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Close lightning strike,,now getting codes??

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Old Jul 15, 2009 | 11:55 PM
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Default Close lightning strike,,now getting codes??

The other day we had a sudden storm blow up,,and lightning hit a tree and the ground about 15 feet away from the vet(and only about 12 feet from our door that I was looking out it's window at the time)!! The next day started getting traction control,,ABS and active handling messages. Have been driven it several times,,clearing codes and throwing new ones,,,the baffling thing is they are not very consistent on the codes! The only regular one is 28TCS--1232. Sometimes it adds BCM--B2723 and sometimes BO RFA U1096 & U1016 and once U1096. Never threw ANY of these before!?! Battery never drops below 12.8,12.9 at the terminals,,alt shows 14.2(give or take a few points) at the terminals shortly after start up. Any ideas,comments or suggestions??? Gene
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Old Jul 16, 2009 | 10:58 AM
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dont worry about 1096 and 1016. not sure on the others.
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Old Jul 16, 2009 | 11:54 AM
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Since this happened after a severe storm I would first pull the left front wheel and take apart the Wheel Speed sensor connector and check for wetness, corrosion, etc. Make sure the two pins are making good contact with the both sides of the connector. If that looks good then check the resistance of the sensor circuit with a DMM. It should be between 850 and 1130 ohms. If that is good then you will need to check continuity of the two wires back to the EBCM connector.

A lightening strike near the car could have generated a sufficiently high electrical surge to damage the electronic modules in the car but you need to check the things that are the most common causes of this code first.

Bill
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Old Jul 16, 2009 | 04:13 PM
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Originally Posted by Bill Dearborn
Since this happened after a severe storm I would first pull the left front wheel and take apart the Wheel Speed sensor connector and check for wetness, corrosion, etc. Make sure the two pins are making good contact with the both sides of the connector. If that looks good then check the resistance of the sensor circuit with a DMM. It should be between 850 and 1130 ohms. If that is good then you will need to check continuity of the two wires back to the EBCM connector.

A lightening strike near the car could have generated a sufficiently high electrical surge to damage the electronic modules in the car but you need to check the things that are the most common causes of this code first.

Bill
Will do,,I think the yard is dry enough to get around back so I can get to my shop(have to get the shark out first). Can get it up on the lift and check as many sensors and grounds as I can find(read Bill's sticky at the top). It has been spending quite a bit of time outside as the attached garage is out of commission for the time being,,the strike is the new wild card here,,and that is my worry that the electromagnetic field could have overloaded a computer. the strike was potent enough to blow several chunks of concrete out of the driveway curbing,,not very far from the car. The odd thing is my pick-up was parked next to the tree and was OK!! Have several little things I want to do while I'm under there. I have a digital multi-meter,, can you give a description on how to check resistance?? I've torn many motors etc. apart,,LOTS of mechanical things,,but am a REAL green horn with electrical stuff outside of voltage testing and stuff like that. Thanks,,Gene
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Old Jul 16, 2009 | 05:01 PM
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Man thats crazy! I would check for some blown fuses and look at the ECU for any burnt looking areas. I hope its nothing major and good luck on it
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Old Jul 16, 2009 | 06:17 PM
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the car is grounded by the tires, its probably just an odd coinsidence.
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Old Jul 16, 2009 | 07:13 PM
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Originally Posted by vetteJR
the car is grounded by the tires, its probably just an odd coinsidence.
I've wondered about that,,but that close,,,the massive voltage puts out a small/localized EMP,,,it didn't touch the house or any wiring,,,but it knocked out 3 TV's and the sound card and internet card in my computer!! So I'm really undecided as this is a very strong suspect to just call a coincidence! Not saying it isn't,,but it was a very powerful strike. The drive is bordered by 6"X8'' X7 ft. concrete lentils,,,and it blew the ends off of 4 of them. Never had codes ever(car has almost 71K),,,except for the good old infamous column lock last year. Then the next day codes,,,it does make you suspicious!! Got to find out how to do a resistance as tomorrow I'm putting her up on a lift and try to check everything I can find!!
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Old Jul 16, 2009 | 11:00 PM
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The electrical system is designed to take spikes and overvoltage (like from solenoids and switches, motors). However this is like you say an EMP pulse...

I would try disconnecting the bat, then clear the codes again. Maybe use a professional scanner and start checking sensors in real time. Try swapping a new ECU?
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Old Jul 16, 2009 | 11:26 PM
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With a massive electrostatic discharge and the emp pulse from it, the sensitive electronics onboard are going to have a problem being that close to the strike. You're going to need a tech2 scan tool and start replacing units. I have to wonder if this would be covered by the insurance?
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Old Jul 16, 2009 | 11:35 PM
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wow. i never knew that!
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Old Jul 17, 2009 | 12:27 AM
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Originally Posted by dgrant3830
With a massive electrostatic discharge and the emp pulse from it, the sensitive electronics onboard are going to have a problem being that close to the strike. You're going to need a tech2 scan tool and start replacing units. I have to wonder if this would be covered by the insurance?
Going to check all the obvious things,,might have to look into the insurance thing in the end. Did the battery disconnect,,and have been clearing codes. The odd thing is while the same warnings pop up it's not always the same codes. The really weird thing is my F-150 super crew was actually partially UNDER the tree,,not a problem,,maybe the metal body?? The only steady code is TCS 1232,,frequent BCM-B2723 nd several RFA--U1016-1064-1096 anybody know what they mean???
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Old Jul 17, 2009 | 11:27 AM
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B2723 PASS-Key Detection Circuit
C1232 LF Wheel Speed Circuit Open or Shorted
U1016 Loss of Communication with PCM
U1064 Loss of Communication with BCM
U1096 Loss of Communication with IPC

I would get down to the wheel and look for something suspicious on that wheel speed sensor. I wouldn't think the static would have got it, but anything is possible. Says its shorted out therefore needs to be looked at right away. Clean the pellet on your key and lastly, check out the star connector down adjacent to the BCM.
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Old Jul 17, 2009 | 11:34 AM
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Originally Posted by dgrant3830
B2723 PASS-Key Detection Circuit
C1232 LF Wheel Speed Circuit Open or Shorted
U1016 Loss of Communication with PCM
U1064 Loss of Communication with BCM
U1096 Loss of Communication with IPC

I would get down to the wheel and look for something suspicious on that wheel speed sensor. I wouldn't think the static would have got it, but anything is possible. Says its shorted out therefore needs to be looked at right away. Clean the pellet on your key and lastly, check out the star connector down adjacent to the BCM.
Thanks for the info,,,I should be getting it on the lift today. I know they have computers tucked in every where,, does any one have a diagram or can explain where some of the key ones are,,in particular the BCM?? that one seems to be the most frequent one popping up!
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Old Jul 17, 2009 | 11:38 AM
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The BCM is in the passenger footwell. Remove the passenger floorboard and its right there in front of you. Look for evidence of water on it. Remember, do not dissconnect it with the battery still connected.
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Old Jul 17, 2009 | 12:24 PM
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Originally Posted by dgrant3830
The BCM is in the passenger footwell. Remove the passenger floorboard and its right there in front of you. Look for evidence of water on it. Remember, do not disconnect it with the battery still connected.
Got ya,,right in there with the fuse block ,,was in there a long time ago when I did my CLB. Since I have you attention,,do you know how the steps to do a resistance test on the sensor connection.Bill Dearborn gave me the values earlier,,and I have a digital multi-meter,,but only used it for various voltage readings,,never tested resistance. Any help would be appreciated. Want to get it narrowed down as close as possible. Want do do as much as I can before I go anywhere.Far too many "PROS" ,even dealers just make educated guesses and just throw parts at it and charge YOU up the wazoo and hope it works!! Been a DIY shadetree for decades,,and HATE taking a car to a shop!!

Last edited by itzza427; Aug 20, 2009 at 12:00 AM.
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Old Jul 17, 2009 | 12:25 PM
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Originally Posted by dgrant3830
The BCM is in the passenger footwell. Remove the passenger floorboard and its right there in front of you. Look for evidence of water on it. Remember, do not disconnect it with the battery still connected.
Got ya,,right in there with the fuse block is,,was in there a long time ago when I did my CLB. Since I have you attention,,do you know how the steps to do a resistance test on the sensor connection.Bill Dearborn gave me the values earlier,,and I have a digital multi-meter,,but only used it for various voltage readings,,never tested resistance. Any help would be appreciated. Want to get it narrowed down as close as possible. Want do do as much as I can before I go anywhere.Far too many "PROS" ,even dealers just make educated guesses and just throw parts at it and charge YOU up the wazoo and hope it works!! Been a DIY shade tree for decades,,and HATE taking a car to a shop!!
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Old Jul 17, 2009 | 04:32 PM
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Sorry, Bill Dearborn and Bill Curlee are the ones you need to talk to for the resistance measurements. I no longer have my C-5 manuals.
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To Close lightning strike,,now getting codes??

Old Jul 17, 2009 | 05:01 PM
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Since it was a storm and you seem to have recieved a lot of rain,are you sure this isnt water related?
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Old Jul 17, 2009 | 05:30 PM
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If you only had a FLUX capacitor.... you could have went Back to the Future...

Just joking man. I hope you get it all worked out.


Originally Posted by itzza427
The other day we had a sudden storm blow up,,and lightning hit a tree and the ground about 15 feet away from the vet(and only about 12 feet from our door that I was looking out it's window at the time)!! The next day started getting traction control,,ABS and active handling messages. Have been driven it several times,,clearing codes and throwing new ones,,,the baffling thing is they are not very consistent on the codes! The only regular one is 28TCS--1232. Sometimes it adds BCM--B2723 and sometimes BO RFA U1096 & U1016 and once U1096. Never threw ANY of these before!?! Battery never drops below 12.8,12.9 at the terminals,,alt shows 14.2(give or take a few points) at the terminals shortly after start up. Any ideas,comments or suggestions??? Gene
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Old Jul 17, 2009 | 09:09 PM
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Originally Posted by itzza427
the strike was potent enough to blow several chunks of concrete out of the driveway curbing,,not very far from the car. The odd thing is my pick-up was parked next to the tree and was OK!! Have several little things I want to do while I'm under there. I have a digital multi-meter,, can you give a description on how to check resistance?? I've torn many motors etc. apart,,LOTS of mechanical things,,but am a REAL green horn with electrical stuff outside of voltage testing and stuff like that. Thanks,,Gene
Just put the DMM into resistance mode and select the correct resistance range for the value you are looking for so you can see the value. This is just basically moving the decimal point so the number is easily read.

Since this damaged your driveway and electrical items in the house it may be covered by your auto's comprehensive insurance the sameway as the household items are covered by your homeowners insurance. Hopefully, you have a low deductible on the comp. Talk to the insurance agent before you do any real work on the car.

Bill
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