Unit test can be done within a single module Cohesion of a single module/component is the degree
ECM, (Engine Control Module, Electronic Control Module) PCM, (Powertrain Control Module, Power Control Module) ECU, (Engine Control Unit, Electronic Control Unit).
The electronic ignition control module on an automobile is installed by first locating the unit at the top of the engine. The wiring harness is then disconnected from the original unit an a new module put in its place.
The electronic control module or unit on a 2003 Mini Cooper is located under the hood. It is on the rear of the intake manifold.
consumer unit
It is a unit that you can connect it to the computer to get speech.
In the fuel pump module located in the fuel tank,it can be purchased separate from the module.
junction box
Please be more specific. Many consumer math books have a unit 1.8 and it would be impossible to list them all.
Powertrain control module (PCM)
Module Testing
module testing