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96 Volvo 850 Climate Control Blinking Lights

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
T64me
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Re: 96 Volvo 850 Climate Control Blinking Lights

Post by T64me » Mon Jun 11, 2018 5:59 pm

I elected to try the 850 OBD-II app. I have not been successful in finding any ECC codes with that app at all... The info screen in the app shows:

OBDII PIDs
ECU 1F has PIDs (01) supported
ECU17 has PIDs (01) (03) (04) (05) (06) (07) (0C) (0D) (0E) (10) (11) (14) supported
MIL OFF: DTC: 0 codes

I was hoping it would show some sort of ECC fault, but no such luck.

Anyone out there have any experience with this app that can tell me what I am doing wrong?

Anyone willing to rent me your ECC DIY tool? I really want to get this car fixed properly!!!



Klausc
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Re: 96 Volvo 850 Climate Control Blinking Lights

Post by Klausc » Mon Jun 11, 2018 6:11 pm

You don't need a tool. You need 3 wires. 18 gauge will do. And 3 large paper clips, along with a test light. Use the diagram at the top of this link viewtopic.php?f=37&t=60660
but instead of port 3, use port 6 for the ECC.
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jreed
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Re: 96 Volvo 850 Climate Control Blinking Lights

Post by jreed » Tue Jun 12, 2018 5:10 am

If it's of use, I wrote up a similar homebrew how-to for reading the codes in the ECC:
viewtopic.php?t=50525


1997 855 GLT (Light Pressure Turbo) still going strong. Previous: 1986 240 GL rusted out in '06, 1985 Saab 900T rusted out in '95, 1975 Saab 99 rusted out in '95, 1973 Saab 99 rusted out in '94

Chuck W
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Re: 96 Volvo 850 Climate Control Blinking Lights

Post by Chuck W » Tue Jun 12, 2018 8:19 am

Yes. Build one of the DIY code readers.

My wife's '97 GLT was throwing all sorts of ECC codes and having that was a BIG help in getting rid of the flashing lights.


On a side note, I downloaded the 850 OBD-II app and hope that I can clear the "Service" lights from both of our '97's.



RickHaleParker
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Re: 96 Volvo 850 Climate Control Blinking Lights

Post by RickHaleParker » Tue Jun 12, 2018 8:22 am

Anyone out there have any experience with this app that can tell me what I am doing wrong?

What bluetooth dongle do you have.?

850 OBD-II supports ELM327(1.4b onwards) or USB ObdLinkSX via OTG support. If you have one of the cheap ass ELM327 knock offs, that could be a problem, most are v1.2 or lower and not well done. There is a app on Google play named "Elm327 Check Version" that does what the name implies.


1997 S90, B6304S, AW30-42
1998 C70, B5234T3, AW50-42

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