hairymel Posted February 19, 2017 Share Posted February 19, 2017 i have had a 1999/2000 mk5 1.6 fiesta sitting outside my workshop for 2 years waiting for me to take it for an mot. this i have finally done and sadly it has failed on several issues. the only one i am having trouble with is the srs light being on (dimly) the dimness has been sorted by disassembling the dash and removing the sticky tape over the srs led however this has just made the on-ness of the warning light more apparent. i have a £20 autel obd scanner which shows no codes present and a pc based f-super lead and formidable 2.02 which doesn't appear to be able to connect to the ecu on the fiesta. i have done the unplugging/replugging of all the connectors i can see and also swapped out the airbag and clockspring for ones of unknown provenance. any ideas of a cost effective method of reading the airbag ecu or any ideas of common faults that i can test for? thanks for reading Link to comment Share on other sites More sharing options...
twosmoke300 Posted February 19, 2017 Share Posted February 19, 2017 Thicker tape or a 1/8 drill bit through the led ? 😀 Link to comment Share on other sites More sharing options...
Kiltox Posted February 19, 2017 Share Posted February 19, 2017 Know anyone with a Delphi DS150? Knock offs widely available from China for £50 or so...... Never had it fail to read anything like that Link to comment Share on other sites More sharing options...
greengartside Posted February 19, 2017 Share Posted February 19, 2017 Have you tried doing a hard reset on it? As it's been stood for so long the electrics may have gone a bit do-lally? Link to comment Share on other sites More sharing options...
CortinaDave Posted February 19, 2017 Share Posted February 19, 2017 I said in another thread.. Bulb out. No bulb is an advisory against light on which is a fail egg 1 Link to comment Share on other sites More sharing options...
hairymel Posted February 19, 2017 Author Share Posted February 19, 2017 Thicker tape or a 1/8 drill bit through the led ? dont really want to fudge it if i can avoid it! Know anyone with a Delphi DS150? Knock offs widely available from China for £50 or so...... Never had it fail to read anything like that will have to be uk if i get one - the retest clock is ticking Have you tried doing a hard reset on it? As it's been stood for so long the electrics may have gone a bit do-lally? the battery has been off but the taped over light suggests a long term problem Link to comment Share on other sites More sharing options...
hairymel Posted February 19, 2017 Author Share Posted February 19, 2017 I said in another thread.. Bulb out. No bulb is an advisory against light on which is a fail the tester has been passing disreputable cars for me for years. blanking the bulb after it has failed would probably make him less reasonable in the future also nuns and kittens may be involved Link to comment Share on other sites More sharing options...
Isaac Hunt Posted February 19, 2017 Share Posted February 19, 2017 I'm a bit 'armchair mechunic' on Air Bag faults. Fused resistors for 'fooling' the Air back circuit can be found on e-bay. I 'read up' on a theory which was to fit a resistor into each plug on the circuit. Drivers Air Back, Pass Air Bag etc etc, seat connectors. Then if the light is extinguished, remove resistors and reconect each circuit 'one by one' until the light doesn't extinguish. All made logical sense and might have worked for me if I had seen it through, but I ended up with some component substitution and a re-make of connections. hairymel 1 Link to comment Share on other sites More sharing options...
hairymel Posted February 19, 2017 Author Share Posted February 19, 2017 just ordered one of these http://www.ebay.co.uk/itm/282364482974 so am either going to fix the problem before it is delivered or not fix it and the obd scanner will arrive brokenplace bets now Link to comment Share on other sites More sharing options...
Guest bangerfan101 Posted February 19, 2017 Share Posted February 19, 2017 Wd40 the yellow plug connectors under the seat. I had same on mine. hairymel 1 Link to comment Share on other sites More sharing options...
hairymel Posted February 19, 2017 Author Share Posted February 19, 2017 Wd40 everywhere my favourite thing. it doesn't always fix the problem but it smells so nice i possibly have a non tensioner equipped fiesta outside so might swap out the srs box from that. or chop all the wires and twist the ends together Link to comment Share on other sites More sharing options...
Guest bangerfan101 Posted February 19, 2017 Share Posted February 19, 2017 I think the connectors go to the seat belt pre tensioners. If so give them a wiggle and poke after a lubing of Wd40 Link to comment Share on other sites More sharing options...
hairymel Posted February 19, 2017 Author Share Posted February 19, 2017 yep - already got ya mate i will update on any progress tomorrow Link to comment Share on other sites More sharing options...
hairymel Posted February 21, 2017 Author Share Posted February 21, 2017 okydoky - multimetering across the seatbelt connectors showed 1ohm-ish resistance but so did touching the probes together, so i am assuming my test leads have suddenly become 1ohm resistors:? further fiddling and mooching about in my workshop unearthed another srs(and integral crash sensor i think) module. swapping it turned off the srs light - yay after refitting the dash, clockspring, wheel and airbag the light came on again moving around the dangling srs box seemed to be they key and happily it didn't take long for me to twig that the module needs to be earthed through its metal case, so bolting it down =light off = again after putting everything back together i noticed the revcounter was not working sigh - airbag, wheel ,dash etc apart again. the dials have pins that are a push fit into the main pcb of the dash but all seemed ok there. the needle of the revcounter was all the way round to the stop, and a gentle prod back to 0 seems to have sorted it all back together now thankfully so in conclusion - either the srs brain was faulty, or the seatbelt circuit is duff somehow and i have fitted a 'non tensioner' module. either way i am calling it fixed just ordered one of these http://www.ebay.co.uk/itm/282364482974 so am either going to fix the problem before it is delivered or not fix it and the obd scanner will arrive brokenplace bets nowoption a comes in first place!, now whats the betting option b rears its ugly head with the £65 thing i don't need now DeeJay 1 Link to comment Share on other sites More sharing options...
twosmoke300 Posted February 21, 2017 Share Posted February 21, 2017 Don't go probing airbag stuff with a multimeter ! The 9v battery it uses for resistance testing can be enough to deploy an airbag 0ldCh0d and hairymel 2 Link to comment Share on other sites More sharing options...
hairymel Posted February 21, 2017 Author Share Posted February 21, 2017 deploy an airbag in your faceoops - luckily it didn't have had a seatbelt tensioner go bang while i was removing it once though - proper $hit me up fair point - that you could have made before i took my life in my hands DeeJay 1 Link to comment Share on other sites More sharing options...
Guest bangerfan101 Posted February 21, 2017 Share Posted February 21, 2017 Top bodging Link to comment Share on other sites More sharing options...
twosmoke300 Posted February 21, 2017 Share Posted February 21, 2017 oops - luckily it didn't have had a seatbelt tensioner go bang while i was removing it once though - proper $hit me up fair point - that you could have made before i took my life in my hands Didn't think anyone was silly enough to do it 😳 Link to comment Share on other sites More sharing options...
hairymel Posted February 21, 2017 Author Share Posted February 21, 2017 now that just puts me in my place doesn't it in an alternate universe someone less fortunate - DeeJay and 0ldCh0d 2 Link to comment Share on other sites More sharing options...
hairymel Posted February 21, 2017 Author Share Posted February 21, 2017 0ldCh0d 1 Link to comment Share on other sites More sharing options...
hairymel Posted February 21, 2017 Author Share Posted February 21, 2017 0ldCh0d 1 Link to comment Share on other sites More sharing options...
0ldCh0d Posted February 22, 2017 Share Posted February 22, 2017 Ouch!!!....that last video . Link to comment Share on other sites More sharing options...
hairymel Posted February 25, 2017 Author Share Posted February 25, 2017 just ordered one of these http://www.ebay.co.uk/itm/282364482974 so am either going to fix the problem before it is delivered or not fix it and the obd scanner will arrive broken place bets nowoption a comes in first place!, now whats the betting option b rears its ugly head with the £65 thing i don't need now interface has arrived but the software disc is blank lol new one being sent by the vendor so hopefully all will be well in the end. also the fiesta , after srs repair , 2 new brake lines , a backbox wobbing and 3! new wiper blades has now got a mot certificate for the first time in 2 years Link to comment Share on other sites More sharing options...
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