In this video I have a look at a 2009 Jeep Grand Cherokee that was towed in from another shop as a no start, no crank. It doesn't take long to determine that the ECM is at fault and will need a new one. -Enjoy!
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If an SMA Video has helped you out please consider giving using "Patreon" to help support us. The videos take real time to create and pull us away from real work that pays our bills. CLICK HERE: https://www.patreon.com/southmainauto
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Thank you for all the continuing support!
--Eric & Vanessa O.
Feel like sending some swag to SMA because you love the videos but don't know where to send it?
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PO Box 471
Avoca, NY 14809
Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained.
My 2005 Grand cherokee is doing the same thing. Scotty Kilmer says that there is a known issue with the Integrated Power Module and replacing that is a solution for these kinds of things…so it looks like it's a $600+ fix either way!
Can't find fuse for rt turn signal lamp!
Can you program vehicle to make coffee, with appropriate machine?
Who is looking at this video on 2022? In the middle of war? Crazy right?
Whats an ECM ?
Sounds like on my 2011 ram 1500 , 4.7.
Great video. Very thorough. It helps me out alot. Thank you for explaining everything as simple as possible. I'm able to work on my own vehicles and figure things out but, by no means a veteran mechanic. Thank you
What about the fuel pump?
Thanks, so much
Where are you need you to work on my cars
Okay my jeep 08 is doing this now how much would something like this well cost to get fixed
Is there a link to the engine bay grounding guide for a 2004 Jeep Grand Cherokee Laredo 4.0 ?
I'm having the same problem 😕
Now I need to buy a REAL scanner!
Good stuff as always!
Hello, am having an issue with my 2002 dodge ram 1500 4×2, 5.9 gas. Gauges shutdown truck turn off, now I have to spark and fuel, everything work from a/c, radio, door locks with remote, horn, etc, obd2 can't communicate, I believe is my pcm, your opinion?
Hello, am having an issue with my 2002 dodge ram 1500 4×2, 5.9 gas. Gauges shutdown truck turn off, now I have to spark and fuel, everything work from a/c, radio, door locks with remote, horn, etc, obd2 can't communicate, I believe is my pcm, your opinion?
We have a 2005 jeep grand cherokee, with what I think is a bad ground strap issue. Before this, hell I didnt even know what a ground strap was. Watching your vids has helped me figure stuff out as to why, but getting it done is still proving to be a problem, ant advice you can give me on this would be a great help, Thank you and looking foward to a response soon, sincerly, Frustrated in South Dakota
How would you check a intermittent,,relay sense, when it cuts off, and then restart i. A few seconds
My wifes 07 is having a similar issue no crank in P&N I replace the shifter module Doorman 601-001 I believe it failed after one day,im waiting on warranty replacement,I also replaced the ignition switch as well,do you have any suggestions no codes on ecm ?
Keep up the good work 👏
Great video!! My daughter has a 2005 Jeep Grand Cherokee with the 3.7 and she has owned in for a year and a half I have been trying to figure out the check engine light coming on and I get a PO700 and a 404 code???? Help it runs fine and shifts fine?
Now where do I leave my 05 grand Cherokee no start.
Just received my SMA shirt and love it!!! Thanks Eric for the time to make all these videos!
my 2001 jeep cranks but won't start,,, no fuel pressure, no injector pulse , also no 12 volts batt to ignition coils,,my scanner not communicating to the computer,, all fuses are good , and relay good,, any idea what it may be,, thank you my friend?
Great info! I understand that you are a busy man but was hoping that you might be able to answer a question for me. Got a no crank, no start. Starter only clicks once. Starter and battery are good. All power, ground, starter, ignition and ASD circuits are good. Also no issue with SKIM light. Would a bad PCM or SKIM cause only a single click from starter? This is on a 2003 Laredo 4.0L.
Great job, per usual!
can you program a different ECM with the vin and milage and leave the SKIM "inactive". before getting anywhere near the vehicle with it, can you remove the skim module out of the steering column and then put everything back together. You can then start the jeep without a chipped key and it will run. The little "no key" light on the dash will come on, but the jeep will run without the security system being active. Will this eliminate the need for a SKIM module and a chipped key? Keys go bad, modules go bad, people can't use their vehicles and most get screwed by dealerships. Will leaving the security system inactive and leaving out the module and chipped key enable you to not ever need a chipped key or skim module ever again? Then just pull the bulb for the key light and be done with it.
which Launch model is that scanner?
how many diognostic computors do you have, you seem to use a different one for every video. haha
Hello Sir. Just wondering why you have strated investigation from ASD relay, because of scaning tool indication or you checked this before ? The easiest way with that symptoms would be to check SM relay and the signals both from Ingition switch(+) and powertrain control module(-).BTW I just realized that 2006 WK 3.7 has different relays locations. BEst Regards and thanks for the good turtorial.
Hey Eric i've just found your channel and i am loving it!
I'm from the UK and i have always wondered why American engines seem to be so low powered considering how enormous a lot of them are. For example, i have a Lotus Elise from 1999 with a relatively boring 1.8 inline 4 DOHC making 150BHP(this is pretty standard for equivalent European engines), which is only 60BHP less than the 3.7 V6 in this Jeep (I noticed the scan tool Eric was using stated this Jeep has 210BHP). I did the maths and if my engine was scaled up to 3700cc it would have 308BHP. I've noticed this seems to be the way with a lot of American engines…not having a dig, just pondering – I'd be interested if anyone can enlighten me 🙂
ATTENTION this was not a green conection problem
05 grand cherokee 5.7 here idler pulley flew off on the highway and it overheated towed it home next day I'm tryna start it without the belt just for a minute so i can hear if the engine is still good but it won't crack , could it be the auto shut down relay cuz it heated?
Edit: i just noticed where the ECM is located i think it might have got soaked with coolant when it overheated and the coolant splashed out the resivor I'm screwed now
where do you get the pin number that you use when installing used pcm
Would really like to talk to you about my jeep problem. If there was any way you could talk to me please let me know and I will get you my information
Why not have an atv with rubber bumper to push in cars.
I'm curious to know what caused the computer to take a dump?
My neighbor has a 2010 Jeep Cherokee Laredo and when he turns his key off, the motor shuts down BUT all accessories stay on.
I believe it is the WIN modal. Is that common? Is there a good way to test it?
I wish more technicians thought like this guy. You can tell he was present when God was handing out common sense
The 2008 Grand Cherokee wireless run node(win) changed with the last user, but the fubk with the car didn’t do what was wrong with my friend
What model make of scan tool do you have that let's you transfer vin number and secret pin for skim ?
I'm taking it to a garage now with this video !
I currently have a problem where my 05 jeep grand Cherokee does not want to start after driving it many times in warm weathers. When I drive around for 20 min then park, it won't start back up. I had to replace starter since it gotten bad. I Do not have a
-CHECK ENGINE LIGHT ON-not sure if the ecm is the problem either is the fuel pump, any clue what could possibly be the problem?You are a true genius at analyzing these problems. I envy your depth of knowledge.
I've had all these same issues with my 2006 grand cherokee. First time I switched out the relay that worked. Two weeks later no start, tried the relay switch again, did not work. Watched a few you tube videos and tried the jiggle the wires connecting to the solenoid. That worked. Few weeks later no start same issue. Got it towed and they told me it was the starter. They replaced the starter and I had no issue for 2 months. Same problem, Dash lights up like a christmas tree and no start. Towed it back to the place that put the starter in and they called the next day saying it started and they could not find an issue with it. Ran for another 5 months good and then stopped for gas and when I went to start it nothing. Messed with the relays the wires etc, tried putting it in drive and still no start. Left it right where it died and the mechanic there told me it was a bad starter. I explained to him that the starter was under a year old and he told me the starter was definitely done and that he would check around. Turns out their was a short in the wiring from the solenoid to the ignition. He replaced that and put another starter in. He explained that the short was frying the solenoid which in and of itself would not be expensive but in this model the solenoid was part of the starter part and I had to get them both together. Turns out he was right and the car ran for two years more with no issues starting. 6 months ago same thing. Dash lights up no crank just a click and can't get it started trying all the same things I used to. This time it was just a battery and the battery was 6 years old so I counted myself lucky until, a month after replacing the battery the car would not start. The difference this time is I would hit the unlock security button, lights would go on, dash would riing and beep like normal, but as soon as I turned the ignition everything went black. No click no lights nothing. So the guy who replace the battery came and got the jeep, spent 5 days with it, and could not find anything wrong. Said the battery was probably just low but the alternator was good and asked if I left a light on. I didn't think so but sure it's possible. Long as its starting now I drove off and thanked him for the clean bill of health. Two days later same thing. Drove to the market and when I cam out turned the key, everything normal until I try to start and goes completely black again. A random guy at the market tells me, the computer is shut down. Disconnect the battery and reconnect it and you should be good. He was right. Car started up fine. So it's happened two more times and i've disconnected the battery and it's started up fine. By resetting the computer. So My issue is, I've got to figure out what is shutting down the computer when I turn the key. I think you may have solved the problem. You mentioned the 02 sensor being in the same circuit as the auto shut down. Turns out I've had a check engine light on for a few months and auto zone pulled up the codes and said it was an o2 sensor. They also said it was fine to drive because it would only affect the gas mileage. But my instincts are that the 02 sensor being bad is causing the ecu to shut down. It would make sense because the codes get reset when you disconnect the battery and it starts. I've noticed that it does not have an issue starting until after the check engine for the sensor comes back on. Sorry for the life story but perhaps this will help someone. Why the guy who replaced the battery and supposedly did an electrical diagnostic did not know this is beyond me. I'll let you know if replacing the 02 sensor solves the issue.
Oh, low tire pressure, there's the problem, your tire is flat you no go nowhere now LOL.
Question if you dont mind. I have a 2008 jeep Grand Cherokee 3.7 and it won't crank sometimes and some time it will and when it doesn't start its like in this video. But it will start when it seemed to cools down. If you could help with some things to check then i would appreciate it. No code's or check engine light. 😬😞
How was your hunting so far this year? I’ve hunted 7 days so far and harvested the only deer I’ve seen so far 😢