Toyota Sienna Quiz
Supplemental restraint system

Trouble in Passenger Airbag ON / OFF Indicator

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
27steps
~162min
4/5difficulty
Done 0 of 27

DESCRIPTION

The occupant classification system detects the front passenger seat condition. It then informs a passenger of the front passenger airbag, the front seat side airbag RH and front seat belt pretensioner RH condition (activated/not activated) by the passenger airbag ON/OFF indicator.

HINT: Approximately 6 seconds after the ignition switch is turned to the ON position, the passenger airbag ON/ OFF indicator will be ON/OFF depending on the conditions listed below.

DESCRIPTION

INSPECTION PROCEDURE

1 CHECK SRS WARNING LIGHT

  1. Turn the ignition switch to the ON position, and check the SRS warning light condition.

HINT: If this trouble occurs, the SRS warning light is off. If it is on, a DTC is output. Troubleshoot for the output DTC.

OK: After the primary check period, SRS warning light goes off. HINT: The primary check period is approximately 6 seconds after the ignition switch is turned to the ON position

2 PERFORM ZERO POINT CALIBRATION

  1. Turn the ignition switch to the LOCK position.
  2. Connect the intelligent tester to the DLC3.
  3. Turn the ignition switch to the ON position.
  4. Using the intelligent tester, perform "Zero point calibration" (28).

OK: "COMPLETE" is displayed

3 PERFORM SENSITIVITY CHECK

  1. Using the intelligent tester, perform "Sensitivity check" (28).

Standard value: 27 to 33 kg (59.52 to 72.75 lb)

END

4 RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT

  1. Turn the ignition switch to the LOCK position.
  2. Loosen the 4 installation bolts of the front seat assembly RH.
  3. Tighten the 4 installation bolts of the front seat assembly RH to the specified torque.

Torque: 37 N*m (375 kgf*cm, 27 ft.*lbf)

5 PERFORM ZERO POINT CALIBRATION

  1. Connect the intelligent tester to the DLC3.
  2. Turn the ignition switch to the ON position.
  3. Using the intelligent tester, perform "Zero point calibration" (28).

OK: "COMPLETE" is displayed.

6 PERFORM SENSITIVITY CHECK

  1. Using the intelligent tester, perform "Sensitivity check" (28).

Standard value: 27 to 33 kg (59.52 to 72.75 lb)

END

7 CHECK CONNECTORS

  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
  3. Check the connectors are properly connected to the occupant classification ECU and the 4 occupant classification sensors.

OK: The connectors are connected.

  • Disconnect the connectors from the occupant classification ECU and the 4 occupant classification sensors.
  • Check the connectors are not damaged or deformed.

    • OK: The connectors are properly normal.

    8 CHECK DTC

    1. Connect the connectors to the occupant classification ECU and the 4 occupant classification sensors.
    2. Connect the negative (-) terminal cable to the battery.
    3. Turn the ignition switch to the ON position, and wait for at least 60 seconds.
    4. Turn the ignition switch to the LOCK position.
    5. Clear the DTCs stored in the memory.
    6. Turn the ignition switch to the ON position, and wait for at least 60 seconds.
    7. Check the DTCs (35).

    OK: DTC is not output.

    9 REPLACE OCCUPANT CLASSIFICATION ECU

    1. Turn the ignition switch to the LOCK position.
    2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
    3. Replace the occupant classification ECU

    10 PERFORM ZERO POINT CALIBRATION

    1. Connect the negative (-) terminal cable to the battery.
    2. Connect the intelligent tester to the DLC3.
    3. Turn the ignition switch to the ON position.
    4. Using the intelligent tester, perform "Zero point calibration" (28).

    OK: "COMPLETE" is displayed.

    11 PERFORM SENSITIVITY CHECK

    1. Using the intelligent tester, perform "Sensitivity check" (28).

    Standard value: 27 to 33 kg (59.52 to 72.75 lb)

    END

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