Question Title

* 1. What best describes the measurement of electrical pressure?

Question Title

* 2. Diesel Exhaust Fluid (DEF) freezes at what temperature?

Question Title

* 3. Within a circuit, if the resistance increases (bad connection, faulty terminals…) the current in the circuit will?

Question Title

* 4. You are checking a voltage reading at a headlamp, the specification you are given is in Volts.  You check the circuit and your multimeter is giving a reading of 653mV.  How many Volts is your reading?

Question Title

* 5. You are attempting to connect an electronic service tool to a vehicle and you are unable to read any modules. The service tool connects to similar vehicles without issues. You notice the LED on the datalink adapter does not light up when connecting to the diagnostic port, what is the most likely cause?

Question Title

* 6. Which property of electricity creates the movement within solenoids and actuators, such as inside of a starter relay?

Question Title

* 7. A 2007+ model Diesel vehicle is brought to a technician with a complaint of excessive regeneration, there are no codes within the ECM’s of the vehicle.  What is the most likely cause of failure if the DPF outlet temp is 100F degrees higher than the DPF inlet temp during a forced regeneration?

Question Title

* 8. When checking for amperage we need to put our multimeter leads _____ the circuit.

Question Title

* 9. During a regeneration, the doc inlet temp never reaches its target temperature (doesn’t get hot enough), what is the most likely cause?

Question Title

* 10. You are checking the J1939 datalink on a heavy duty vehicle,  using your multimeter, you check voltage on CAN high and CAN low to ground, approximately what reading should you have with the ignition on?

Question Title

* 11. What is the correct NOx efficiency reduction percentage on “most” commercial diesel vehicles?

0 of 12 answered
 

T