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My new pain - 2000 project V70 and random dash lights 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

scot850
Posts: 5594
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
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scot850

Re: My new pain - 2000 project V70 and random dash lights

Post by scot850 » Wed Jul 26, 2017 4:31 pm

Yes I tried removing all the codes. Figured out how to do that playing with the system in Fault Trace mode. Only one that was tricky was the CDM-0001. This required an engine cycle to remove. It did not in fact remove but went from a red to green status on the stop light.

Drove the car about 100m and both STC and ABS lights came back on. So assuming the issue is another bad ABS module. Came up with ABS codes: 0070, 0092, 0093, 0095. 0070 is the pump motor, other 3 are control module communication errors. Strangely no CDM-0001 code when these were on this time.

Tried a simple trick a friend did wit his of wedging a golf tee between the connector body and the ABS pump as in his case this 'fixed' the warning lights he was getting. Made no difference. Have to say the main power lead to the pump does not feel particularly tight when fitting it back on. Maybe it is a bad connection. Does this happen?

Guess I will have to wait for the re-built unit to see if it cures the issues or if it just confirms something else is screwed with this car.

Thanks for helping.

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

scot850
Posts: 5594
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 9 times
Been thanked: 150 times
Canada
scot850

Re: My new pain - 2000 project V70 and random dash lights

Post by scot850 » Wed Jul 26, 2017 4:33 pm

Yes I tried removing all the codes. Figured out how to do that playing with the system in Fault Trace mode. Only one that was tricky was the CDM-0001. This required an engine cycle to remove. It did not in fact remove but went from a red to green status on the stop light.

Drove the car about 100m and both STC and ABS lights came back on. So assuming the issue is another bad ABS module. Came up with ABS codes: 0070, 0092, 0093, 0095. 0070 is the pump motor, other 3 are control module communication errors. Strangely no CDM-0001 code when these were on this time.

Tried a simple trick a friend did wit his of wedging a golf tee between the connector body and the ABS pump as in his case this 'fixed' the warning lights he was getting. Made no difference. Have to say the main power lead to the pump does not feel particularly tight when fitting it back on. Maybe it is a bad connection. Does this happen?

Guess I will have to wait for the re-built unit to see if it cures the issues or if it just confirms something else is screwed with this car.

Thanks for helping.

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

scot850
Posts: 5594
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 9 times
Been thanked: 150 times
Canada
scot850

Re: My new pain - 2000 project V70 and random dash lights

Post by scot850 » Wed Jul 26, 2017 4:45 pm

Yes I tried removing all the codes. Figured out how to do that playing with the system in Fault Trace mode. Only one that was tricky was the CDM-0001. This required an engine cycle to remove. It did not in fact remove but went from a red to green status on the stop light.

Drove the car about 100m and both STC and ABS lights came back on. So assuming the issue is another bad ABS module. Came up with ABS codes: 0070, 0092, 0093, 0095. 0070 is the pump motor, other 3 are control module communication errors. Strangely no CDM-0001 code when these were on this time.

Tried a simple trick a friend did wit his of wedging a golf tee between the connector body and the ABS pump as in his case this 'fixed' the warning lights he was getting. Made no difference. Have to say the main power lead to the pump does not feel particularly tight when fitting it back on. Maybe it is a bad connection. Does this happen?

Guess I will have to wait for the re-built unit to see if it cures the issues or if it just confirms something else is screwed with this car.

Thanks for helping.

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

scot850
Posts: 5594
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 9 times
Been thanked: 150 times
Canada
scot850

Re: My new pain - 2000 project V70 and random dash lights

Post by scot850 » Thu Jul 27, 2017 1:33 pm

Well possibly some progress! With the faulty used ABS module now in place I took the car for a run today. Today it was totally predictable in how it operated. Both ABS/STC lights were on all the time, even after stop/start and standing while in a store. Temp was over 90F (about 32-33C) today.

Speedo/trip/milometer all worked as they should as did the outside temperature gauge. So hopefully they are all symptoms of the original ABS unit failing big-time. The PnP one is also screwed, but at least stable so far.

Swapped the turn signal lever for the PnP used one and it also worked correctly today. So, maybe, just maybe starting to see some light at the end of the tunnel (and it is not a railway locomotive coming to run me over!!).

If the replacement ABS unit ever arrives (no idea why Canada Post/Customs have held it for so long?!) I will update this thread one way or another.

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: My new pain - 2000 project V70 and random dash lights

Post by abscate » Thu Jul 27, 2017 6:36 pm

Canada post is holding all AB mail as undeliverable since Justin forgot you...


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

scot850
Posts: 5594
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 9 times
Been thanked: 150 times
Canada
scot850

Re: My new pain - 2000 project V70 and random dash lights

Post by scot850 » Thu Jul 27, 2017 8:15 pm

Thanks for the reminder! I forgot we no longer exist!

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

scot850
Posts: 5594
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 9 times
Been thanked: 150 times
Canada
scot850

Re: My new pain - 2000 project V70 and random dash lights  Topic is solved

Post by scot850 » Mon Jul 31, 2017 2:11 pm

While I am now cautiously that the re-built ABS module from Matty at Mid-West ABS has fixed all the random issues, I will need more time/distance to be sure.

The unit turned up last Friday out of the blue. Good old Canada Post had the unit showing as being in Ontario and due for delivery this Wednesday!

Took about 20 minutes to swap out for the wonky PnP unit, and once battery was re-connected and engine started there were not warning lights on. Took the car for a 5km short test run and no lights came on.

Today took it for another 15km run with 5 x stop/start cycles and still so far so good! While trying not to get ahead of myself, I would like to thank in particular Matt at Mid-West ABS (marvelous service and help/advice) and our friend down-under Mike (precopster) for their advice and encouragement in this process. Thanks too to all others who also chimed in!

So to summarise:

The issues the car was displaying were:

1) Speedo dropping out randomly
2) Trip/milometer LCD display dropping in/out and going to '-------' on display
3) Temp LCD readout (why that was affected I am not sure) now appears to work all the time and not randomly not work with a 'disC' displayed on the LCD readout.
4) ABS/STC/Brake/Engine check-lights coming on and off randomly but usually at least the STC light would stay on.
5) Only happened once, but the flashing orange arrow of death also started (transmission warning light).
6) Vida was getting no fault codes
7) Portable code reader was getting a P0600 communication code reading

With all these issues it was hard to figure out if there was 1 or multiple issues going on.

I checked the following:

1) All engine bad ground connections by removing, cleaning and re-fitting at both ends. The 'missing' ground wire from the top torque mount to the firewall was a red-herring issue or non-issue as apparently some cars have and some don't have this fitted and no reason given. Adding this is apparently not an issue if you feel it is worth having that added earth for security. So far not fitted it yet.

2) Checked the ABS wires to the front wheels for resistance/continuity. My basic electrical tester did not give a resistance value on resistance settings (Ohms) for some reason, but did on the continuity setting. NOTE: It would only give a reading when connected in one orientation, so if you get no reading try reversing the probes. The readings I got were no-where near those on Matty's website of 900 ohms, but I also was told the reading could be 900 +/- 300 ohms. Mine were at approx. 660 ohms so I deemed them ok and that would appear to be the case so far.

3) As I had had the speedo unit out to replace the failed illumination bulbs I removed it again and checked for no obvious burned components or tracks and re-fitted. I think the immobiliser unit connector which on my car sits on top the the speedo case may have been loose but not convinced that made any difference than making the dash top squeak more!

4) I removed and cleaned the multi-pin connector to the ABS module and cleaned the pins and connector with electrical contact cleaner and a gentle scraping with a small screw-driver. Re-fitted it and the 2 pin wiring connector from the ABS pump and still no error messages on Vida showing.

5) Swapped the ABS module for a matching unit from a PnP car. It did not fix the issue but at least the only issues that were not resolved were the ABS and STC warning lights which stayed on all the time when running. Also Vida now gave various error codes including a communications error (CDM-001) which cannot easily be switched off. Had to use Vida and a process of switching the engine on, running for 20 secs minimum at 1500RPM or higher. Switching off and then back on. The error was still there but the Vida notification on the traffic signal went from red to green. Also got ABS error messages, ABS-0092/93/95 which are all communication issues. Switched them all of with Vida, but they came back on immediately when the engine was started.

I was getting really fed up at that point, but had already decided to order the re-built unit from Matt as a back up, and when fitted all now appears to be ok. Still have to go back in and remove any remaining error messages but so far ok, but I will keep monitoring it.

Hope this helps others. I think the 99-00 models may be more electrically prone to these wonky issues due to the way they are configured. But patience (not my strong point) has hopefully overcome this problem!

Now to check the air-flow to the windshield and the front shocks for clunking. It never ends!

Thanks to all for help and encouragement!

Neil.
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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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