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1998 v70 AWD dome light problem, locks problem Help needed

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
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vernsimports
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1998 v70 AWD dome light problem, locks problem Help needed

Post by vernsimports »

I am unable to find a list of component numbers [ ie 2/75 or 7/39 ] with actual name of component . 1998 V70AWD
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volvolugnut
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Re: Help needed

Post by volvolugnut »

Are these component numbers from an electrical schematic? They sound like they are.
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Re: Help needed

Post by FLXC90 »

That's how those read to me also, pin and connector ids from schematic. What are you troubleshooting ( in mechanical terms)
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1998 V70 T5, 112k sat 5 years, still in mechanical coma (finally at the top of the pile )
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vernsimports
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Re: Help needed

Post by vernsimports »

Yes, electrical components . Have 3 issues , interior [ dome light ] does not shut off when doors are closed . Must switch off at dome light .
power door locks do not work with remote . Battery goes dead if left connected for several days .

Battery works fine in my S70 , so not the battery .

I am retired from my VOLVO shop now 12 years, so not a lot of experience with P80 electrical issues .
vernsimports
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Re: Help needed

Post by vernsimports »

Dome light assembly works fine in my S70 . Have several proper remotes but none work .
Might add, I have the AUTODIAGNOS MULTITESTER PRO which is what we used at the VOLVO dealership .
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Re: Help needed

Post by abscate »

I dont think the component numbers are preserved across model years, but 2/76 is the lock controller and 3/79 is the antenna ring in 1999. The component family 2/xxx will be preserved.

If you are having trouble with the courtesy lights coming on, there is a painful thread on that in this forum with 2/76 part number in the title.

No children should be in the room while it is being read.
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vernsimports
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Re: Help needed

Post by vernsimports »

Thanks ! Could the dome light issue and the door locks be connected ? I see several microswitches in door latch . Surely one tells the dome light that the door is closed ?
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Re: Help needed

Post by abscate »

Everything sends signals to the lock controller, which then grounds the lights through a power transistor

It’s a nasty complex system
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vernsimports
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Re: Help needed

Post by vernsimports »

Thanks, tried 2/76 thread search , but it was not found . How do I search thread for 2/76 ?
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Re: 1998 v70 AWD dome light problem, locks problem Help needed

Post by abscate »

This is for a 1999 so the system is different, but gives an idea of the complexity


viewtopic.php?p=498565#p498565
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