Toyota Sienna Service Manual: On-vehicle inspection
1. INSPECT FRONT AIRBAG SENSOR (VEHICLE NOT INVOLVED IN COLLISION)
- Perform a diagnostic system check.
2. INSPECT FRONT AIRBAG SENSOR (VEHICLE INVOLVED IN COLLISION AND AIRBAG HAS NOT DEPLOYED)
- Perform a diagnostic system check.
- When the front bumper of the vehicle or its area is damaged, check if there is any damage to the front airbag sensor. If any of the front airbag sensors have defects as mentioned below, replace it with a new one:
- Cracks, dents or chips on the sensor housing.
- Cracks or other damage to the connector.
- Peeling off of the label or damage to the serial number.
CAUTION: Be sure to follow the correct removal and installation procedures.
3. INSPECT FRONT AIRBAG SENSOR (VEHICLE INVOLVED IN COLLISION AND AIRBAG HAS DEPLOYED)
- Replace the front airbag sensor.
CAUTION: Be sure to follow the correct removal and installation procedures.
HINT: The front airbag sensor on the impacted side should be replaced after the steering pad or front passenger airbag assembly has deployed.
Front airbag sensor
COMPONENTS
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Removal
HINT:
Use the same procedures for the RH side and LH side.
The procedures listed below are for the LH side.
1. PRECAUTION
CAUTION:
Be sure to read "PRECAUTION" thoroug ...
Other materials:
Removal
NOTICE:
Always wear safety gloves because the edges of the
seatback frame and seat adjuster are sharp and may
cause injury.
Work must be started more than 90 seconds after the
ignition switch is turned to the LOCK position and the
negative (-) terminal cable is disconnected ...
Precaution
1. INSPECTION PROCEDURE FOR VEHICLE INVOLVED
IN ACCIDENT
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.
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High beam automatic turning on or off conditions
When all of the following conditions are fulfilled, high beam will be
automatically turned on (after approximately 1 second):
Vehicle speed is above approximately 20 mph (32 km/h).
The area ahead of the vehicle is dark.
There are no oncoming or preceding vehicles with headlights or
tail
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