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XC90 '02–'15 General Forum for the P2-platform XC90 model |
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ABS ringsViews : 20589 Replies : 64Users Viewing This Thread : |
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Sep 4th, 2018, 22:06 | #61 |
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Last Online: Aug 30th, 2020 21:23
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Dear all
I'm fairly new to this forum (and to mechanics) - had a disastrous day today thanks to my XC90's ABS warning - and found this thread on Google. I wonder - if my car's problems are caused by ABS ring? Please could you take a moment to read details below and give me your thoughts? Any tips would be much much appreciated! For my very old 2004 XC90 T6 - I've recently replaced serpentine belt and tensioner/pulley - and for this job I removed ECM TCM modules as otherwise the tight clearance made the job literally impossible. I used a ECM/TCM removal tool and disconnected battery negative on a cold engine before the job. After the job, I reconnected battery and turned ignition to position II - did a test drive and all seemed OK. Today I had the 3rd trip after the job mentioned above - and I was stuck in really bad traffic for 45 min - I pretty much didn't use the gas pedal as could just rely in pressing/releasing the brake to move at that slow speed. Then - suddenly - ignition was playing a bit funny - it was 'auto switching' off/on itself multiple times (sorry don't know the technical language for this) - at first I thought it was due to engine being idle for too long - but then the frequency increased to once every 30 seconds also - at which time 'airbag service urgent' warning message also showed up. I continued to drive (in bad traffic) - and suddenly the 'brake failure stop safely' message came up - at which point I lost all electronics - gear light was gone, DIM was gone, and signal lights not working - but the engine was still running and I was able to accelerate / brake just like normal. However once cleared of the traffic jam I had to pull over (without being able to signal...!) to switch off and on ignition - which gave life back to all electronics - only to get the same 'brake failure stop safely' message again within a couple of minutes... Luckly when the above happened I was close to home - still had to stop / switch off/on ignition 4 times to get home - and did all this with our little baby aboard!! I remained calm and get us back home safely eventually. Some FACTS: - Starter motor, starter switch and ignition barrel was changed in Feb 2017 (by previous owner) - Brakes were serviced late last year (by a good local shop) - all working fine - I've recently disconnected ECM/TCM and reconnected them - car did two trips afterwards - both fine - The aforementioned problems started with ignition playing funny - then 'airbag' warning message - then 'brake failure' warning message - then loss of all electronics. my SUSPICION: - The car had been stuck in bad traffic before (albeit just for a few minutes - not as bad as today's) and was fine - the only thing had changed was ECM/TCM disconnection/reconnection - could I have messed up something with my amateur job? - ABS ring failure as described in this thread? Any help / advice would be greatly appreciated. Thank you in advance. Namo Amituofo |
Sep 5th, 2018, 06:05 | #62 |
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Last Online: Mar 20th, 2024 18:26
Join Date: Jan 2016
Location: Cross Country
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You may be suffering a DIM bad solder joint problem, and you can get your DIM fixed in London for a very good price, see here:
https://volvodiagnostic.com/shop/ind...duct&id_lang=1
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XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65. |
Sep 5th, 2018, 17:41 | #63 |
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Last Online: Feb 1st, 2023 11:27
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Location: Rye, East Sussex
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There are a number of electrical corrosion issues that it could be. I would advise taking it to Charlwood Volvo. http://charlwoodautomotive.com/
Peter Suchy is brilliant at diagnosing and fixing electronic faults and will probably save you money in the long run. Roy
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Sep 5th, 2018, 22:32 | #64 | |
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Last Online: Aug 30th, 2020 21:23
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Quote:
Have found this post - think the problems are very similar to what I experienced - so first and foremost will try to clean contacts in ECM/TCM - also ordered VIDA to further diagnose. |
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Sep 8th, 2018, 09:34 | #65 |
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Last Online: Aug 30th, 2020 21:23
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Here is an update - I just cleaned contacts in ECM/TCM (noticed the ECM purple plastic holding tabs have almost 'rounded' where the ECU removal tool inserts - so suspect it was removed multiple times before mytime).
Upon reconnection battery, turned key to position II - still had engine light, engine light, and ABS light on. Turned key to ignition - all these lights were out. I then drove around the neighbourhood (up to 30 mph) - no problems. What I don't know is - if the problems would recur - if so I'm almost certain can rule out ECM/TCM connector issue - as these are in top condition - no corrosion whatsoever - yet I still gave them a good cleaning today. So will drive on a bit to see if problems recur. Will follow up as and when. Many thanks all - I really appreciate it! Namo Amituofo |
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