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96 Volvo 850 Climate Control Blinking Lights

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T64me
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Post by T64me »

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!!!
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Klausc
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Post by Klausc »

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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If I had a larger garage, I could have more Volvos.
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jreed
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Post by jreed »

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
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Chuck W
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Post by Chuck W »

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.
'97 855 GLT - Hers. RN swap/16T/COP/VVT/exhaust/302s/Flashed M4.4/ chassis bracing/ 2 kid seats
'78 GLE - Waiting in the wings. Future whiteblock/T5 swap.
'97 854 T5 - Manual Swap/M4.4/COP/NA cams/P2R Brakes/16T/ chassis bracing/ XC70 nose swap - SOLD/GONE
The Others- '83 TBird turbo, '85 Mercury Marquis LTS (1 of 134), '86 LTD Wagon, '81 Granada GL, '76 Beetle, '87 F-150 5.0
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RickHaleParker
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Post by RickHaleParker »

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.
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