ASE A6 Electrical Electronics Practice Test

Diagram of door lock circuit.

6. The power door locks on the vehicle in the diagram above unlock only. There is no locking action. Which of the following is causing this condition?

  • A. Relay A
  • B. Relay B
  • C. Switch A
  • D. Fuse A

6.

Answer A is correct. The lock relay is faulty.

Answer B is wrong. The door lock system unlocks the doors, indicating that the unlock relay is functioning. The lock relay or it's circuit is at fault.

Answer C is wrong. It is doubtful that both switches will not lock the door. Inspect the door lock relay, it's probably stuck open.

Answer D is wrong. Fuse A would affect the power feed to the relay coils. These relays are switched by a positive pulse.

7. Two technicians are discussing diagnostics and the data link connector. Technician A says the OBD II DLC connector is located in the cabin near the steering wheel. Technician B says to use this connector to test resistance in the CAN (Controller Area Network). Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

7.

Answer A is wrong. Both technician A and B are correct. The connector contains 16 slots, but they are not all standard, some are left to manufacturer's discretion. They are located in the passenger's compartment near the steering wheel. OBD I connectors may be located elsewhere.

Answer B is wrong. Use pins 6 and 14 to test resistance in the controller area network.

Answer C is correct. Both A and B are correct.

Answer D is wrong. Both A and B are correct.

8. A CAN controller area network is being discussed. Which of the following statements are correct?

  • A. The CAN now operates at 1Mbps.
  • B. The CAN contains twisted wires to prevent RFI interference.
  • C. The low speed CAN connects to the ECM and the TCM.
  • D. The high speed CAN connects to the mirror and seat controller.

8.

Answer A is wrong. The CAN system contains different classes or network speeds according to the controller. Different controller messages have priority or dominance over other recessive messages.

Answer B is correct. Twisted pair and shielded wiring prevent RFI and MFI interference.

Answer C is wrong. Answer B is correct.

Answer D is wrong. Answer B is correct.

Electrical symbol.

9. The electrical symbol above is a:

  • A. Splice
  • B. Connector
  • C. Inductor
  • D. Resistor

9.

Answer A is wrong. This is the standard symbol for a connector.

Answer B is correct. It's found in automotive schematics.

Answer C is wrong. Technician B is correct. Perform a voltage drop test on a problem connector to check for excessive resistance.

Answer D is wrong. Technician B is correct.

10. A pedal mounted brake switch is being tested with a voltmeter. The pedal is depressed, and there is power at the switch, but no power coming out. Technician A says with the brake pedal depressed, there should be power present at both ends of the brake switch. Technician B says this condition indicates that there is an open in this brake switch. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

10.

Answer A is wrong. When the pedal is depressed, the brake switch completes the circuit supplying power to the brake lights.

Answer B is wrong. Power should be present at both terminals of the brake switch when the brake pedal is applied.

Answer C is correct. Both A and B are correct.

Answer D is wrong. Both A and B are correct.