One of the best video you make specially for showing us how to check pcm power and ground Big thank you for teaching us new technique and thanks a lot for camera men a lot of improvement every video 👍🏾👍🏾👍🏾
Great video Deo, just a few things to keep in mind, I’m not a mechanic but I understand a bit more from electronics, you could use the diode mode on the multimeter to push some voltage on a wire that’s not a current carrying wire like signal wires where the computer would have a high value resistor inside, say to just see how a data pid moves, also if a non load carrying wire such as a signal wire tests good in continuity then it’ll have the same voltage on both ends, this doesn’t hold true if it’s a current carrying wire where you need to do a loaded test. From watching other weird scenarios in videos like this I’ve seen sometimes the presence of a code makes the pid inactive.
@KITS_Auto_and_Truck_Repair my pleasure! It might be a good video actually to see how your multimeter behaves in diode mode , maybe you can check with another multimeter or the lab scope and then see if a data pid changes or responds. I'm curious to see 😁 Thanks again I like the new high quality camera system and microphone!
Excellent content Deo. The only thing I would liked to have seen in the dx is the voltage on the backside of the pcm harness to match the lost dpf sensor voltage for verification it’s not lost in the harness. Keep them coming. I’m learning.
Yep ,you’re a legend good on you my friend,I would do the same diagnosis,you have to cover or arse,that’s why I’m here because you’re a legend from explaining so well and doing it right, and I’ll be very successful because you only work the right way,thanks again and keep up the good work,please say hi to the camera man (Mat) he’s doing a great job,cheerio from down under Australia 👌🤙👍😎
Had wanted to also ask and suggested all you did until after watching the full process of diagnosis.. 🤛🏾🤛🏾 #senior the van is an electronic van and most of the sensor feed on the battery somehow.. #checking the battery also to confirm the voltage , yes you can get the 12v + alright but the ahms 🤔 might not be OK as specified and I think it can also have an effect.. Well I stand to be corrected.. 🫡Big ups to you
@KITS_Auto_and_Truck_Repair I'm not stating that it is the problem though but I encountered an issue where similar thing like this happened and at the end when I checked and changed the battery as at then, the issue was OK.. So I'm also just suggesting a battery check 👍🏿
Excellent and very detailed diagnosis, Definitely it is a computer issue, and the question is , do u have to reprogram the new PCM after the installation , or only the dealer can do the programming?
Love your work. We have an Audi q7 2014 that cranks no start. I tried removing the glow plugs one at a time to see if fule would come out. None did, and I noticed the glow plugs were all cold. As a diesel cranks shouldn't the glow plugs retain at least some heat?
May I give you some advise sir? When testing for power and ground to modules, use a test light along with a volt ohm meter. You see, a meter may show voltage is there but the amperage may not be there , hence a dim light from the test light. The same for testing power to things.
@@ekimbrough1413The data information bus is used for communication between modules but not sensors. It's almost like the difference between thoughts and senses in living creatures.
Are these issues related? Could a failure of the DPF pressure sensor stop the ECU from initiating a regeneration? If the DPF isn't regenerating, doesn't that increase back pressure on the turbo? Could that cause a turbo to fail and start leaking? What's the signal voltage on the DPF pressure sensor while the engine is running? We know 0.58 V is 0 psi, and 4.3 V is 14psi from your testing, so we can interpolate the DPF differential while running at low and high load. It shouldn't exceed 2psi (about 1.1 V), right?
You should be aware of "substituted values". It can happen that a problem somewhere else will cause the computer to set the value to zero to protect something.
My Sprinter is showing a service signal I think it has some images of tools and a number started 800,900 and so on can please give your expert opinion> Thanks
You were going down the rabbit hole one that dpf sensor. If it was wiring issue, you would have circuit codes. If it read 0 constantly , then it could not know soot mass in dpf, and dpf full code is not logical. That is a scanner issue.
@tas.es9 No! I didn't, if what you are saying is true! then why didn't the DPF Sensor PID Change when I used a pressure pump on the DPF Sensor tubes, Remember I pressurized those tube!!!!
A mechanic can either repair or he can't, but otherwise simply recommending a new van appears lazy and insulting. Determine the cost to repair, then inform the customer. The customer must make the decision. It's your job to give the best information. Sure, sometimes that information is that their vehicle once fixed isn't worth the repair bill. This van is worth $10k running correctly. Turbo from eBay $250. ECM from eBay $400. Or, you could probably buy OEM parts, pay dealer labor rates, and still have a repair bill below the trade-in value at the same dealer. Run the numbers.
You failed to check the sensor plug ground in part 1 of the video because you use the negative side of your meter to the battery, this gives the impression that your ground is ok, and if the ground is missing at the plug then your sensor will not work period
A mechanic can either repair or he can't, but otherwise simply recommending a new van appears lazy and insulting. Determine the cost to repair, then inform the customer. The customer must make the decision. It's your job to give the best information. Sure, sometimes that information is that their vehicle once fixed isn't worth the repair bill. This van is worth $10k running correctly. Turbo from eBay $250. ECM from eBay $400. Or, you could probably buy OEM parts, pay dealer labor rates, and still have a repair bill below the trade-in value at the same dealer. Run the numbers.
@@KITS_Auto_and_Truck_Repair you can try generic obd mode or open the pcm check for crack solder on the pin, also check again if the fault code still present. i think you fixed it regardless the zero value you see on the scanner
As much as i like your work, theres only one issue you constantly choose to omit when doing your recommendations or estimates to your customers, not giving your customers an option to send defective electrical parts to people who are able to fix them. Like in the case of this ECM..Unnecessary parts changing end up drying your customer's pockets. Give this customers an option to have this ECU checked. Dont turn yourself into a parts changer.
@KITS_Auto_and_Truck_Repair according to yourr tests, i have no doubt that the ECM is defective but instead of the customer to buy a new part, open the dem thing and see what is wrong with it or if you are limited in that regard, send it to those that can repair it.. Its all about saving the client some money.
@@zwahashuYes, if the customer can wait for shipping both ways and you have space to store the vehicle. Deo doesn't like non-OEM parts though, so a non-OEM RMA doesn't fit in his business plan.
Deo, you are indeed a great technician with much knowledge. However, for me, your videos are very tedious to watch. I know you are trying to teach those who have no idea what is under their hoods, and maybe they should not be your target market. For those us us with basic understanding and want to be "do it yourselfers," your videos are a great help. The issue I have is that you repeat your intent many times before you actually perform the task and sometimes repeat the task several times to demonstrate the same result. I wish there was a pro version of your videos where the assumptions, testing, diagnosis and repair could be viewed with more fluidity and take less time. For example, when testing the DPF sensor, you might have jumpered the 5V ref wire to the signal wire at the sensor connector, through a test light, and compared your meter reading at the PCM pin to your scanner PID. That would have confirmed wire continuity between sensor and PCM without the separate continuity test of the wire itself. Then, at the PCM connector unplugged, confirm one good ground which you'll use to confirm all powers through a higher amp light bulb with two backprobe pins on it. Leave it plugged into the last power wire tested and test the rest of your grounds. It's neither wrong or right. It's just the way I would have done it. Thanks again for the very informative video.
A mechanic can either repair or he can't, but otherwise simply recommending a new van appears lazy and insulting. Determine the cost to repair, then inform the customer. The customer must make the decision. It's your job to give the best information. Sure, sometimes that information is that their vehicle once fixed isn't worth the repair bill. This van is worth $10k running correctly. Turbo from eBay $250. ECM from eBay $400. Or, you could probably buy OEM parts, pay dealer labor rates, and still have a repair bill below the trade-in value at the same dealer. Run the numbers.
You are simply the best mechanic and also a great person I have ever come across, God bless you brother for all this knowledge that you share.
@frontlinebandindia Thank you, I appreciate it
What a diagnose I appreciate it
And your double checking habit i like it. well done bro keep it up make lots of videos 👍 Big fan from India❤
@FaheemKhan-gl3yx Thank you my friend from india
Beautiful diagnosis, thank you for sharing the whole process with us.
@ashercohen4739 My Pleasure! Thanks
Excellent, Deo...once again you are the best mechanic that I've watched in youtube.
@orlandodizo5097 Thank you!
One of the best video you make specially for showing us how to check pcm power and ground
Big thank you for teaching us new technique and thanks a lot for camera men a lot of improvement every video 👍🏾👍🏾👍🏾
@waterfall8526 Thank you, I appreciate the feedback, we are getting better everyday!
Big picture diagnosis great job tech
@thesilentonevictor Thank you!
Great video Deo, just a few things to keep in mind, I’m not a mechanic but I understand a bit more from electronics, you could use the diode mode on the multimeter to push some voltage on a wire that’s not a current carrying wire like signal wires where the computer would have a high value resistor inside, say to just see how a data pid moves, also if a non load carrying wire such as a signal wire tests good in continuity then it’ll have the same voltage on both ends, this doesn’t hold true if it’s a current carrying wire where you need to do a loaded test. From watching other weird scenarios in videos like this I’ve seen sometimes the presence of a code makes the pid inactive.
@baykarracko1505 Thanks!
@KITS_Auto_and_Truck_Repair my pleasure! It might be a good video actually to see how your multimeter behaves in diode mode , maybe you can check with another multimeter or the lab scope and then see if a data pid changes or responds. I'm curious to see 😁 Thanks again I like the new high quality camera system and microphone!
I follow your videos and i learn alot of that why am said because you're English is good to understand and easy to follow and learn
@butlerstore4368 Thank you, I'm glad to hear that
Excellent content Deo. The only thing I would liked to have seen in the dx is the voltage on the backside of the pcm harness to match the lost dpf sensor voltage for verification it’s not lost in the harness. Keep them coming. I’m learning.
@robertfoilesjr1337 Thank you!
great diagnostic my engineer
@CharlesCharles575 Thank you!
Outstanding work.
@MikeHurst-be7bz Thank you!
Yep ,you’re a legend good on you my friend,I would do the same diagnosis,you have to cover or arse,that’s why I’m here because you’re a legend from explaining so well and doing it right, and I’ll be very successful because you only work the right way,thanks again and keep up the good work,please say hi to the camera man (Mat) he’s doing a great job,cheerio from down under Australia 👌🤙👍😎
@arturrodrigues2739 Thank you my Friend from Australia
Had wanted to also ask and suggested all you did until after watching the full process of diagnosis.. 🤛🏾🤛🏾
#senior the van is an electronic van and most of the sensor feed on the battery somehow..
#checking the battery also to confirm the voltage , yes you can get the 12v + alright but the ahms 🤔 might not be OK as specified and I think it can also have an effect.. Well I stand to be corrected.. 🫡Big ups to you
@Kekeliautos I didn't understand your statement, do you think the problem was the battery??
@KITS_Auto_and_Truck_Repair I'm not stating that it is the problem though but I encountered an issue where similar thing like this happened and at the end when I checked and changed the battery as at then, the issue was OK.. So I'm also just suggesting a battery check 👍🏿
Excellent and very detailed diagnosis, Definitely it is a computer issue, and the question is , do u have to reprogram the new PCM after the installation , or only the dealer can do the programming?
@essamdalgamouni1536 Thanks, I could do the programming if I had the equipment, I have a friend that does the programming for me
Excellent video, good job.
@arandateam100 Thank you!
Godfather great one again 🎉
@MprahEnock-db8ti Thank you my Friend!
You performed a thorough diagnostic test. Like Bernie Thompson says "Test Don't Guess!"
@mikechiodetti4482 Yes, Thanks
Hello, I would change the ECM in your place, you make good job mate :)
@JPDC1991 Thank you mate!
great job brother .
@RoyanInshanally Thank you!
What electrical wiring diagram subscription do you have? Thanks
@molajat6133 I have Mitchell prodemand
Love your work. We have an Audi q7 2014 that cranks no start. I tried removing the glow plugs one at a time to see if fule would come out. None did, and I noticed the glow plugs were all cold. As a diesel cranks shouldn't the glow plugs retain at least some heat?
@jasonthomashorn4794 Defective glow plugs would cause a long crank but not a no start, make sure you have good fuel pressure
@KITS_Auto_and_Truck_Repair I assume I can only check it with a fancy scan tool. Will ross-tech do everything yours can on that Audi?
Would not use a load when you test pcm for positives and grounds? Even a turn signal bulb?
@dlm4587 Oh Really??
May I give you some advise sir? When testing for power and ground to modules, use a test light along with a volt ohm meter. You see, a meter may show voltage is there but the amperage may not be there , hence a dim light from the test light. The same for testing power to things.
@Bandwidth24 you didn't like the tests with the test light???
It was a great video Deo.
Though running the CAN resistance test, would've probably saved you some time and anguish on whether the PCM was bad or not.
@ekimbrough1413 Thanks, a Resistor to test what? remember we didn't have a communication issue!
@@KITS_Auto_and_Truck_Repair
Termination resistors. One at the PCM.
@@ekimbrough1413The data information bus is used for communication between modules but not sensors. It's almost like the difference between thoughts and senses in living creatures.
@@VashthStampeede
How true!
Scary huh?
Are these issues related?
Could a failure of the DPF pressure sensor stop the ECU from initiating a regeneration?
If the DPF isn't regenerating, doesn't that increase back pressure on the turbo?
Could that cause a turbo to fail and start leaking?
What's the signal voltage on the DPF pressure sensor while the engine is running? We know 0.58 V is 0 psi, and 4.3 V is 14psi from your testing, so we can interpolate the DPF differential while running at low and high load. It shouldn't exceed 2psi (about 1.1 V), right?
@7LegSpiders Sorry! I didn't understand your question
This one is causing headache. From South Africa
@wsnxumalo6707 we got it my friend!!
Yes sir I would of had done the same diagnosis to condemn pcm and whatever else
@juanhernandez1238215 I agree with you! Thanks
This guy is the real deal. Screw the Car Care Nut. the car care nut sucks
@fstrickland58 Come on! Don't say that I like the Car care nut! he is a legend in our industry!
I think you must to check that pin from inside in the computer maybe is loose or broken
@alfredperci9262 Good point, but the pin was fine
How do you get vehicles wiring diagram
@GabrielEbenezer-ko2hp I get them from mitchell prodemand
You should be aware of "substituted values". It can happen that a problem somewhere else will cause the computer to set the value to zero to protect something.
@ob1Katoby1 Great point, I'm aware!!
if the power and grounds on the pcm are bad, you'll have much bigger issues than just that one single sensor.
@TheAnalogKid2 I agree!
this is a giant puzzle!
@ManWander Pretty much!
My Sprinter is showing a service signal I think it has some images of tools and a number started 800,900 and so on can please give your expert opinion> Thanks
@cladiodecastro6189 Sorry! I didn't understand your question
My expert opinion is that you should proofread before submitting your comment.
Where is his shop located?
@lydellleopold5884 We are located in Frederick MD, you can email at kitsautoandtruckrepair@gmail.com for shop info
The problem is the PCM, either where you plug in the connection... or internally.
@ekimbrough1413 Good!
Yep...looks like it's at the PCM connection.
@ekimbrough1413 Yep!
A pin fitment test could be performed to eliminate the question of connection or PCM itself.
@@VashthStampeede
True!
I would change the ECM
@lloydwilliams8497 I agree with you
You were going down the rabbit hole one that dpf sensor. If it was wiring issue, you would have circuit codes. If it read 0 constantly , then it could not know soot mass in dpf, and dpf full code is not logical.
That is a scanner issue.
@tas.es9 No! I didn't, if what you are saying is true! then why didn't the DPF Sensor PID Change when I used a pressure pump on the DPF Sensor tubes, Remember I pressurized those tube!!!!
If it this harness is good the problem with de the pcm
@JattaVictor The PCM was the issue
Better camera work gentlemen...kudos~!
@milesmahan Thanks!
❤❤❤❤🎉
@RichardGibson-r3i Thank you!
Deo....run a test at the DTC, to see if you have around 60 ohms on the CAN.
@ekimbrough1413 an ohm test would be helpful if we were dealing with a communication problem
@ekimbrough1413 dude, I don't think we're watching the same video.
@@TheAnalogKid2
? What do you mean?
@@KITS_Auto_and_Truck_Repair
But isn't that what you're dealing with?
If your power and grounds are good its a bad Pcm
@atiqkhan6683 Thanks! I agree with you
I would tell the customer to buy a new van 😂
@jcmx0180 Oh really!! LOL
A mechanic can either repair or he can't, but otherwise simply recommending a new van appears lazy and insulting. Determine the cost to repair, then inform the customer. The customer must make the decision. It's your job to give the best information. Sure, sometimes that information is that their vehicle once fixed isn't worth the repair bill.
This van is worth $10k running correctly.
Turbo from eBay $250.
ECM from eBay $400.
Or, you could probably buy OEM parts, pay dealer labor rates, and still have a repair bill below the trade-in value at the same dealer. Run the numbers.
You failed to check the sensor plug ground in part 1 of the video because you use the negative side of your meter to the battery, this gives the impression that your ground is ok, and if the ground is missing at the plug then your sensor will not work period
@acestu Ok
I was strongly say the problem is the p.C.M , because you are feeding it the voltage and it's not reading anything.
@ice4278 I agree, Thanks
I know you're going to fix it, you
❤ I believe that to... 🫡
@lloydwilliams8497 Thank you!
@Kekeliautos Thanks
DEO, I’d recommend a new van. Lol
@Mark-um3hm Oh Really! that's funny!! Hahah
A mechanic can either repair or he can't, but otherwise simply recommending a new van appears lazy and insulting. Determine the cost to repair, then inform the customer. The customer must make the decision. It's your job to give the best information. Sure, sometimes that information is that their vehicle once fixed isn't worth the repair bill.
This van is worth $10k running correctly.
Turbo from eBay $250.
ECM from eBay $400.
Or, you could probably buy OEM parts, pay dealer labor rates, and still have a repair bill below the trade-in value at the same dealer. Run the numbers.
Your PCM/ECU faulty.
@diy04514 Yes!
Change Scan Tool!
@ekimbrough1413 Yes! we used 2 scanners in this video but same results, so it wasn't a scanner issue
@@KITS_Auto_and_Truck_Repair you can try generic obd mode or open the pcm check for crack solder on the pin, also check again if the fault code still present. i think you fixed it regardless the zero value you see on the scanner
ECU malfunction
@jamesgichuhi2174 I agree with you
Definately ECM faulty
@FaheemKhan-gl3yx I agree
My boss nice work my nane is EBENEZER authormobile electrician 🚗
@GabrielEbenezer-ko2hp Thanks my Friend
As much as i like your work, theres only one issue you constantly choose to omit when doing your recommendations or estimates to your customers, not giving your customers an option to send defective electrical parts to people who are able to fix them. Like in the case of this ECM..Unnecessary parts changing end up drying your customer's pockets. Give this customers an option to have this ECU checked. Dont turn yourself into a parts changer.
@zwahashu I don't understand your comment, you don't think the ECM has a problem??
@KITS_Auto_and_Truck_Repair according to yourr tests, i have no doubt that the ECM is defective but instead of the customer to buy a new part, open the dem thing and see what is wrong with it or if you are limited in that regard, send it to those that can repair it.. Its all about saving the client some money.
@@zwahashuYes, if the customer can wait for shipping both ways and you have space to store the vehicle. Deo doesn't like non-OEM parts though, so a non-OEM RMA doesn't fit in his business plan.
Deo, you are indeed a great technician with much knowledge. However, for me, your videos are very tedious to watch. I know you are trying to teach those who have no idea what is under their hoods, and maybe they should not be your target market. For those us us with basic understanding and want to be "do it yourselfers," your videos are a great help. The issue I have is that you repeat your intent many times before you actually perform the task and sometimes repeat the task several times to demonstrate the same result. I wish there was a pro version of your videos where the assumptions, testing, diagnosis and repair could be viewed with more fluidity and take less time. For example, when testing the DPF sensor, you might have jumpered the 5V ref wire to the signal wire at the sensor connector, through a test light, and compared your meter reading at the PCM pin to your scanner PID. That would have confirmed wire continuity between sensor and PCM without the separate continuity test of the wire itself. Then, at the PCM connector unplugged, confirm one good ground which you'll use to confirm all powers through a higher amp light bulb with two backprobe pins on it. Leave it plugged into the last power wire tested and test the rest of your grounds. It's neither wrong or right. It's just the way I would have done it. Thanks again for the very informative video.
@VashthStampeede My Pleasure! Thanks for the feedback
A mechanic can either repair or he can't, but otherwise simply recommending a new van appears lazy and insulting. Determine the cost to repair, then inform the customer. The customer must make the decision. It's your job to give the best information. Sure, sometimes that information is that their vehicle once fixed isn't worth the repair bill.
This van is worth $10k running correctly.
Turbo from eBay $250.
ECM from eBay $400.
Or, you could probably buy OEM parts, pay dealer labor rates, and still have a repair bill below the trade-in value at the same dealer. Run the numbers.
@7LegSpiders Oh really!!
Smh IT WAS A JOKE !!!
@jcmx0180 Oh really!!