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I am going through my local community college's automotive program but when I finish and get out which area of the auto tech trade should I go after? What is the most valuable position and will make good money. I am thinking diagnostician maybe?
And got the following answer:
Take electronics courses and learn electrical troubleshooting. Modern vehicles are more complex with more software than military aircraft were 30 years ago. No modern car unless you're working on something built in Cameroon doesn't have a mile of wiring and 4 to 10 microcontrollers talking on one or more digital databusses, even the little B segment hatchbacks like a Kia Rio. Modern dealers and shops are running into a brick wall with troubleshooting feature laden super electronic cars. They end up hiring ex-military aircraft avionics people who've had the training to work on integrated multiplexed digital systems because that's the only way they can get cars fixed. Starting a car isn't just turning a key anymore. For example, starting a car, circa 2012... The key fob sends a code to the smart key module which decodes a digital moving code unique to that fob which allowed the command to unlock the doors to be acknowledged by the body control module (BCM) which used it's solid state drivers to turn the door motors and unlock the doors. Pushing the start button (keyless, remember) causes the smart key module, the key fob, and the engine controller to exchange some digital information uniquely coded to the car and to each other. Once the units decide they are coded properly and in fact installed in the correct car and haven't been tampered with the vehicle will command the start relay to close providing power to operate the starter solenoid and begin cranking... A little different than turning a key on a '65 Buick. Customer complaint, NAVI screen goes black after about 5 minutes of being in map mode. Old way -- You scratch your head and chase for hours on this with a meter and solve nothing while the service manager screams in your ear. New way -- Check the TSB list and find out it's a known issue fixed by a software patch released two weeks ago. Upload the patch to a USB stick, reflash the NAVI, and it's out the door. Cars now have millions of lines of code. All that code can hide dozens of bugs and performance issues. Cars just aren't simple anymore. Learn both the mechanical and the electrical side and how the electronics control the hardware. If you can solve problems instead of just change oil and do brake jobs your prospects are a lot better. But if you are to be a diagnostics guy the complexity of modern system means you'll have to do a lot of study to have any idea where to start troubleshooting a problem. How to read electrical schematics and hydraulic diagrams, how to use diagnostic tools that talk to the vehicle systems, a lot of things to learn.