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C30 / S40 & V50 '04-'12 / C70 '06-'13 General Forum for the P1-platform C30 / S40 / V50 / C70 models |
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Alarms V30Views : 387 Replies : 4Users Viewing This Thread : |
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Apr 5th, 2020, 20:26 | #1 |
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Last Online: Oct 19th, 2020 10:16
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Alarms V30
Good day Gentlemen
My daughters C30 SD 2009 developed an electric problem a few weeks ago, diagnosed as the ECU at fault, the alarms showing and flashing are the AntiSkid, ABS and brakes. also the wipers tend to come on erratically? I removed the ECU and sent for testing and it came back as 'no faults found'. Today, i refitted the ECU, started the car and let it run for ten minutes, all seemed ok, then I took the revs to 2200 and suddenly everything started flashing again. I took the revs a little higher then removed my foot from pedal and for a fraction the revs still increased. Once revs back to tickover the alarms disappeared. Another thing I noticed is the LCD readout, for radio etc is flickering, even at tickover, increasing revs makes no difference. My suspicion is the increased engine revs cause vibration and maybe a loose connection is causing problem. Any ideas would be welcome? Thank you in advance gentlemen |
Apr 5th, 2020, 20:36 | #2 | |
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Last Online: Jan 15th, 2024 15:32
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Quote:
There have been instances of people causing electrical damage to the wiper circuit by fitting dodgy LED bulbs, so that may be related. If you get issues as revs rise and vibration, it could be a misfire, bad plug, injector, engine mount... bad pulley and aux belt, bad alternator... impossible to diagnose on a forum. check CEM connections, check fuse box and wires (wheel well by front bumper), check car battery is good. check alternator is good. If all this is fine, doesnt help, you will need VOLVO to connect up for proper diagnostics. there are lots of modules and computers in these cars and you need a VIDA diagnostic to find out which one is the culprit |
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Apr 6th, 2020, 11:19 | #3 |
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Have to agree, sounds like the usual CEM problems.
I had very similar last year.
__________________
2006 S40 2.4 SE Auto. Ruby Red. 83K Miles Some previous cars include: Jaguar x type: Mazda 6 : Mazda 626: Ford Sierra 2.0: Toyota Celica ST 1600 : Hillman Avenger: Triumph Spitfire: Oh and a Volvo 340 GL 1984 company car from new. |
The Following User Says Thank You to MDS40 For This Useful Post: |
Apr 27th, 2020, 14:04 | #4 |
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THanks
Sorry for the late reply, your input is much appreciated, today is fault finding day (again)
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Nov 30th, 2020, 20:06 | #5 | |
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Last Online: Dec 11th, 2020 09:13
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When the engine is running the following happens, but is much worse whilst accelerating; - Electrics (radio / AC etc) flick on and off randomly - Random warning lights on the dash (ABS, Anti-skid, SRS, Battery) - "EL Current High" message I took my CEM off and cleaned the terminals but this didn't work. I've just (today) had my alternator replaced as it was overcharging at 17v, the mechanic said this needed replacing but wasn’t the cause of the issues and to expect the issues to return. He said it might be a relay or something short-circuiting, which is also killing my alternator. Maybe yours is something similar? |
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