Toyota Sienna Quiz
Supplemental restraint system

Initialization

In this manual: Supplemental restraint system
Introduction — 55Service specifications — 7Maintenance — 7Engine — 264U151e automatic transaxle — 108Transfer — 19Propeller shaft — 8Drive shaft — 14Differential — 16Axle — 18Suspension — 37Tire and wheel — 54Brake control — 141Parking brake — 16Steering Column — 11Power steering — 18Air conditioning — 106Supplemental restraint system — 146Seat belt — 22Theft deterrent — 14Engine immobiliser — 17Cruise control — 65Lighting — 61Wiper and washer — 13Door lock — 42Meter — 28Audio / visual — 94Navigation — 108Park assist / monitoring — 33Horn — 5Garage door opener — 42GR-FE Engine control system — 126Supplemental restraint system — 147Other system — 14Windshield / windowglass — 43Mirror — 23Instrument panel — 6Seat belt — 22Seat — 92Engine hood / door — 104Exterior — 39Interior — 5Sliding roof — 9Multiplex communication — 18Can communication — 23
8steps
~48min
2/5difficulty
Done 0 of 8

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 occur.

  • The occupant classification ECU is replaced.
  • Accessories (seatback tray and 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 a collision.
  1. Zero point calibration and sensitivity check procedures
ZERO POINT CALIBRATION

HINT: Make sure that zero point calibration has finished normally, and then perform the sensitivity check.

  1. Adjust the seat position according to the table below.
    ZERO POINT CALIBRATION
  2. Connect the intelligent tester to the DLC3.
  3. Turn the ignition switch to the ON position.
  4. Perform the zero point calibration by following the prompts on the tester screen.
    ZERO POINT CALIBRATION

HINT: Refer to the intelligent tester operator's manual for further details

OK: "COMPLETE" is displayed.

  1. Perform the sensitivity check by following the prompts on the tester screen.
  2. Confirm that the beginning sensor reading is within the standard range.

    Standard value: -3.2 to 3.2 kg (-7 to 7 lb)

  3. Place a 30 kg (66.14 lb) weight (eg. a 30 kg (66.14 lb) of lead mass) onto the front passenger seat.
  4. Confirm that the sensitivity is within the standard range.
    ZERO POINT CALIBRATION

Standard value: 27 to 33 kg (59.52 to 72.75 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 assembly RH.
  • If zero point calibration has not finished normally, replace the front seat assembly RH.

Problem symptoms table

HINT: Proceed to the troubleshooting for each circuit in the table below.

Occupant Classification System

Symptom

Suspected area
The front passenger seat condition differs from the indication by the passenger airbag ON/OFF indicator (DTC is not output). Trouble in Passenger Airbag ON/OFF Indicator

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