ECU issues

[docsims77]

Good afternoon everyone,
This is my first post here. I’m not a car guy, I fix people not cars, but I love my 1996 80 series land cruiser, I’ve had her for 15 years. I’m having some issues, she was parked in my garage for a few days, was running just fine, went to start her up and the battery was dead, my son hooked up the jumper cables backwards, had a little smoke from the battery cable, I decided to just charge the battery, after charging the battery, it still won’t start, the battery has a good charge, it turns over but won’t start. Headlights and wipers don’t work either. No power coming out of the coil, took the coil out and it’s still good, so I tried to plug in an OBD reader, there’s no power to the ODB port, I have checked all the fuses. Not sure what to do next, any help or suggestions would be greatly appreciated.

 

[george_tlc]

Did you check the fusible links?

backwards battery

forum.ih8mud.com

cheers,
george.

 

[BILT4ME]

You let the magic smoke out of the fusible links.

Something happened while you were away to cause a short.

Buy TWO sets of fusible links because you're going to smoke another diagnosing the problem.

Look for rodent chewed wires.

Have you had issues with your factory alarm doing weird stuff?
Have you recently added something electrical (stereo, fog lights, ditch lights, dual battery, refrigerator, ventilator)?

Disconnect fusible link set and use a multimeter to look for current draw BEFORE you install the new links.

 

[Kernal]

Here's some photos to get you oriented, the fusible links come off
the positive battery post clamp:

 

[jonheld]

Get them from Joey.

Fusible Link for 80 Series Land Cruiser

Fuseable Link for 80 Series Land Cruiser (FLK-1)

absolute-wits-end.com

 

[tacocat]

Yup, those seem like they work. Was trying to avoid any welding but this seems way cheaper than any bolt on options by over $1000+

You let the magic smoke out of the fusible links.

Something happened while you were away to cause a short.

Buy TWO sets of fusible links because you're going to smoke another diagnosing the problem.

Look for rodent chewed wires.

Have you had issues with your factory alarm doing weird stuff?
Have you recently added something electrical (stereo, fog lights, ditch lights, dual battery, refrigerator, ventilator)?

Disconnect fusible link set and use a multimeter to look for current draw BEFORE you install the new links.

I agree with the above. There is some parasitic drain, and you’ll need some fusible links.

BILT, I think you may have missed the part where his son jumped the car backward (not Blues Brothers style jump) that caused the short.

 

[thabruiser]

Also, don't assume you have a parasitic draw. After getting your fusible links sorted, I'd recommend testing the battery itself. Many problems with electrical issues on 12v systems are due to an old, weak, or otherwise defective battery. And, whenever testing for any electrical issues on a vehicle, it is a good rule of thumb to make sure you have a known good battery. Hope this helps.

 

[BILT4ME]

I agree with the above. There is some parasitic drain, and you’ll need some fusible links.

BILT, I think you may have missed the part where his son jumped the car backward (not Blues Brothers style jump) that caused the short.

Thanks, I did miss that.

Good chance it killed the battery as well as the alternator.

Install new fusible links and check charging system.

This is part of the reason why they are there.

 

[baldilocks]

Good afternoon everyone,
This is my first post here. I’m not a car guy, I fix people not cars, but I love my 1996 80 series land cruiser, I’ve had her for 15 years. I’m having some issues, she was parked in my garage for a few days, was running just fine, went to start her up and the battery was dead, my son hooked up the jumper cables backwards, had a little smoke from the battery cable, I decided to just charge the battery, after charging the battery, it still won’t start, the battery has a good charge, it turns over but won’t start. Headlights and wipers don’t work either. No power coming out of the coil, took the coil out and it’s still good, so I tried to plug in an OBD reader, there’s no power to the ODB port, I have checked all the fuses. Not sure what to do next, any help or suggestions would be greatly appreciated.

How did you verify that the battery was dead before the mayhem began? I once drove a new to me 80 series down to the bank and parked it. When I came out a few minutes later I turned the key and got nothing. A wiggle of the battery cable terminal at the battery was all it took for it to start as it had before.

But before you checked terminal contact your proceeded to connect the defibrillator backwards and burn up the fusible links so it would seem to me that you are back at the beginning once new links are installed.

Ensure you have a good battery with clean connectiontions and that the check engine light and all the other warning lights illuminates when the key is turned to on.

My bet is that the original problem was a bad battery or poor battery connections.