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ECM-6300 and ECM-6B00 2000 V70R [BAD Battery to fusebox supply cable!] EPIC Troubleshooting Topic is solved

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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abscate
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Re: ECM-6300 and ECM-6B00 2000 V70R

Post by abscate » Fri Aug 09, 2019 7:32 am

I've never been totally stumped by a car before, this is a first.
Fixed that quote for you. Congratulations.

Persistence is the first cousin of perseverance.

Please do the honor of either checking the green box


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Re: ECM-6300 and ECM-6B00 2000 V70R

Post by abscate » Fri Aug 09, 2019 7:36 am

scot850 wrote:
Mon Jul 22, 2019 7:44 am
I'm sure you have already checked or swapped the B+ cable in the main fusebox and the electrical portion of the ignition switch?

The B+ cable can look ok, but undo the nut in the fusebox and look at the cable under it. Mine looked ok, but found it had almost totally melted and had bare areas that could potentially short out.

Not sure if it would help, but I have a spare ECU from a 2000 V70R, and also a ETM from a 2000 V70XC that I had connected to my 2000 V70R as suggested by precopster to see if it worked. It whined like a good un so should be good. Also think I may have a good electrical portion of an ignition switch. If you fail to get any further I can send the parts for you to swap out on a trial basis. I would like them back as they are my back up stash.

Neil.
Awarded this year of our Swede 2019 for nailing it..
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Re: ECM-6300 and ECM-6B00 2000 V70R [BAD Battery to fusebox supply cable!] EPIC Troubleshooting

Post by bmdubya1198 » Fri Aug 09, 2019 7:54 am

I knew I'd figure it out eventually, it was just really getting on my nerves... I'm a little annoyed that it took me so long, but I'm happy to have this behind me! I wish it also fixed the whiny ETM, but I'm fairly confident I can have that fixed today.

Neil gets the honorary "topic solved" for his post! Shame on me for not checking that terminal more closely earlier!


2000 V70R Venetian Red/Charcoal M56 Swapped 188k
2001 S60 2.4T Black/Black 230k
2003 S60 2.4T Silver/Black 106k
2007 XC90 V8 AWD Sport Titanium Grey/Black 155k
1998 S90- Silver/Gray 207k
Sold-
1998 V70 GLT Black/Beige 193k
1995 850 GLT Tropic Green... crushed
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it

Need used parts? PM me!

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Re: ECM-6300 and ECM-6B00 2000 V70R [BAD Battery to fusebox supply cable!] EPIC Troubleshooting

Post by scot850 » Fri Aug 09, 2019 7:42 pm

Thanks for the thanks, but glad you got to the bottom of the issue eventually. It is a strange issue with the B+ cables. Seems to affect the 99/00 'bastards' more than earlier ones for some reason, although earlier cars are not strangers to the issue as well. I have read of cars going on fire and underhood fires caused by this issue, so all take heed and been warned! Check carefully!!

As to the whining ETM, maybe it is just like that? These 'R's are needy cars so how better to keep your attention than whine all the time!!

My ETM also whines but only for a short period after turning the ignition key. Did you try another ETM to see if it does the same?

Neil.


2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

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abscate
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abscate

Re: ECM-6300 and ECM-6B00 2000 V70R [BAD Battery to fusebox supply cable!] EPIC Troubleshooting

Post by abscate » Sat Aug 10, 2019 3:38 am

I think there is a whiny ETM thread going on this one.

I’ve noticed on my 99 I had to remove all the relays and clean heavy oxidation off the spade terminals twice over 20 years. Maybe humid air is reaching the box on these, redesigned from -1998?


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Re: ECM-6300 and ECM-6B00 2000 V70R [BAD Battery to fusebox supply cable!] EPIC Troubleshooting

Post by bmdubya1198 » Sat Aug 10, 2019 7:33 am

I'm not sure, I almost feel like the noise is between the firewall and engine now. But sound travels, so I can't confirm. Weird...


2000 V70R Venetian Red/Charcoal M56 Swapped 188k
2001 S60 2.4T Black/Black 230k
2003 S60 2.4T Silver/Black 106k
2007 XC90 V8 AWD Sport Titanium Grey/Black 155k
1998 S90- Silver/Gray 207k
Sold-
1998 V70 GLT Black/Beige 193k
1995 850 GLT Tropic Green... crushed
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it

Need used parts? PM me!

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