Programming and Relearning

SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM: INITIALIZATION

1. ZERO POINT CALIBRATION

NOTICE:
Make sure that the front passenger seat is not occupied before performing the operation.

HINT
Perform the zero point calibration and sensitivity check if any of the following conditions apply.

* The occupant classification ECU is replaced.
* Accessories (seatback tray, seat cover, etc.) are installed.
* The front passenger seat is removed from the vehicle.
* The passenger airbag ON/OFF indicator ("OFF") comes on when the front passenger seat is not occupied.
* The vehicle is brought to the workshop for repair due to an accident or collision.

(a) Zero point calibration and sensitivity check procedures

HINT
Make sure that zero point calibration has finished normally before performing the sensitivity check.

(1) Adjust the seat position according to the table below.





(2) Connect the Techstream to the DLC3.

(3) Turn the ignition switch to ON.

(4) Perform the zero point calibration by following the prompts on the screen.

HINT
Refer to the Techstream operator's manual for further details.

OK:

"Zero Point Calibration is complete." is displayed.

(5) Perform the sensitivity check by following the prompts on the screen.

(6) Confirm that the beginning sensor reading is within the standard range.

Standard:

-3.2 to 3.2 kg (-7.0 to 7.0 lb)

(7) Place a 30 kg (66.1 lb) weight (e.g. a 30 kg [66.1 lb] lead weight) onto the front passenger seat.

(8) Confirm that the sensitivity is within the standard range.

Standard:

27 to 33 kg (59.5 to 72.8 lb)

HINT
* When performing the sensitivity check, use a solid metal weight (the check result may not appear properly if a liquid weight is used).
* If the sensitivity deviates from the standard range, retighten the bolts of the front passenger seat taking care not to deform the seat rail. After performing this procedure, if the sensitivity is not within the standard range, replace the front seat cushion spring assembly RH.
* If zero point calibration does not finish normally, replace the front seat cushion spring assembly RH.