Exam 48: Restraint Systems: Theory, Diagnosis, and Service

What are the five types of sensors used in an air bag system?

What is the correct procedure for servicing a seat belt pretensioner?

When placing a live air bag module on a table or bench, make sure the trim and air bag face up.

If a seat belt will not buckle, ______.

After deployment of the air bag, potentially harmful sodium hydroxide residue may be on the seats.

Technician A says the SIR warning light should turn on for about six seconds after the ignition is turned on and then turn off. Technician B says that if the SIR indicator is on continuously, the passenger side air bag indicator will display Off. Who is correct?

The side impact air bags deploy at the same time as the front air bags.

What should be done before disposing of a deployed two-stage air bag?

All the following are components of the air bag module EXCEPT:

Trouble code extraction is being discussed. Technician A says codes may be flashed by the air bag lamp. Technician B says a scan tool may be used. Who is correct?

Technician A says a pyrotechnic-type retractor prevents the belt from coming out of the retractor when there is a sudden pull on the belt. Technician B says an inertia lock retractor uses an explosive charge to quickly tighten the belt at the start of a crash.

A deployed air bag has a powdery residue on it. Technician A says this powder is mainly sodium carbonate and cornstarch. Technician B says it may contain sodium hydroxide. Who is correct?

You must wait at least _____ minutes after disconnecting the battery before working on or around the air bag system.

The occupant classification sensor determines the ____________________ of the passengers.

An undeployed air bag is being replaced because the trim cover is cut. Technician A says the cover can be replaced. Technician B says the air bag must be deployed before it is scrapped. Who is right?

Occupant classification sensors are being discussed. Technician A says the sensor uses a silicone-filled bladder in the seat cushion that has a pressure sensor connected to it. Technician B says that piezoresistive sensors are located between the seat track and the floor. Who is correct?

When diagnosing air bag diagnostic codes, the order in which the codes are diagnosed is ______.