hybrid not charging

[Music] hi everybody and welcome to new episode of diagnose Dan today we are working on a 2014 Misha Misha Outlander hybrid now this vehicle was parked in front of one of our customers homes when they push the start button normally on a petrol version the engine will start to crank and hopefully the engine will start but on a hybrid or an electric vehicle when you push the start button the car will tell you it's ready now when you push the start button on this car the ready sign doesn't come up and there is a message on the desk telling us there's something wrong with the high voltage system now this car was brought on a flatbed to our shop and we noticed the high voltage battery was totally empty now we try to charge it but the battery won't accept a charge now since there aren't a lot of videos diagnosing hybrid and electric vehicles on the internet yet I thought it might be interesting to take you along diagnosing this car so let's diagnose this together I took the opportunity and walked outside my shop where a similar Outlander is parked for regular maintenance I want to show you that when I hit the start button the ready light will come on and the car is ready to drive we're back inside the shop inside the car we're about to diagnose now when I hit the start button on this one notice there is no ready light we've also got messages in the dash telling us there's something wrong with the high voltage system you can also see the high voltage battery is totally empty now we tried to charge it but the battery won't accept a charge I hooked up the scan tool and I did a full system scan of this car and there is a code stored in the B mu the B mu or battery management unit is responsible for everything involving the high voltage battery now let's go into the battery management unit and let's read the codes and there is a fault code stored p1 aad battery current sensor fail can active dtc we've got a fault code stored in our BM you for the battery current sensor the battery current sensor is responsible for measuring the current going into the battery for example while it's being charged any current going out of the battery while it's powering the high voltage systems now without the information from the current sensor the bmu doesn't know how much current is going into and getting out of the battery so it can't operate properly so this explains why our high voltage battery is no longer accepting a charge now also notice that the word can is in the fault code description now let's take a look at a wiring diagram to get a better understanding why the word can is in the fault code this is a part of the wiring diagram for the inside of our high-voltage battery placed inside the high-voltage battery is the current sensor placed outside the I voltage battery is the bmu or battery management unit this is the unit that's flagging a code for the current sensor as you can see the current sensor is a four wire sensor we've got a red power feed a white and light green communication wire and a black round wire let's take a closer look at the four wires let's start out with the red power supply as you can see the power supply is being shared internally between the ground fault detector and the current sensor the B mu is not flagging a code for the ground fault detector so we can assume this sensor is working just fine now if this sensor is working this means the power supply is making it into the battery now just for peace of mind I check the light green wire at pin two just outside the battery with the test light and sure enough we had a good voltage supply now this doesn't mean the voltage supply makes it all the way to our current sensor but there is no way of telling without opening the battery these are the two communication wires that run between the bmu and the high voltage battery now the bmu is receiving information from each of these modules just not from the current sensor so we know the bmu is able to communicate with all these modules so there's nothing wrong with the network inside the battery now we don't know if the communication is making it all the way to the current sensor but there is no way of telling this without measuring at the current sensor itself to do that the battery needs to be opened the fourth and final wire is this black ground wire going to the current sensor you can see it's being shared internally with all the other modules so we know the ground going into the battery is just fine now again we don't know if the ground is making it all the way to the current sensor for all we know there could be a loose connector now unfortunately there is no way of diagnosing this sensor without removing and opening up the battery and do the measurements at the sensor itself since the current sensor is located inside the high voltage battery we've got no choice than to remove the high voltage battery from underneath the vehicle open it up to see what's going on now working on high voltage systems can be dangerous so when doing so make sure you've got the right paperwork make sure you're an Eevee qualified technician and also always follow the rules and regulations in your country before we start removing and opening the battery pack from our Outlander to see what's wrong please be aware I did a free video series on hybrid electric high voltage batteries in these three videos we open up an outlander high voltage battery and go through each and every component in great detail after watching these three videos you will have a detailed understanding of what's going on inside a high voltage battery we also talked about your personal safety and the safety of others while working on high voltage systems so if you want to learn more don't forget to watch these three videos now if you like free tools and who doesn't please pay attention in this video we're doing another giveaway and to be honest it's one of the best giveaways we've done on this channel so far we're giving away the die Tex auto sim pro master kit now the over sim pro is a state-of-the-art sensor similar which is a great tool just by itself but this master kit includes every accessory a professional diagnosis could ever dream up if you want to win this tool all you have to do is leave a comment in the comment section of this video and in the next video we'll randomly pick a winner so let's start removing and opening up the battery pack of our Outlander now please keep in mind that working on high voltage systems is potentially dangerous and always follow the rules and regulations in your country now the whole process of removing and opening up the battery pack is quite a lengthy one so I take short clips of what I'm doing to speed up the process now one tip before we begin most battery packs on hybrid and electric vehicles are mounted underneath the vehicle so make sure you don't damage the battery pack while putting the car up on a lift [Music] [Music] [Music] [Music] [Music] [Music] [Music] [Music] [Music] [Music] [Music] now that we've got the battery pack out from underneath the car and opened it up we can take a look inside and try to find out what's wrong now what I did is reconnect the low-voltage connectors from the car to the battery pack so right now we've got a life working high voltage battery pack in order to do that I needed to reconnect the 12-volt battery now you might wonder isn't that dangerous and yeah that's dangerous but is it more dangerous than it was before over here we get an opened up exposed high voltage battery now no matter these connectors are connected or disconnected the high voltage is still gonna be there so it's going to be dangerous no matter what now the rest of the car these high voltage wires the motor the inverter they are safe to work on but the high voltage battery is always gonna be high voltage so take care now you might wonder if I'm wearing these insulated high voltage gloves to protect me against the shock why do I still need to use insulated tools now think about it when you're working a buff and opened up exposed high voltage battery and you dropped a regular wrench it's going to short out the battery and it might start a fire that's why you use insulated tools if you drop these ones nothing's gonna happen now the current sensor inside this battery is a four wire sensor in the next step I want to check the power the ground and both communication wires the red and the black wire are our power and our ground what I did is back probe the ground wire the black wire attacks a piece of wire to it which I connected to one side of my test light now when I touch the red wire with the other side of the test light if the power and ground are good the test lights should light up and as you can see the test light lights up so the power and the ground are fine now as you can see this blue piece over here is a high-voltage bus bar so you can see how close we are working to the high voltage system we took a look at their power and ground and it was not our issue now we've got two wires left a light green and a white wire which are cane high and canelo communication wires right now I've got the scope hooked up to those two wires so let's see what the communication looks like I've got two channels back probe to the can high and can low wire of our current sensor now let's take a look at the communication that's going on on our network and as you can see there seems to be absolutely no issue with the communication on our network we've got good ground good power and good communication everything is there for a sensor to work properly but it doesn't so my final diagnosis is we've got a bad current sensor now this is a new one it basically works the same as an amp clamp it's being placed over a high voltage cable or busbar and it measures the amount of current that goes through it it's responsible for measuring all the current going into and out of a battery pack the battery management computer needs this information to manage the charging and discharging of the pack without the information from the sensor it flex a code and it no longer accepts a charge since it's quite a lot of work to install the sensor close the battery and replace it under the car again we want to be a hundred percent sure we fixed the issue so we're going to do a little test we're gonna read the fault codes with the old sensor still installed and try to clear it after that we're gonna hook up the new sensor read and clear again and see what happens right now we're inside the battery management unit so let's read the codes and sure enough we've got a fault code stored for a battery current sensor now let's go back and let's try and clear the codes let's read again and as you can see our fault code is still there now just to be 100% sure let's try it second time let's clear the codes let's read again and still our code hasn't cleared I disconnected the connector from the old sensor and I'm gonna hook it up to the new one just to confirm we made the right call before installing it now this component is a low voltage component but still I'm wearing high voltage gloves this is because I'm working close to high voltage components and when I don't pay attention or when I trip and put my hand on the battery I could be in serious trouble let's read the fault codes again and this time we've got three codes stored now this is because of me disconnecting the connector and installing the new sensor so basically we can ignore the extra codes but the big question is will the codes clear this time with the new sensor installed so let's go back clear the codes and let's read again and as you can see no codes present so we made the right call this battery pack had a bad current sensor so we made the right call a bad current sensor now I'm gonna install the current sensor close the battery and reinstall the battery in the car again I'm not gonna film it it's basically the reverse order of the clip you saw earlier if you want more detail of where the current sensor is located and how the battery pack operates I advise you to watch one of my other three videos I made on a similar battery pack I recently started a new Facebook group called the diagnosed Dan global tech support group I started this group because I was getting too many technical questions to answer by myself so a lot of questions stayed unanswered and I don't think that's fair to you guys this group are some of the best technicians from all around the world you can ask your questions there and on your turn you can use your expertise to help others so if you want to learn more share knowledge and help others please consider joining the diagnosed and global tech support Facebook group let's diagnose it together the battery pack is reinstalled and I had to leave the car charging for a while because the battery pack was totally empty now the great news is that it's accepting a charge again but the big question is is the car ready to drive again so let's find out the moment of truth new current sensor installed let's hit the power button and it looks like the car is ready to go the battery is accepting a charge again and also very important no more warning messages on our dash [Music] we just diagnosed and fixed a hybrid electric vehicle cool right now if you want to learn more about hybrid electric vehicles and how they operate don't forget towards my other videos on the subject if you want a chance on winning that fantastic auto sim Promaster kid leave a comment in the comment section and the winner will be picked in the next video also consider joining the new Facebook group and always remember diagnosed then fix it again see you next time guys the reason I started this group is because I'm getting too many tests testicles I recently started a new Facebook group the name of this group is the diagnosed Glenn diagnosed Glenn we took a look at the power in the ground and that was not our issue right now I've got the scope hooked up to the light green and white wire which are the can high and the click the Klan [Music]

Channel: DiagnoseDan

Views: 141,531

Rating: 4.9539833 out of 5

Keywords: hybrid, phev, snapon, scope, tools, fix, repair, automotive, educational, ditex, diagnostician, south main auto, chris fix, scannerdanner, scotty kilmer, etcg, mitsubishi, outlander, electric, ev, tes

Id: tg8_eUgrH7s

Length: 21min 32sec (1292 seconds)

Published: Sat Dec 21 2019

Reddit Comments

[u/Putrid_Narwhal4927]

Good job