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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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49 thoughts on “Jeep grand cherokee: no start / no crank”
  1. Avataaar/Circle Created with python_avatars Ed Kummel says:

    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!

  2. Avataaar/Circle Created with python_avatars Edwin Dumas says:

    Can't find fuse for rt turn signal lamp!

  3. Avataaar/Circle Created with python_avatars Rick Carran says:

    Can you program vehicle to make coffee, with appropriate machine?

  4. Avataaar/Circle Created with python_avatars eduardo villanueva says:

    Who is looking at this video on 2022? In the middle of war? Crazy right?

  5. Avataaar/Circle Created with python_avatars B McK says:

    Whats an ECM ?

  6. Avataaar/Circle Created with python_avatars john thibodeau says:

    Sounds like on my 2011 ram 1500 , 4.7.

  7. Avataaar/Circle Created with python_avatars David Ragland says:

    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

  8. Avataaar/Circle Created with python_avatars Tim Moscufo says:

    What about the fuel pump?

  9. Avataaar/Circle Created with python_avatars Wallace Donegan Sr says:

    Thanks, so much

  10. Avataaar/Circle Created with python_avatars Walter Bridges says:

    Where are you need you to work on my cars

  11. Avataaar/Circle Created with python_avatars Walter Bridges says:

    Okay my jeep 08 is doing this now how much would something like this well cost to get fixed

  12. Avataaar/Circle Created with python_avatars Mark smith says:

    Is there a link to the engine bay grounding guide for a 2004 Jeep Grand Cherokee Laredo 4.0 ?

  13. Avataaar/Circle Created with python_avatars SuperGreedyboi says:

    I'm having the same problem 😕

  14. Avataaar/Circle Created with python_avatars C Michael Hoover says:

    Now I need to buy a REAL scanner!

  15. Avataaar/Circle Created with python_avatars Tholgar says:

    Good stuff as always!

  16. Avataaar/Circle Created with python_avatars Carlos Gomez says:

    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?

  17. Avataaar/Circle Created with python_avatars Carlos Gomez says:

    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?

  18. Avataaar/Circle Created with python_avatars Peter Colaites says:

    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

  19. Avataaar/Circle Created with python_avatars Clifford Watkins says:

    How would you check a intermittent,,relay sense, when it cuts off, and then restart i. A few seconds

  20. Avataaar/Circle Created with python_avatars My Garage says:

    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 ?

  21. Avataaar/Circle Created with python_avatars made in the USA DH says:

    Keep up the good work 👏

  22. Avataaar/Circle Created with python_avatars John Walsh says:

    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?

  23. Avataaar/Circle Created with python_avatars wrecker Jonny says:

    Now where do I leave my 05 grand Cherokee no start.

  24. Avataaar/Circle Created with python_avatars Edward Kopp says:

    Just received my SMA shirt and love it!!! Thanks Eric for the time to make all these videos!

  25. Avataaar/Circle Created with python_avatars GRUPERO MORTAL says:

    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?

  26. Avataaar/Circle Created with python_avatars Mike Cupka says:

    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.

  27. Avataaar/Circle Created with python_avatars Kirby Schneider says:

    Great job, per usual!

  28. Avataaar/Circle Created with python_avatars Joesep Spindel says:

    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.

  29. Avataaar/Circle Created with python_avatars Tracy Carver says:

    which Launch model is that scanner?

  30. Avataaar/Circle Created with python_avatars Snookerloopy says:

    how many diognostic computors do you have, you seem to use a different one for every video. haha

  31. Avataaar/Circle Created with python_avatars Kamillo P. says:

    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.

  32. Avataaar/Circle Created with python_avatars TwoBobBit says:

    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 🙂

  33. Avataaar/Circle Created with python_avatars robert cale says:

    ATTENTION this was not a green conection problem

  34. Avataaar/Circle Created with python_avatars Mo says:

    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

  35. Avataaar/Circle Created with python_avatars Dependable Auto Truck says:

    where do you get the pin number that you use when installing used pcm

  36. Avataaar/Circle Created with python_avatars Austin Donaldson says:

    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

  37. Avataaar/Circle Created with python_avatars Jack Swager says:

    Why not have an atv with rubber bumper to push in cars.

  38. Avataaar/Circle Created with python_avatars Anthony 'Tony' Hernandez says:

    I'm curious to know what caused the computer to take a dump?

  39. Avataaar/Circle Created with python_avatars Kimberly Carew says:

    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?

  40. Avataaar/Circle Created with python_avatars Chef says:

    I wish more technicians thought like this guy. You can tell he was present when God was handing out common sense

  41. Avataaar/Circle Created with python_avatars Ali Jeep says:

    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

  42. Avataaar/Circle Created with python_avatars Christian Cordero says:

    What model make of scan tool do you have that let's you transfer vin number and secret pin for skim ?

  43. Avataaar/Circle Created with python_avatars MiddleEast Scale Models says:

    I'm taking it to a garage now with this video !

  44. Avataaar/Circle Created with python_avatars xMexBROSx says:

    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?

  45. Avataaar/Circle Created with python_avatars MM Reporter says:

    You are a true genius at analyzing these problems. I envy your depth of knowledge.

  46. Avataaar/Circle Created with python_avatars Chris Conway says:

    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.