semplr.

Exams · Certifications · Licensing

ASE Automobile & Light Truck (A1–A8) — Practice Exam

A6 Body electrical: practice questions

Our ASE A1–A8 bank has 15 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.

Start the free mock exam

Question 1 · A6 Electrical/Electronic Systems

What are the two wires of a CAN bus called?

  1. Signal and reference
  2. CAN high and CAN low
  3. Input and output
  4. Power and ground
Show the answer

B. CAN high and CAN low — They carry mirror-image signals to reduce interference.

Question 2 · A6 Electrical/Electronic Systems

What is a 'wake-up' circuit used for in a module network?

  1. Bringing modules out of sleep mode when needed
  2. Starting the engine remotely from the key fob at low battery voltage
  3. Charging the battery
  4. Testing the airbags
Show the answer

A. Bringing modules out of sleep mode when needed — A module that won't sleep can cause a parasitic draw.

Question 3 · A6 Electrical/Electronic Systems

How should a live (undeployed) airbag module be carried and set down?

  1. Face down on a bench to protect the trim cover from scratches
  2. With the trim side facing away from the body and set face up
  3. With the trim side against the chest
  4. By its wiring
Show the answer

B. With the trim side facing away from the body and set face up — This reduces injury risk if it deploys unexpectedly.

Question 4 · A6 Electrical/Electronic Systems

A power door lock works intermittently and the actuator is noisy. What is likely?

  1. A blown main fuse
  2. A bad BCM in every case
  3. A failing lock actuator
  4. A bad key fob battery only
Show the answer

C. A failing lock actuator — Check voltage at the actuator while operating the switch.

Question 5 · A6 Electrical/Electronic Systems

A key fob works only up close. What is the most common cause?

  1. A bad door lock actuator
  2. A weak fob battery
  3. A blown fuse
  4. A failed BCM
Show the answer

B. A weak fob battery — Replace the battery before deeper diagnosis.

More ASE A1–A8 topics