I'm a computer science major and professional software engineer. I've been a DIY car repair person since the 90s and recently bought a XTOOL D7 bidirectional scanner. I'm learning tons watching these training videos and looking forward to learn more about this scan tool and how I can utilize it more effectively with an understanding of the ECM, DTCs and PIDs. I ran across your site on "The Trainer #67 - When Fuel Trims won't trim" while trying to diagnose a rough idle on a Ford Escape with no related DTCs, but a 10.5% LTFT. I realized I couldn't follow the video so I jumped back to "The Trainer #1" and worked my way through a lot of the videos I felt would be nice to know. Finally got back up to #61 and looking forward to learning this scan tool!
Great video. Thank you. I would like to second a previous comment- I often notice fellow technicians forget to ensure there is a load on a circuit prior to checking for a voltage drop. Excellent point to drive home.
@@MotorAgeMagazine I've heard one person say that if you don't have the Check engine light on but trouble codes show up, that it is the ECM. I haven't heard that information from anyone else. You ever heard of it?
@@MotorAgeMagazine I'm looking into other videos about teaching a new ECM after installation. Lots of different opinions on turning the key on and off and then turning the key on for 11 minutes and repeat three times on the 94 GMC Sierra C3500 with a 7.4 engine. When I purchase this ECM, I don't want it to be a fuse for a problem that I have NOT found in the wiring. I appreciate your input. This is all new to me. I've had my 72 Chevy El Camino ever since February 15, 1975.
@@MotorAgeMagazine 1975 and have by myself installed two tear ends and three transmission. I've rebuilt the carburetor two times before I decided to get an Edelbrock, Street Preformer and electronic distributor. Love my 72 Chevy El Camino.
I was always taught by major engine manufacturers ECM has 3 priorities 1 emissions 2 Fuel economy 3 performance In that order ECM s do many more things than just emissions Factory trained tec Cummins Detroit Diesel Catipiller Mercedes Benz Peterbilt Mack Freightliner
Good Afternoon Pete Meier motor age have a great day,and take care 👍 Great tutorial very helpful video thanks👍 From Nick Ayivor from London England UK 🇬🇧
Thanks Pete, for sharing such valuable information throughout this year that is about to end.From Puerto Rico I wish you and the whole family of "Motor Age Magazine" a happy new year 2017!!!!!!!!!!Many blessings to all! Thank you.
A computer does not think, it is programed with a series of loops that are designed to either go into the null and proceed to the next item on its list or if within parameters it will optimize with the command that it has mathematically come to the most optimal for where it equations has led it.I know we would all like to have them as a friend,but we must always remember that they are told what to do by a series of strokes on a keyboard,then looped into doing the same thing over and over. Good video though
Your camera wasn’t showing half of your probing QUESTION: we never saw what to do if the reading revealed a bad ground whether power or signal. Was that what all those wires are, is grounds? Please explain… and THANK YOU❗️❗️
Sir maybe it's better if you illustrate on a white board or paper. where the connection is what the voltmeter goes to and the measured voltage coz we can't see the reading in the meter
Around 27 minutes in I'm a bit confused because you said the voltage drop on the sensor return circuit should be lower than the voltage drop on the main power grounds ultimately I would expect them to be pretty much the same or the power ground voltage drop a tad bit lower ultimately everything has to get back to the battery so if they were the same I would think there's no voltage drop within the system of the computer from the sensor return going back through the main ground to the battery now in fact if the voltage drop was reading point .2 volts (.2)at the sensor return and the main power ground point zero six (.06) I would suspect a problem on the sensor return circuit Maybe I misunderstood you
Hy do you hawe a pdf of obd2 0-10 moduls and ecm and other systems so i could read maybe more in depth?is there a video in fixing most comon obd2 codes?thanks
I know just enough to be dangerous lol. I know your supposed to see 2.5 volts at idle one goes up a volt other down. disconnecting modules to eliminate a bad module pulling a system down. just want to see some good testing. good work man
I'm a computer science major and professional software engineer. I've been a DIY car repair person since the 90s and recently bought a XTOOL D7 bidirectional scanner. I'm learning tons watching these training videos and looking forward to learn more about this scan tool and how I can utilize it more effectively with an understanding of the ECM, DTCs and PIDs. I ran across your site on "The Trainer #67 - When Fuel Trims won't trim" while trying to diagnose a rough idle on a Ford Escape with no related DTCs, but a 10.5% LTFT. I realized I couldn't follow the video so I jumped back to "The Trainer #1" and worked my way through a lot of the videos I felt would be nice to know. Finally got back up to #61 and looking forward to learning this scan tool!
Great video. Thank you. I would like to second a previous comment- I often notice fellow technicians forget to ensure there is a load on a circuit prior to checking for a voltage drop. Excellent point to drive home.
I can’t understand why these videos only get 15K views. Way more info than most of the crap on UA-cam! Please keep going!!
Me either! :-)
Help spread the word and point your friends our way!
@@MotorAgeMagazine I've heard one person say that if you don't have the Check engine light on but trouble codes show up, that it is the ECM. I haven't heard that information from anyone else. You ever heard of it?
@@peacepoet1947 No. But older OBD I vehicles were hard on ECMs and are more likely to have an issue than newer vehicles.
@@MotorAgeMagazine I'm looking into other videos about teaching a new ECM after installation. Lots of different opinions on turning the key on and off and then turning the key on for 11 minutes and repeat three times on the 94 GMC Sierra C3500 with a 7.4 engine. When I purchase this ECM, I don't want it to be a fuse for a problem that I have NOT found in the wiring. I appreciate your input. This is all new to me. I've had my 72 Chevy El Camino ever since February 15, 1975.
@@MotorAgeMagazine 1975 and have by myself installed two tear ends and three transmission. I've rebuilt the carburetor two times before I decided to get an Edelbrock, Street Preformer and electronic distributor. Love my 72 Chevy El Camino.
Nice job Pete. Very informative and useful. Too often I see tech's check power and ground but not under load.
Excellent video dear sir. Very clear and precise explanation clearing all parameters involved. Regards,
I was always taught by major engine manufacturers
ECM has 3 priorities
1 emissions
2 Fuel economy
3 performance
In that order
ECM s do many more things than just emissions
Factory trained tec
Cummins
Detroit Diesel
Catipiller
Mercedes Benz
Peterbilt
Mack
Freightliner
Paul Tavres If fuel economy is poor, what happens to emissions? If performance drops off, what happens to emissions? Just sayin’...😊
Good Afternoon Pete Meier motor age have a great day,and take care 👍
Great tutorial very helpful video thanks👍
From Nick Ayivor from London England UK 🇬🇧
Nice work your videos are always so solid and have much Integrity to them.
Thank you John!
13:13 computer is the customer lol ! That a good one ultimate customer for sure thanks Pete appreciate your videos your the ultimate trainer.
Thanks Pete, for sharing such valuable information throughout this year that is about to end.From Puerto Rico I wish you and the whole family of "Motor Age Magazine" a happy new year 2017!!!!!!!!!!Many blessings to all! Thank you.
Very well done and informative. Kudos to a man who really knows his stuff AND knows how to communicate it.
A computer does not think, it is programed with a series of loops that are designed to either go into the null and proceed to the next item on its list or if within parameters it will optimize with the command that it has mathematically come to the most optimal for where it equations has led it.I know we would all like to have them as a friend,but we must always remember that they are told what to do by a series of strokes on a keyboard,then looped into doing the same thing over and over. Good video though
Nice job friend.
Your camera wasn’t showing half of your probing QUESTION: we never saw what to do if the reading revealed a bad ground whether power or signal. Was that what all those wires are, is grounds? Please explain… and THANK YOU❗️❗️
does it mean that ECU has power to energize the radiator fan relay even if the engine is off ?
Sorry for the late reply. On some models, yes - the ECM can turn the fans on even if the engine is off.
technically great job
from Sunil Ghorpade , Mumbai India
Sunil Ghorpade Thank you!
Thanks Pete, Great Job ..
Like your videos, but please cut back on the volume on the intro music.
Sir maybe it's better if you illustrate on a white board or paper. where the connection is what the voltmeter goes to and the measured voltage coz we can't see the reading in the meter
I like those information they are very good
Great video.
Thanks! Glad you liked it.
Around 27 minutes in I'm a bit confused because you said the voltage drop on the sensor return circuit should be lower than the voltage drop on the main power grounds ultimately I would expect them to be pretty much the same or the power ground voltage drop a tad bit lower ultimately everything has to get back to the battery so if they were the same I would think there's no voltage drop within the system of the computer from the sensor return going back through the main ground to the battery now in fact if the voltage drop was reading point .2 volts (.2)at the sensor return and the main power ground point zero six (.06) I would suspect a problem on the sensor return circuit Maybe I misunderstood you
Great job
Hy do you hawe a pdf of obd2 0-10 moduls and ecm and other systems so i could read maybe more in depth?is there a video in fixing most comon obd2 codes?thanks
Thanks so much teacher. Regards
Hey Pete, could you do a video on how to turn a Delorean into a time machine? 2020 really has been a disappointment
Love the video but had one question how would you go about doing the reading when the ecm is under the dash
It seems to be based on the binary system. ?
Very useful program...
Helpful. Thanks.
How do you check the ecm if it working properly
could you do a video on can bus testing
We'll get that on the list Phil! Thanks for the request...
I know just enough to be dangerous lol. I know your supposed to see 2.5 volts at idle one goes up a volt other down. disconnecting modules to eliminate a bad module pulling a system down. just want to see some good testing. good work man
I would love to see a video on can bus testing as well, Pete
Where is the coil module located in the pcm with the one piece cover
Information is good
Is a launch CRP 129e engine analyzer okay to start with?
great job pete, thanks.
Walker Steven Hernandez Patricia Garcia Matthew
Thanks boss
Thanks for watching!
How do I find a good service information system as a DIY technician? I can’t afford ALLDATA for $200.00/month.
Both Mitchell 1 and Alldata offer DIY versions of their service. Just Google Alldata DIY
@@MotorAgeMagazine Thanks, seems like the manufacturers should supply the vehicle specific information for free.
#61 the trainer
Chris Canty The information is available at www.motorage.com. Just search "obd II". Does that help?
Chris Canty Or are you looking for the slides used?
Yes
Chris, you can request the slides by writing me at pete.meier@ubm.com. Please include the intended use of the material in your request.
I have a 2000dodge neon I just put a use computer in it how do I get it programmer
Dealer
Dealer
could you send me that info in a pdf file
Chris Canty What exactly would you like me to send?
Davis Matthew Wilson Ronald Miller Ronald
Jackson George Martin Edward Rodriguez Sharon