Canada - Steering/ABS/TCS - TCS Zero Point Calibration
Bulletin
TSB0665
Issue Date
March 09, 2004
Market
Canada
Title
ZERO POINT CALIBRATION
Component
BRAKES
Models
'04 All Models with VSC
The following information is intended to clarify the repair manual procedures for Zero Point Calibration and sensor checks after the replacement of any of the following components.
- Vehicle Stability Control Computer
- Steering Angle Sensor
- Yaw Rate Sensor
- Deceleration Sensor
Zero point calibration of the above sensors must also be performed when replacing or repairing steering related parts. These steps are necessary for the correct and accurate repair of VSC related systems.
APPLICABLE VEHICLES:
- All 2004 model year Lexus vehicles.
REQUIRED SSTs:
WARRANTY INFORMATION:
ZERO POINT CALIBRATION PROCEDURE USING DIAGNOSTIC TESTER:
1. Connect Diagnostic Tester to DLC3.
2. Follow the flow below the calibration procedures.
NOTE:
While performing the Zero Point Calibration, do not tilt, move or shake the vehicle. The vehicle must remain in a stationary condition throughout the entire process. Be sure to perform the procedure on a level surface with an inclination of less than 1%. Vehicles equipped with A/T must have shift lever in park and parking brakes applied. Vehicles equipped with M/T must have parking brake applied.
3. Drive the vehicle for at least 5 minutes to confirm Zero Point Calibration is complete.
NOTE:
If viewing Diagnostic Tester Data List after repair, the Steering Angle Sensor may remain at 1150 until the vehicle reaches 45 kmph (28 mph). This is a normal condition until the learned values of the steering angle have been achieved.
ZERO POINT CALIBRATION USING SST 09843-18040:
The following procedure may be used in the cases where a Diagnostic Tester is not available.
NOTE:
While performing the Zero Point Calibration, do not tilt, move or shake the vehicle. The vehicle must remain in a stationary condition throughout the entire process. Be sure to perform the procedure on a level surface with an inclination of less than 1%.
1. Ensure the shift lever is in the "P" range and parking brake is applied for A/T equipped vehicles and the parking brake is applied for M/T equipped vehicles.
2. Turn the ignition switch ON.
3. Using SST 09843-18040, repeat a cycle of short and open between terminals Ts and CG of DLC3 4 times or more within 8 seconds (refer to the specific vehicle EWD for TS and CG pin location in the DLC3).
4. Verify that the VSC indicator light is lit indicating the recorded zero point is erased.
5. Turn the ignition switch OFF.
6. Be sure the terminals Ts and CG of DLC3 are disconnected.
7. Turn the ignition switch ON.
8. Check that the VSC warning light goes off about 15 seconds after the ignition switch is turned ON.
9. After ensuring that the VSC warning light remains OFF for 2 seconds, turn the ignition switch OFF.
10. Connect the terminal Ts and CG of DLC3 using SST 09843-18040.
11. Turn the ignition switch ON.
12. After turning the ignition switch ON, check that the VSC warning light is lit for about 4 seconds and then starts quick blinking at 0.13 second intervals.
13. After ensuring the blinking of the VSC warning light for 2 seconds, turn the ignition switch OFF.
14. Remove the SST from terminals Ts and CG of DLC3.
15. Drive the vehicle for at least 5 minutes to confirm Zero Point Calibration is complete.
NOTE:
If viewing Diagnostic Tester Data List after repair, the Steering Angle Sensor may remain at 1150 until the vehicle reaches 45 kmph (28 mph). This is a normal condition until the learned values of the steering angle have been achieved.
NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.