Description Of Occupant Classification System

a. GENERAL DESCRIPTION.

1. In the occupant classification system, the occupant classification ECU calculates the weight of the occupant based on a signal from the occupant classification sensor. This system recognizes the occupant to be a child if it detects a weight of less than 36 kg (79.37 lb), and disables the front and side airbags.

2. This system is mainly comprised of 4 occupant classification sensors that detect the load on the front passenger seat. The occupant classification ECU controls the system, and the passenger airbag ON/OFF indicator indicates the ON/OFF condition of the front passenger airbag assembly and side airbag assembly (passenger side).

b. OCCUPANT CLASSIFICATION SENSOR.

The occupant classification sensors are installed on 4 brackets connecting the seat rail and seat frame. Accordingly, when load is applied to the passenger seat by an occupant sitting in it, the occupant classification sensors register a distortion.

2006 RESTRAINTS Supplemental Restraint System - Sequoia

Toyota Supra Seat Wiring
Fig. 33: Identifying Occupant Classification Sensor Position Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

HOW TO PROCEED WITH TROUBLESHOOTING

The intelligent tester II can be used in steps 4, 6, 8 and 9.

1. VEHICLE BROUGHT TO WORKSHOP

2. CUSTOMER PROBLEM ANALYSIS (See HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS )

3. WARNING LIGHT CHECK (See DIAGNOSIS SYSTEM )

4. DTC CHECK (Present and Past DTCs) (See DTC CHECK / CLEAR )

RESULT CHART

Result

Proceed to

DTCs OUTPUT

A

DTCs NOT OUTPUT (PROBLEM SYMPTOMS TABLE)

B

B: PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )

2006 RESTRAINTS Supplemental Restraint System - Sequoia

5. DTC CHART (See DIAGNOSTIC TROUBLE CODE CHART )

6. CIRCUIT INSPECTION

7. REPAIR OR REPLACEMENT

8. DTC CLEARANCE (Present and Past DTCs) (See DTC CHECK / CLEAR )

9. DTC CHECK (Present and Past DTCs) (See DTC CHECK / CLEAR )

RESULT CHART

Result

Proceed to

DTCs NOT OUTPUT

A

DTCs OUTPUT

B

B: Go to step 5 A: END INITIALIZATION

1. ZERO POINT CALIBRATION AND SENSITIVITY CHECK

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Responses

  • sabine
    Where is the seat occupancy detection sensor on a 2004 toyota camry?
    10 months ago
  • Tricia
    What is occupant classification system in toyota sequoia?
    9 months ago

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