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Home >> Lexus >> 2011 >> IS F V8-5.0L (2UR-GSE) >> Repair and Diagnosis >> Body and Frame >> Testing and Inspection >> Programming and Relearning >> Repair Instruction - Initialization >> Part 2

Part 2








INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION

INITIALIZATION (Continued)

11. TRANSFER TRANSMISSION COMPENSATION CODE (step 2) (Automatic transmission system)
NOTE:
Transmission compensation codes are unique, 60-digit alphanumeric values printed on a QR label on the transmission. If an incorrect transmission compensation code is input into the TCM, shift shock may occur.
HINT: The following operation is available for use when a TCM that is being replaced can still transmit its registered transmission compensation code to the Techstream.

(a) Read the transmission compensation code.
(1) Move the shift lever to N or P.
(2) Connect the Techstream to the DLC3.
(3) Turn the engine switch on (IG).
NOTE:
Do not start the engine.
(4) Turn the Techstream on.
(5) Enter the following menus: Powertrain / ECT / Utility / A/T Code Registration.
(6) Select "Read Compensation Code".
NOTE:
Do not use the code specified on the transmission QR label even if the transmission compensation code cannot be read using the Techstream. The code printed on an in-service transmission may not match its current characteristics. Replace the TCM with a new one and perform a road test to allow the TCM to learn the transmission characteristics.
(7) Turn the engine switch off.
(8) Replace the TCM.
(b) Set the transmission compensation code.
(1) Turn the engine switch on (IG).
NOTE:
Do not start the engine.
(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) Select "Open".
(7) Set the compensation code to the TCM.
12. CODE REGISTRATION (Tire pressure warning system) (Description of code registration)
(a) It is necessary to register the transmitter ID in the tire pressure warning ECU and receiver when replacing a tire pressure warning valve and transmitter and/or the tire pressure warning ECU and receiver.
13. CODE REGISTRATION (Tire pressure warning system) (Preparations before registration)
(a) In case of tire pressure warning ECU and receiver replacement.
(1) Read the registered transmitter IDs that are stored in the old ECU and receiver using the Techstream and note them down. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

Tire Pressure Monitor





(2) If reading stored transmitter IDs are 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 .
(b) When replacing a tire pressure warning valve and transmitter:
(1) When replacing a tire pressure warning valve and transmitter, each ID numbers of tire pressure warning valve and transmitters must be registered. Even if only one tire pressure warning valve and transmitter is replaced, the ID numbers of the all the tire pressure warning valve and transmitters must be registered again. Record all existing ID numbers before beginning the process to enter new ID numbers.
(2) 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.

14. CODE REGISTRATION (Tire pressure warning system) (Registration of transmitter ID)
(a) Set the tire pressure of all the wheels to the specified value .
(b) Turn the engine switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the engine switch on (IG).
(e) Turn the Techstream on.
(f) Perform the transmitter ID registration. Enter the following menus: Chassis / Tire Pressure Monitor / Utility / ID Registration.
(g) Select the registration mode "MAIN Set".
HINT:
- Check that the tire pressure warning select switch is in "MAIN".
- When registering a 2nd set, select the registration mode "2nd Set" after changing the tire pressure warning select switch to "2nd".

(h) Input the transmitter IDs (ID1 to ID4) using the Techstream and transmit them to the tire pressure warning ECU and receiver.
(i) The "ID Registration is complete" is displayed on the Techstream display.
HINT:
- The tire pressure warning light will continue to blink until the tire pressure warning ECU and receiver receives the input ID signals.
- The previously registered IDs will be deleted from the memory when the registration is completed.
- Registration can be performed during initialization. However, the initialization will be cancelled when the registration is started.

15. CODE REGISTRATION (Tire pressure warning system) (Confirmation of transmitter ID registration)
(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) Confirm that the data of tire pressure of all wheels are displayed on the Techstream display. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

Tire Pressure Monitor





NOTICE:
- *1: 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 or C2131/31 to C2134/34 C2121.
- If the IDs have not been registered, DTC C2171/71 or C2172/72 will be stored in the tire pressure warning ECU and receiver 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 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 in Main Mode) or DTC C2127/27 (Transmitter ID not Received in 2nd Mode) is stored in the tire pressure warning ECU and receiver and the tire pressure warning light blinks for 1 minute and then comes on. When the tire pressure warning ECU and receiver successfully receives radio waves from all the transmitters whose IDs are stored in the ECU and receiver, DTC C2126/26 or C2127/27 is deleted and the tire pressure warning light goes off.

16. PERFORM YAW RATE AND ACCELERATION SENSOR ZERO POINT CALIBRATION AND STORE SYSTEM INFORMATION (Vehicle Stability Control system)
NOTICE:
- Stored system information can not be overwritten unless it is cleared. Clear the stored information and then store new system information.
- While obtaining the zero points, keep the vehicle stationary and do not vibrate, tilt, move, or shake it. (Do not start the engine.)
- Be sure to perform this procedure on a level surface (with an inclination of less than 1 degree).

(a) Clear the zero point calibration data and system information.
NOTE:
Performing the following procedure will clear the zero points of the yaw rate and acceleration sensor and system information simultaneously.
(1) Turn the engine switch off.
(2) Check that the steering wheel is centered.
(3) Check that the shift lever is in P.
(4) Connect the Techstream to the DLC3.
(5) Turn the engine switch on (IG).
(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 engine switch off.
NOTICE:
- If the vehicle is driven after the zero point of the yaw rate and acceleration sensor and system information are cleared, DTCs will be stored.
- If the engine switch is turned on (IG) for more than 15 seconds with the shift lever in P after the zero points of the yaw rate and acceleration sensor have 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 and the multi-information display.

(b) Perform the yaw rate and acceleration sensor zero point calibration and store system information.
NOTE:
Performing the following procedure will perform the yaw rate and acceleration sensor zero point calibration and store system information simultaneously.
(1) Turn the engine switch off.
(2) Check that the steering wheel is centered.
(3) Check that the shift lever is in P.
NOTICE:
- DTCs C1210 (Zero Point Calibration of Yaw Rate Sensor Undone) and C1336 (Zero Point Calibration of Acceleration Sensor Undone) will be recorded if the shift lever is not in P.
- If a DTC is stored that indicates zero point calibration is incomplete, repeat the procedure starting at the step for clearing the zero point calibration data and system information.
(4) Connect the Techstream to the DLC3.
(5) Turn the engine switch on (IG).
(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 Test Mode has been entered, keep the vehicle stationary on a level surface for 2 seconds or more.
(9) Check that the master caution indicator light comes on for several seconds and then blinks in Test Mode and the VSC test mode message is displayed on the multi-information display.




HINT:
- If the master caution indicator light does not blink and/or the VSC test mode message is not displayed on the multi-information display, perform zero point calibration again.
- Illustrations may differ from the actual screen displayed depending on the specifications of the vehicle and customized settings.
- 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 engine switch off and disconnect the Techstream.
17. CLEARING ZERO POINT CALIBRATION DATA SYSTEM INFORMATION (Vehicle Stability Control system)
(a) Clear the zero point calibration data and system information.
NOTE:
Performing the following procedure will clear the zero points of the yaw rate and acceleration sensor and system information simultaneously.
(1) Turn the engine switch off.
(2) Check that the steering wheel is centered.
(3) Check that the shift lever is in P.
(4) Connect the Techstream to the DLC3.
(5) Turn the engine switch on (IG).
(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 engine switch off.
NOTICE:
- If the vehicle is driven after the zero point of the yaw rate and acceleration sensor and system information are cleared, DTCs will be stored.
- If the engine switch is turned on (IG) for more than 15 seconds with the shift lever in P after the zero points of the yaw rate and acceleration sensor have 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 and the multi-information display.

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