Seriously stumped

Gee, does anyone other than me think it might be a good idea to figure out what fried those drivers?

I'm not as intimately familiar with the DII ECU as the others but I think I would want to know what caused those to fail so dramatically.

I think I'd be doing some disassembly to expose the harness as I suspect the harness might be compromised
 

discostew

Well-known member
Sep 14, 2010
7,745
1,026
Northern Illinois
Gee, does anyone other than me think it might be a good idea to figure out what fried those drivers?

I'm not as intimately familiar with the DII ECU as the others but I think I would want to know what caused those to fail so dramatically.

I think I'd be doing some disassembly to expose the harness as I suspect the harness might be compromised


If no signs of water could have been jumped with reversed polarity . Or somebody let the smoke out of it with a power probe . I bet you sell the shit out of those don't you pt ? That video showed what they do best .
 
If no signs of water could have been jumped with reversed polarity . Or somebody let the smoke out of it with a power probe . I bet you sell the shit out of those don't you pt ? That video showed what they do best .

Sigh.

I would sure as shit hope they are protected against reverse polarity.

As for Power Probes, they are nothing more than a jump lead with a meter (or fancy digital display depending upon model).

In the hands of a skilled technician, they are a fantastic tool. But, as you've apparently only experienced the skill level of Factory Trained Land Rover mechanics, I'm not surprised that you've only seen them used in a manner that caused more damage. Then again, there probably is no Land Rover service instruction indicating one should use a Power Probe and God knows, Dealer techs HAVE to follow the diagnostic tree or they won't be paid for the diagnosis.

I had a "Customer" try to diagnose a problem with an HID lighting system with a 12 volt circuit tester. I tried to tell him it wasn't the right tool but he kept telling me he knew what he was doing.

Shortly after hearing the zap, I told his brother that he might want to investigate his brother because ti appeared as though he might have shocked himself pretty badly because it looked like he was unconscious.

I refused to warranty his blowed up circuit tester because I'd just told him it was not the right tool for the job.

When I see driver transistors cooked like that, I expect to find a short circuit or other excessive load has been placed upon the output. Hence my comment about investigating further before just slapping a new ECU into the vehicle.
 

discostew

Well-known member
Sep 14, 2010
7,745
1,026
Northern Illinois
PT you must of had some bad experience with a dealer tech . I can see how you could feel like working on this technology can only be done by the lowest skill level. Keep in mind that any technology we talk about on this board was obsolete when Land Rover was using it 20 years ago.

And then there is the fact that the service manual is incorrect about the fuel pump circuit we talked about earlier . A disco2 will not run the fuel pump untill it sees crank a crank signal . Who fucking cares right ? I really dont either , my truck runs great .
 

discostew

Well-known member
Sep 14, 2010
7,745
1,026
Northern Illinois
slap the fucking new ecu in it there a dime a dozen . worry about it if another one frys . Or get it up to 88 mph so time goes backward and you dont buy it . That was the best suggestion yet .
 
PT you must of had some bad experience with a dealer tech . I can see how you could feel like working on this technology can only be done by the lowest skill level. Keep in mind that any technology we talk about on this board was obsolete when Land Rover was using it 20 years ago.

No, I worked at a Rover store. I saw some of the worst technique ever there and it was attributed to LRU training.

Yes, I had 20 years experience on all of them.