Canada - Restraint - Occupant Classification Calibration

Bulletin
0611

Publication Date
2003-12-08

Market
Canada

Reference
BE-03-006R

Model
ES330, RX330

Year Range
2004

Component
BE

Subject:
OCCUPANCY CLASSIFICATION SYSTEM CALIBRATION

The 2004 model year ES330 and RX 330 are equipped with an Occupancy Classification System that will disable the passenger front and side airbags when the passenger seat sensors detect a weight that is less than approximately 80 lbs (36kg).

APPLICABLE VEHICLES:
- 2004 model year ES 330 and RX 330 vehicles.

SERVICE INFORMATION:
In the event of an Occupancy Classification System malfunction, both the "SRS" and "Airbag Off" lights will illuminate.

Diagnostic Tester support for this system includes:
- DTC Check
- Data List
- Zero Point Calibration
- Sensitivity Check

IMPORTANT SERVICE NOTE:
The "zero point calibration" and "Sensitivity Check" for the occupancy classification system MUST be performed if:
- The passenger seat has been removed from the vehicle.
- The vehicle has been in a collision.
- The occupancy classification ECU has been replaced
- For any reason, the indicated weight on the passenger seat (using the Lexus diagnostic tester) is not with them 7 lbs (3.2 kg) of the actual weight on the seat.
- Attempting to clear codes during diagnosis or after the repair. ("Zero point calibration" must be performed first in order to properly clear codes.)

Before performing "zero point calibration" and "sensitivity check" verify the following:
- The seatback pocket is empty.
- Nothing is placed on the seat.
- Nothing is placed under the seat.






WARRANTY INFORMATION:






REQUIRED SSTs:






SYSTEM OPERATION OVERVIEW:

CALIBRATION PROCEDURE:

ZERO POINT CALIBRATION
Follow the screen flow to complete Zero Point Calibration.












NOTE: The RX 330 is used as an example. Use the same procedure for the ES 330.

SENSITIVITY CHECK PROCEDURE:
Follow the screen flow to complete Sensitivity Check Procedure.

















NOTE: The RX 330 is used as an example. Use the same procedure for the ES 330.

IMPORTANT:
When performing the Sensitivity Check Procedure, make sure the test weights placed on the passenger seat are confirmed using an accurate scale. This is necessary to ensure proper system diagnosis.

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.