X100 Event Data Recorder
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Event Data Recorders (EDR), aka "Flight Data Recorders," aka "Black Boxes" in automobiles have been around (in the USA) since 1990. Early recorded data recorded was limited but included speed and seat belt use, which greatly aided both law enforcement and manufacturers in accident investigations. In 2014, the Feds mandated that every new recorder must track at least 15 variables, including vehicle speed, throttle position, airbag deployment times, whether the brakes were applied, if seatbelts were worn, engine speed, steering angles and more. Recorded time is about 20 seconds, and loops continuously until the inertia switch senses an accident and activates.
Manufacturers may also have up to 30 additional data points if they want, (excluding GPS location, video and/or audio). I would imagine that any Jaguar with an ECU/ECM and any amount of non-volatile memory records data for accidents as well as standard operational considerations.
Manufacturers may also have up to 30 additional data points if they want, (excluding GPS location, video and/or audio). I would imagine that any Jaguar with an ECU/ECM and any amount of non-volatile memory records data for accidents as well as standard operational considerations.
Last edited by Redline; 07-31-2018 at 11:44 AM.
#5
Thank you for the replies.
Two motives, (1) trying to understand what someone did while driving my car and (2) figuring out how to get it back on the road after a tail first, trunk deep, dip in a marsh.
From what Redline said, is there at least a speed recorded somewhere? In the ECM? If so would a tripping of the inertia switch would be required to store the data? (no airbag deployment).
Where would the inertia switch be located on a 2001 XKR?
If I briefly connect the battery the fuel pumps can be heard. (as well as doors locking and unlocking, random seat movement and windows that won't move). Are the fuel pumps indicative of the inertia switch not being tripped or water in the relays? My thinking is that if the inertia switch has tripped then there may be data to find. if the switch requires a manual reset then locating the switch an noting if it resets would be a good first step. Unless of course nothing is retained prior to model year 2003 as Bob indicated.
So sad.., fresh water from the top of trunk relays to the bottom of the brake pedal. (rear-end was downslope) Aside from the water, not a scratch.
Two motives, (1) trying to understand what someone did while driving my car and (2) figuring out how to get it back on the road after a tail first, trunk deep, dip in a marsh.
From what Redline said, is there at least a speed recorded somewhere? In the ECM? If so would a tripping of the inertia switch would be required to store the data? (no airbag deployment).
Where would the inertia switch be located on a 2001 XKR?
If I briefly connect the battery the fuel pumps can be heard. (as well as doors locking and unlocking, random seat movement and windows that won't move). Are the fuel pumps indicative of the inertia switch not being tripped or water in the relays? My thinking is that if the inertia switch has tripped then there may be data to find. if the switch requires a manual reset then locating the switch an noting if it resets would be a good first step. Unless of course nothing is retained prior to model year 2003 as Bob indicated.
So sad.., fresh water from the top of trunk relays to the bottom of the brake pedal. (rear-end was downslope) Aside from the water, not a scratch.
#6
If the inertia switch tripped, there should be some information data recorded, and a probable "P1582" code stored. Most OBDII readers would show the code, but it would take the dealer SDD software to read/erase the code & data.
Shamelessly borrowed from another Forum referencing a 2003 XJ:
"P1582" Flight recorder data stored
This code is generated by one of the following issues
1) Inertia switch activated
2)Throttle failure causes default limp home mode
3)Engine starts and stumbles
4)Engine fails to start
5)engine stall (Apparently this code is generated if you let go of the key before the car starts as it logs it as a failure to start.)
Look inside the fuse box at the left side of the dash; the inertia switch should be in there. From JagRepair.com:
Shamelessly borrowed from another Forum referencing a 2003 XJ:
"P1582" Flight recorder data stored
This code is generated by one of the following issues
1) Inertia switch activated
2)Throttle failure causes default limp home mode
3)Engine starts and stumbles
4)Engine fails to start
5)engine stall (Apparently this code is generated if you let go of the key before the car starts as it logs it as a failure to start.)
Look inside the fuse box at the left side of the dash; the inertia switch should be in there. From JagRepair.com:
"The inertia switch is installed next to the fuse box in the LH end of the fascia. When activated, it de-energizes the ignition relays in the engine compartment, driver's side fascia and trunk fuse boxes. It also removes ground inputs from the BPM and windshield wiper stalk switch. This stops the engine and fuel pump, unlocks any locked door, and de-energizes unnecessary electrical systems. The switch is reset by pressing down on the rubber cap on the top of the switch. If your doors lock, windows, seats and the wipers work and the dash lights up then all should be good, but if it makes you feel better reset the inertia switch."
For more information, go to http://www.jagrepair.com/JaguarXKXJSTypeNoStart.htm
For more information, go to http://www.jagrepair.com/JaguarXKXJSTypeNoStart.htm
Last edited by Redline; 07-31-2018 at 11:45 AM.
#7
The ECM did not get wet, but unable to connect through OBD port. Thought if I could find the inertia switch then I would know if worth the effort to send in ECM for data retrieval... if any. Any idea where the inertia switch is? Also Motorcarman Bob or Avos, please weigh in if there could be anything found to begin with since this is a 2001MY.
As for getting back on the road. If the water line was from the top of the battery to the bottom of the gas pedal, I am thinking seat modules and trunk relays are the affected components I can think of of the top of my head. Any insight as to hidden electronics in that wet area I should look for?
Thank you
As for getting back on the road. If the water line was from the top of the battery to the bottom of the gas pedal, I am thinking seat modules and trunk relays are the affected components I can think of of the top of my head. Any insight as to hidden electronics in that wet area I should look for?
Thank you
Last edited by knowsnot; 07-31-2018 at 10:49 AM.
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toaster (07-31-2018)
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#11
Thanks for your help and answers Bob.
I cant seem to connect to the ECM but could prior to this event.
If My ECM was some how damaged by water, I assume with proper programming I could use a replacement. (several on E-Bay)
Assuming the anti-theft security code and other data is not retrievable, is the dealership the only one who can program a replacement unit? Any Idea as to costs of said programming?
I cant seem to connect to the ECM but could prior to this event.
If My ECM was some how damaged by water, I assume with proper programming I could use a replacement. (several on E-Bay)
Assuming the anti-theft security code and other data is not retrievable, is the dealership the only one who can program a replacement unit? Any Idea as to costs of said programming?
#12
Taking a step back, there are probably resources online that explain steps to restore a flooded car, and for electronics in particular...
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motorcarman (08-01-2018)
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