on (IG).

(e) Turn the Techstream on.

NOTICE:
Do not start the engine.

(f) Enter the following menus: Powertrain / ECT / Utility / A/T Code Registration.

(g) Select "Set Compensation Code".

(h) Register the compensation code.

(1) Press "Input".

(2) Manually input the transaxle compensation code. The code is a 60-digit alphanumeric value printed on the QR label. After inputting the code, press "OK".

(i) Check that the compensation code displayed on the screen is correct by comparing it with the 60-digit alphanumeric value on the QR label.

NOTICE:
If an incorrect transaxle compensation code is input into the TCM, shift shock will occur.

(j) Press "NEXT" to set the compensation code to the TCM.

HINT
* If the registration process fails, the compensation code may be incorrect. Check the compensation code again.
* If the attempted compensation code is correct, a problem with the wire harness or a bad connection with the DLC3 may cause a registration failure. Check the wire harness and the DLC3 connection. If no problem is found, the TCM may be malfunctioning. Check the TCM and repeat this operation.
(k) Press "EXIT".

9. TRANSFER TRANSAXLE COMPENSATION CODE (Automatic Transaxle System)

NOTICE:
Transaxle compensation codes are 60-digit alphanumeric values imprinted on a QR label on the transaxle. If an incorrect transaxle compensation code is input into the TCM, shift shock may occur.

HINT
The following operation is available for use with TCMs that can transmit the registered transaxle compensation code to Techstream.

(a) Move the shift lever to N or P.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine switch on (IG).

(d) Turn the Techstream on.

NOTICE:
Do not start the engine.

HINT
The transaxle compensation code is imprinted on the QR label.

(e) Read the transaxle compensation code.

(1) Enter the following menus: Powertrain / ECT / Utility / A/T Code Registration.

(2) Select "Read Compensation Code".

(3) Press "Save".

(4) Press "Save" or "Overwrite".

HINT
Press "Overwrite".

NOTICE:
Do not use the code specified on the transaxle QR label even if the transaxle compensation code cannot be read using the Techstream. The code printed on an in-service transaxle may not match its current characteristics. Replace the TCM with a new one and perform a road test to allow the TCM to learn.

(5) Press "EXIT".

(6) Turn the engine switch off.

(f) Replace the TCM.

(g) Set the transaxle compensation code.

(1) Turn the engine switch on (IG).

(2) Turn the Techstream on.

(3) Enter the following menus: Powertrain / ECT / Utility / A/T Code Registration.

(4) Select "Set Compensation Code".

(5) Press "Open".

(6) Press "Open" again to proceed.

(7) Press "Exit".

10. REGISTRATION OF VEHICLE IDENTIFICATION INFORMATION (Air Suspension System)

NOTICE:
* The CAN communication system must be functioning normally.
* Make sure that the ECM is the correct type, normally functioning and correctly installed.
HINT
* If the suspension control ECU is replaced with a new one, perform registration of vehicle identification information.
* Vehicle identification information is obtained automatically through CAN communication when in test mode.
(a) Turn the engine switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine switch on (IG).

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / Air suspension / Utility / Signal Check.

(f) Confirm that the system is in test mode by checking that the luggage mode indicator light in the combination meter blinks at 0.125 second intervals (0.125 seconds on and 0.125 seconds off).





HINT
* When the vehicle identification information is stored, the luggage mode indicator light blinks at 0.125 second intervals (0.125 seconds on and 0.125 seconds off).
* When vehicle identification information is not stored, the luggage mode indicator light blinks at 1 second intervals (1 second on and 1 second off).
11. VEHICLE HEIGHT OFFSET CALIBRATION (Air Suspension System)

NOTICE:
* Make sure that the pressure of the tires is normal.
* Make sure that the vehicle is empty.
* Make sure that the parking brake is released and that the shift lever is in N. Ensure, it is noted that the vehicle does not move at this time.
HINT
If replacing the suspension control ECU and/or height control sensor, perform the vehicle height offset calibration.

1. ADJUST THE PRESSURE OF THE TIRES

(a) Check the pressure of each tire and, if the value is not as specified, adjust it.

NEXT -- Continue to next step.

2. PERFORM VEHICLE HEIGHT INSPECTION

(a) Stabilize the suspension by releasing the parking brake and bouncing the corners of the vehicle up and down.

(b) Start the engine and set the vehicle height in HI mode.

(c) Check that the HI mode light blinks and then remains on, and that the vehicle height control operation has finished.

(d) Set the vehicle height in N mode.

(e) Check that the N mode light blinks and then remains on, and that the vehicle height control operation has finished.

(f) Turn the engine switch off.

(g) Move the shift lever to N and move the vehicle forward and rearward.

(h) Connect the Techstream to the DLC3.

(i) Turn the engine switch on (IG).

(j) Turn the Techstream on.

(k) Using the Techstream

Enter the following menus: Chassis / Air suspension / Data List. Then read and write the values for "After Height Adjust" and "Height Adjust" for each wheel.

Air Suspension System





(l) Turn the engine switch off.

(m) Inspect vehicle height and make a note of actual vehicle height.

(n) Calculate the absolute value of "Height Adjust" + (standard vehicle height - measurement vehicle height - "After Height Adjust".

Standard:





HINT
When performing automatic vehicle height adjustment using the Techstream, the maximum height adjustment is 80 mm (3.15 in.). If the absolute value of "Height Adjust" + (standard vehicle height - measurement vehicle height - "After Height Adjust" ) is more than 80 mm (3.15 in.), first adjust the height control sensor links as necessary until the vehicle height compensation value is less than 80 mm (3.15 in.).

B -- Go to step 4

C -- END (VEHICLE HEIGHT ADJUSTMENT IS NOT NECESSARY)
A -- Continue to next step.

3. PERFORM VEHICLE HEIGHT ADJUSTMENT USING HEIGHT CONTROL SENSOR LINK

(a) Adjust vehicle height using the height control sensor links.

NEXT -- Continue to next step.

4. PERFORM AUTOMATIC VEHICLE HEIGHT ADJUSTMENT USING TECHSTREAM

(a) Start the engine and set the vehicle height in HI mode.

(b) Check that the HI mode light blinks and then remains on, and that the vehicle height control operation has finished.

(c) Set the vehicle height in N mode.

(d) Check that the N mode light blinks and then remains on, and that the vehicle height control operation has finished.

(e) Turn the engine switch off.

(f) Connect the Techstream to the DLC3.

(g) Turn the engine switch on (IG).

(h) Turn the Techstream on.

(i) Enter the following menus: Chassis / Air suspension / Utility / Height Offset.

(j) Following the Techstream display, input the values of "wheel of which the vehicle height sensor is to be adjusted", "actual measured vehicle height" and "vehicle height standard value (designed value)".
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