ADT Safety Systems & Standards 2 — Questions and Answers
Question 1: When replacing Audi airbag components, what is the minimum waiting time after disconnecting the battery before working on the SRS system?
- 30 seconds
- 5 minutes
- 10 minutes (Correct answer)
- 2 minutes
Correct answer: 10 minutes
Technicians must wait at least 10 minutes after disconnecting the battery to allow capacitors in the SRS system to discharge fully before working on airbag components.
Question 2: Which FMVSS standard specifically governs frontal crash protection requirements for passenger vehicles in the United States?
- FMVSS 214
- FMVSS 208 (Correct answer)
- FMVSS 301
- FMVSS 126
Correct answer: FMVSS 208
FMVSS 208 (Occupant Crash Protection) establishes the requirements for frontal crash protection, including airbag deployment thresholds.
Question 3: In Audi's pre-sense system, what type of sensor is primarily used to detect an imminent rear-end collision?
- Infrared sensor
- Ultrasonic sensor
- Radar sensor (Correct answer)
- Lidar sensor
Correct answer: Radar sensor
Audi pre-sense rear primarily uses rear-mounted radar sensors to detect rapidly approaching vehicles and trigger protective measures.
Question 4: What does a 'soft code' fault in an Audi airbag control module indicate?
- A permanent hardware failure in the module
- An intermittent fault that has been detected but is not currently present (Correct answer)
- A crash event has been recorded
- The module requires replacement immediately
Correct answer: An intermittent fault that has been detected but is not currently present
A soft code (intermittent fault) indicates the system detected a problem at some point but it is not currently active, often requiring further diagnosis to confirm the root cause.
Question 5: Which of the following is correct procedure when handling a live (undeployed) Audi airbag module during a seat replacement?
- Store the module face-down on a workbench
- Store the module face-up in a safe location away from heat sources (Correct answer)
- Place the module in a sealed metal container
- Leave the module connected to the wiring harness during work
Correct answer: Store the module face-up in a safe location away from heat sources
Undeployed airbag modules should always be stored face-up so that if accidental deployment occurs, the bag deploys upward and away from personnel.
Question 6: An Audi TPMS warning light remains illuminated after correctly inflating all tires. What is the most likely next diagnostic step?
- Replace all four TPMS sensors
- Perform a TPMS relearn/reset procedure using ODIS or a compatible scan tool (Correct answer)
- Replace the TPMS control module
- Check for a faulty ABS wheel speed sensor
Correct answer: Perform a TPMS relearn/reset procedure using ODIS or a compatible scan tool
After correct inflation, the TPMS system must be reset/relearned so the ECU recognizes the new pressure baselines; ODIS or a compatible tool is required for this procedure on Audi vehicles.
Question 7: Under OSHA standards, when a technician is working under a vehicle supported only by a floor jack, what additional safety measure is mandatory?
- Engage the parking brake only
- Place jack stands rated for the vehicle's weight under the vehicle's frame or designated lift points (Correct answer)
- Block only the rear wheels
- Use the scissor jack included with the vehicle
Correct answer: Place jack stands rated for the vehicle's weight under the vehicle's frame or designated lift points
OSHA requires that vehicles lifted with a floor jack must also be supported by appropriately rated jack stands placed at manufacturer-designated lift points to prevent collapse.
ADT Safety Systems & Standards 2
When replacing Audi airbag components, what is the minimum waiting time after disconnecting the battery before working on the SRS system?