Component Identification
SRS Systems
Diagnostics & Handling
Prior Chapters
Trivia
100
Identify whether this is an active or passive system and explain why.
Active system - the driver has to manually make an effort to use it
100
Tech A says a seat belt should be replaced if the webbing is bowed or frayed. Tech B says the seatbelt should be replaced if the color has faded from sun exposure. Who is correct?
Tech A only
Tech B only
Both
Neither
Tech A only
100
SRS system connectors/wires are universally colored _______ often with gold terminals.
Yellow
100
Identify this suspension in the picture
MacPherson Strut
100
Which of these is statements is true?
A: Airbags deploy at approximately 200 mph. (Equal to high performance race cars)
B: Airbags produce a sound at approximately 150 dB. (Equal to Jet engines and rockets)
C: Airbags are tested between 8 mph to 35 mph. (30-50 G's on impact)
D: All of these are true.
D: All of these are true
(Info sourced by NHTSA)
200
Name 3 of the 4 airbags you see in this image 
1: Front Airbags
2: Side Airbags
3: Curtain Airbags
4: Knee Airbags
200
Second-generation air bags may contain how many explosive charges?
A: one
B: two
C: four
D: eight
B: two
200
Which of the following statements about the SRS warning lamp is NOT true?
1. When the ignition is first turned on, the indicator should turn on and remain on for 6 seconds.
2. If the system is able to work correctly, the lamp will stay on.
3. If the lamp flashes off and on again, low source voltage may be indicated.
4. A system problem is indicated when the lamp does not turn on at all.
If the system is working correctly, the lamp will stay on.
200
Identify this suspension in the picture
Short-Long Arm (SLA)
200
Seat belt buckles should be very easy to disengage in case of emergencies. How much pressure should be required to unclip a seatbelt buckle?
approx. 2 pounds of force
300
Identify this component
Pressure Sensor
300
Tech A says that the srs module assembly will disarm the air bag if certain faults occur. Tech B says the passenger air bag may be turned off if not enough weight is on the seat. Who is correct?
Tech A only
Tech B only
Both
Neither
Both
300
Tech A says an airbag should be placed on a work surface face-down to avoid scratching the face of the module. Tech B says an airbag should be held facing away from the technician to prevent accidental deployment. Who is correct?
Tech A only
Tech B only
Both
Neither
Tech B only
300
Identify this form of tire wear and what can cause it
Under-Inflated tires causing both inside/outside tread wear, center tread mostly intact
300
****** DOUBLE JEOPARDY *******
What is the duration of time between the vehicle detecting an impact and the airbag fully deploying?
40 milliseconds (0.04 seconds)
400
Identify this component and where it would be located in the vehicle
Clockspring
In steering column behind airbag module
400
Tech A checks the clockspring connections for signs of damage when replacing a deployed airbag. Tech B backprobes an air bag system to determine if it's in good working order. Who is correct?
Tech A only
Tech B only
Both
Neither
Tech A only
(wow would that be bad)
400
A compressed gas is often used to deploy air bags. What is the gas?
A: Sulfur-Dioxide
B: Helium
C: Oxygen
D: Argon
D: Argon
400
What is considered minimum tread depth? 
3/32nds
400
What is the duration of time between the airbag deploying and completely deflating?
2 seconds
500
Identify this component. Explain why it's either passive or active. 
Inertia Lock Retractor
Passive - the system operates automatically
500
******** DOUBLE JEOPARDY **********
Tech A removes the positive battery cable before servicing any component in the air bag system. Tech B waits 1 minute before handling an airbag after disconnecting its battery. Who is correct?
Tech A only
Tech B only
Both
Neither
Neither
(Negative terminal, wait 10-30 minutes depending on vehicle)
500
A powdery substance released from the air bag when it's deployed is sodium hydroxide, which can cause which of these:
A: Skin Irritation
B: Burns
C: Hearing Loss
D: All of these
A: Skin Irritation
500
Approximately what is the life span of a TPMS sensor? 
5-10 years
500
***** DOUBLE JEOPARDY ******
In 2006, all vehicles were required to have this system installed in the passenger seat for infants, children, and small adults and deploy with 20-35% less force. What is the name of this system?
Adaptive SRS (Dual-Stage Airbags)