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      04-17-2020, 01:35 PM   #1
kblaade
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Multiple errors in DME. Drivetrain malfunction car cannot be restarted.

Hello All,

I am experiencing a no start issue with my X50i 2015. The engine cranks but does not start. The center console displays a drivetrain malfunction. I cleared the errors with an Autel scanner but they returned. I am yet to do an inspection of fuses or wirings. Dashboard also shows an ambient temperature of -40 deg F.

The errors when I scan the DME shows a lot of 'short circuit to ground'

Diagnosis > Drive > Engine-DME Digital Motor Electronics

1. 102A01 Hot film air mass meter, signal: Electrical fault
Intermittent
2. 10B101 Outside temperature sensor, electrical: Short circuit to B+
Intermittent
3. 10B104 Outside temperature sensor, signal: CAN message faulty
Intermittent
4. 113027 Ignition relay and injectors, supply voltage, fuel injection: Line disconnection
Intermittent
5. 12B102 Oxygen sensor heating before catalytic converter, activation: Short circuit to ground
Intermittent
6. 130002 VANOS solenoid valve, inlet, activation: Short circuit to ground
Intermittent
7. 130202 VANOS solenoid valve, exhaust , exhaust, activation: Short circuit to ground
Intermittent
8. 133102 Valvetronic relay, activation: Short circuit to ground
Intermittent
9. 133104 Valvetronic relay, activation: Line disconnection
Intermittent
10. 135B10 Valvetronic servomotor, activation, voltage phase: Line disconnection
Intermittent
11. 135B12 Valvetronic servomotor, activation, watt phase: Line disconnection
Intermittent
12. 191002 Tank vent valve, activation: Short circuit to ground
Intermittent
13. 191004 Tank vent valve, activation: Line disconnection
Intermittent
14. 1B5202 Supply, terminal 15N_1: Short circuit to ground
Intermittent
15. 1B5302 Supply, terminal 15N_2: Short circuit to ground
Intermittent
16. 1B5402 Supply, terminal 15N_3: Short circuit to ground
17. 1D2402 Map thermostat, activation: Short circuit to ground
Intermittent
18. 1F0515 Valvetronic, supply voltage: Line disconnection
Intermittent
19. 1F4A02 Relay, ignition and injectors, activation: Short circuit to ground
Intermittent
20. 1F4A10 Relay, ignition and injectors, activation: Line disconnection

Any help on what might be the problem?
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      04-17-2020, 01:43 PM   #2
Vdesai0326
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Check to see if all connectors to affected dme (bank1 or bank2) are secure and not loose.
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      04-17-2020, 01:43 PM   #3
turboawd
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My first guess is a bad connection somewhere or loss of communication with a module.
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      04-17-2020, 02:21 PM   #4
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Take a good look around under the hood and such and make sure a mouse/rat didn't decide to make your wiring it's lunch.
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      04-17-2020, 05:09 PM   #5
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Bad connection, or bad harness (as in a physical short). Did you drive the vehicle through standing water, had a recent accident or where you working on the car recently. These cars are not just going to develop a problem like that sitting in the garage. The errors are repeated and self evident. You have a bad connection to ground, therefor the electronics cannot complete the circuit.
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      04-17-2020, 09:11 PM   #6
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      04-18-2020, 11:31 AM   #7
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I recommend checking the main ground strap which on the E70 (pretty sure F15 is the same) is located drivers side next to from differential/steering. You can see it when underneath or when you pull the front drivers side wheel. These are notorious for corroding and breaking, causing all kinds of electrical gremlins. There is also another in rear of the truck up around the rear differential/muffler area
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      04-18-2020, 10:08 PM   #8
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Trying to troubleshoot this vehicle without knowing any of the history is a fools errand. An newer vehicle isn't going to kick those kinds of errors out of thin air. There must be some underlying issue that led to the car erroring out.
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      04-19-2020, 02:54 AM   #9
kblaade
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Quote:
Originally Posted by Sophisticated Redneck View Post
I recommend checking the main ground strap which on the E70 (pretty sure F15 is the same) is located drivers side next to from differential/steering. You can see it when underneath or when you pull the front drivers side wheel. These are notorious for corroding and breaking, causing all kinds of electrical gremlins. There is also another in rear of the truck up around the rear differential/muffler area
Thank you. I checked for those and can't seem to find any of them under the vehicle. In the trunk however there are 2 batteries both of which have their -ve to the frame of the vehicle. I believe for the 15 and 30 lines. Will do another check again just to reconfirm.
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      04-19-2020, 02:57 AM   #10
kblaade
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Quote:
Originally Posted by Chicane_S54 View Post
Trying to troubleshoot this vehicle without knowing any of the history is a fools errand. An newer vehicle isn't going to kick those kinds of errors out of thin air. There must be some underlying issue that led to the car erroring out.
Thank you. My worry though is it could it be a DME problem? I find it a bit confusing because I can read codes out of it successfully. I am still looking around for any apparent circuit breakage.
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      04-19-2020, 09:43 AM   #11
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Quote:
Originally Posted by kblaade View Post
Thank you. My worry though is it could it be a DME problem? I find it a bit confusing because I can read codes out of it successfully. I am still looking around for any apparent circuit breakage.
What is the recent history of this vehicle? These types of errors don't happen without an underlying condition.
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      04-19-2020, 10:11 AM   #12
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Every module throws a flag.... Time to replace the battery.
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Ones drove a Reliant Robin. )))
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      04-19-2020, 10:26 AM   #13
kblaade
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Quote:
Originally Posted by artem123 View Post
Every module throws a flag.... Time to replace the battery.
The vehicle was parked for a couple of months. Batteries are completely drained out. Primary and Auxiliary batteries. Will try trickle charging the batteries first and then see if that works. I ran checks with a jump cable connected to another battery. Probably not the best way to go.
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      04-19-2020, 10:31 AM   #14
kblaade
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Quote:
Originally Posted by Vdesai0326 View Post
Check to see if all connectors to affected dme (bank1 or bank2) are secure and not loose.
Checked those, they look fine. Will look around and see if I see anything unusual.
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      04-19-2020, 10:36 AM   #15
kblaade
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Quote:
Originally Posted by Chicane_S54 View Post
Bad connection, or bad harness (as in a physical short). Did you drive the vehicle through standing water, had a recent accident or where you working on the car recently. These cars are not just going to develop a problem like that sitting in the garage. The errors are repeated and self evident. You have a bad connection to ground, therefor the electronics cannot complete the circuit.
The car was involved in a minor collision. Nothing major but most importantly it has been sitting in the garage and the batteries are completely drained now. Tried jumpstarting. No case of water damage or flooding either.
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      04-19-2020, 02:03 PM   #16
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Quote:
Originally Posted by kblaade View Post
The car was involved in a minor collision. Nothing major but most importantly it has been sitting in the garage and the batteries are completely drained now. Tried jumpstarting. No case of water damage or flooding either.
Ok now we are getting some information. What damage was incurred in this 'minor collision'/ Front, back, repair professionally or by the owner?
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      04-19-2020, 02:51 PM   #17
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Quote:
Originally Posted by kblaade View Post
The car was involved in a minor collision. Nothing major but most importantly it has been sitting in the garage and the batteries are completely drained now. Tried jumpstarting. No case of water damage or flooding either.
Did you buy a salvage car?
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      04-21-2020, 04:25 PM   #18
kblaade
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Quote:
Originally Posted by Chicane_S54 View Post
Ok now we are getting some information. What damage was incurred in this 'minor collision'/ Front, back, repair professionally or by the owner?
Involved in a three car collision. A fender bender from behind and front. No major repairs, just some cosmetic damage.

On another note, everything seems to be pointing to the Integrated Supply Module or its connection with the DME and DME2. I will get those checked and see if that resolves the problem.

Thanks
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      04-21-2020, 06:07 PM   #19
turboawd
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Quote:
Originally Posted by kblaade View Post
Involved in a three car collision. A fender bender from behind and front. No major repairs, just some cosmetic damage.

On another note, everything seems to be pointing to the Integrated Supply Module or its connection with the DME and DME2. I will get those checked and see if that resolves the problem.

Thanks
So it hasn't started since the accident?
Isn't there a battery cable or fuse that blows in an accident?
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      04-21-2020, 07:28 PM   #20
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Quote:
Originally Posted by kblaade View Post
Involved in a three car collision. A fender bender from behind and front. No major repairs, just some cosmetic damage.

On another note, everything seems to be pointing to the Integrated Supply Module or its connection with the DME and DME2. I will get those checked and see if that resolves the problem.

Thanks
Ok, my man you need to START with THAT. You need to provide ALL the info because a late model vehicle like this isn't just going to have a series of faults like that out of thin air. Now that we know that the car was in a "fender bender" we know the cause of your problem. Have you checked the condition of the battery (check for cracks - check the posts to see if they are loose) and the battery cable connections (in fact check every inch of battery cable and all junctions, specifically check the negative to chassis cable? And yes check the ISM.
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      04-25-2020, 01:32 PM   #21
kblaade
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Quote:
Originally Posted by Chicane_S54 View Post
Ok, my man you need to START with THAT. You need to provide ALL the info because a late model vehicle like this isn't just going to have a series of faults like that out of thin air. Now that we know that the car was in a "fender bender" we know the cause of your problem. Have you checked the condition of the battery (check for cracks - check the posts to see if they are loose) and the battery cable connections (in fact check every inch of battery cable and all junctions, specifically check the negative to chassis cable? And yes check the ISM.
I finally found what the problem is. I checked the ISM and that was fine.

The issue was Fuse F503 in Fuse box Z3 in the trunk. Somehow, the fuse had gone out and was not supplying any power to the ISM.

I did a quick bypass of this fuse and the vehicle started. Did a diagnostic check again and most of the errors have cleared.

I will need to get a replacement for the fuse in the long term.
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      04-25-2020, 01:35 PM   #22
kblaade
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Quote:
Originally Posted by turboawd View Post
So it hasn't started since the accident?
Isn't there a battery cable or fuse that blows in an accident?
Fuse F503 - 125Amps in Fuse box Z3 went out. Maybe due to the accident. But that was the issue and I would get a permanent fix for that. Thanks again.
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