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Home >> Lexus >> 2009 >> LS 600h V8-5.0L (2UR-FSE) Hybrid >> Repair and Diagnosis >> Testing and Inspection >> Programming and Relearning >> Repair Instruction - Initialization >> Part 1

Part 1








INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION

INITIALIZATION

Procedures necessary when battery terminal is disconnected / reconnected





NOTICE:
After the power switch is turned OFF, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the power switch OFF, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.

Procedures necessary when ECU or other parts are replaced

















1. HYBRID VEHICLE CONTROL SYSTEM
NOTICE:
The Vehicle Identification Number (VIN) must be input into the replacement hybrid vehicle control ECU.
HINT: ]The VIN is in a 17-digit alphanumeric vehicle identification number. The 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.
1 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.

2 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.

2. HYBRID TRANSMISSION SYSTEM
(a) RESET MEMORY
NOTICE:
- If either the hybrid vehicle transmission assembly or hybrid vehicle control ECU is replaced, initialize the learned value of RESET MEMORY.
- Wait 1 minute after disconnecting the negative battery terminal before performing RESET MEMORY.
- The RESET MEMORY can be performed only by using the Techstream.
HINT: Disconnecting the negative battery terminal does not initialize (clear) the learned value.
(1) Connect the Techstream to the DLC3.
(2) Turn the power switch on (READY) and turn the Techstream on.
(3) Select the following menu items:
NOTICE:
Check that the shift lever is in the P position and turn the power switch on (READY).

1 Techstream - Select : Powertrain / Hybrid Control / Data List. Read the data list before performing Reset Memory.

Check Item (Techstream)





NOTICE:
- Do not depress the accelerator pedal during Reset Memory.
- Do not move the shift lever from the P position.
- If the specified conditions above are not satisfied, warm up the hybrid system with the power switch on (READY) until each item meets the specified condition.
(4) Select the following menu items:
1 Techstream - Select: Powertrain / Hybrid Control / Reset Memory.
CAUTION:
After performing Reset Memory, be sure to perform a road test described earlier.
NOTICE:
During Reset Memory, do not turn off either the power switch or the Techstream.
HINT:
- Approximately 1 minute is required to complete Reset Memory.
- The ECU is learned by performing a road test.

3. AIR SUSPENSION SYSTEM
(a) If replacing the suspension control ECU and/or height control sensor, perform the vehicle height offset calibration.
(b) VEHICLE HEIGHT OFFSET CALIBRATION
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 on N.

1. PERFORM VEHICLE HEIGHT INSPECTION
(a) Adjust the pressure of the tires.
(b) Stabilize the suspension by releasing the parking brake and bouncing the corners of the vehicle up and down.
(c) Turn the power switch OFF.
(d) Connect the Techstream to the DLC3.
(e) Turn the power switch ON (READY) and the Techstream ON.
(f) Enter the following menus: Chassis / Air suspension / Data List.
(g) Press the height control switch and adjust the vehicle height to "HEIGHT HIGH".
(h) Press the height control switch and return the vehicle height to NORMAL.
(i) Using the DATA LIST, confirm that the vehicle height control operation is complete.

Air Suspension





(j) Turn the power switch OFF.
(k) Move the shift lever to N and move the vehicle forward and rearward.
(l) Turn the power switch ON (IG).
(m) Enter the following menus: Chassis / Air suspension / Data List.
(n) Using the Techstream, read the DATA LIST.
HINT: Then read and write the values for "After Height Adjust" and "Height Adjust" for each wheel.

Air Suspension





(o) Turn the power switch OFF.




(p) Perform the vehicle height inspection.
Standard vehicle height:






Measuring points:
A
Ground clearance of front wheel center
B
Ground clearance of head center of bolt used to install front No. 1 suspension lower arm to front suspension member
C
Ground clearance of rear wheel center
D
Ground clearance of pit center of attachment rear suspension arm
NEXT -- Continue to next step.
2. PERFORM VEHICLE HEIGHT OFFSET CALIBRATION
NOTICE:
The possible vehicle height automatic adjustment value is 20 mm (0.787 in.). If the "Height Adjust" value + (Standard value - Measurement value - "After Height Adjust" value) is 20 mm (0.787 in.) or more, first perform the vehicle height adjustment (height control link adjustment).
(a) Turn the power switch OFF.
(b) Connect the Techstream to the DLC3.
(c) Turn the power switch ON (IG) and the Techstream ON.
(d) Enter the following menus: Chassis / Air suspension / Utility / Height Offset.
(e) For each wheel, follow the instructions on the Techstream screen and input the input value to complete the vehicle height offset calibration.
HINT: Input value = Measurement value
(f) Turn the power switch ON (READY).
(g) In the DATA LIST, enter "Height Control".
(h) Press the height control switch and adjust the vehicle height to "HEIGHT HIGH".
(i) Press the height control switch and return the vehicle height to NORMAL.
(j) Using the DATA LIST, confirm that the vehicle height control operation is complete.

Air Suspension





(k) Turn the power switch OFF.
(l) Perform the vehicle height inspection. Check that the result is within +/-14.3 mm (+/-0.563 in.) of the standard value.
NEXT -- END
4. TIRE PRESSURE WARNING SYSTEM (REGISTRATION)
(a) DESCRIPTION OF CODE REGISTRATION
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 In case of tire pressure warning ECU replacement:

- Read the registered transmitter IDs that are stored in the old ECU using the Techstream and note them down.
- If reading the 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 In case of tire pressure warning valve and transmitter replacement:

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




NOTICE:
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 the tire and wheel. Therefore, take a note of the transmitter ID before installing the tire pressure warning valve and transmitter.

5. TIRE PRESSURE WARNING SYSTEM (INITIALIZATION)
(a) DESCRIPTION OF INITIALIZATION
(1) Perform initialization in the following cases:

- Before delivery of a new vehicle.
- After replacement of the tire pressure warning ECU.*
- After replacement of a tire pressure warning valve and transmitter.*
- Specified tire pressure changes depending on the size or type of tire.
- When changing the tire inflation pressure by changing traveling speed or load weight, etc.
HINT: *: Perform initialization after the transmitter ID registration is completed.
(2) Before initialization
1 Set the tire pressures of all tires to the specified values.
NOTICE:
Make sure the tires are cooled down.

(b) INITIALIZATION PROCEDURE
(1) Turn the power switch on (IG).
(2) Press and hold the tire pressure warning reset switch for 3 seconds or more so that the tire pressure warning light blinks 3 times.




(3) Turn the power switch off.
(4) Connect the Techstream to the DLC3.
(5) Turn the power switch on (IG) and the Techstream on.
(6) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(7) Check that the initialization has been completed.
(8) Confirm that the tire pressure data of all tires is displayed on the Techstream screen.
NOTICE:
- The initialization is normally completed within 2 to 3 minutes.
- If the initialization has not been completed successfully, DTC C2177/77 is set after a vehicle speed of 8 km/h (5 mph) or more continues for 20 minutes or more.
- While in test mode, the system will not change to initialization mode even if the tire pressure warning reset switch is pushed.
- The initialization can be terminated by connecting terminals 13 (TC) and 4 (CG) of the DLC3.





Tire Pressure Monitor





HINT:
- The initialization is complete when the Data List "ID Tire Inflation 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 C2125/25.

(c) INITIALIZATION PROCEDURE (MULTI-INFORMATION DISPLAY)
(1) Turn the power switch on (IG).
(2) Press and hold the tire pressure warning reset switch for 3 seconds or more so that the tire pressure warning light blinks 3 times.




HINT:
- The initialization can be confirmed through the multi-information display.




- The order in which the data is received is random.
- If the signals from all the wheels are received, the initialization is complete.
- 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 C2125/25.
NOTICE:
- If the initialization has not been completed successfully, DTC C2177/77 is set after a vehicle speed of 8 km/h (5 mph) or more continues for 20 minutes or more.
- The initialization can be terminated by connecting terminals 13 (TC) and 4 (CG) of the DLC3.






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