Andypscutt Posted January 28 Share Posted January 28 Hi all , new member here , joined in October after purchasing a 310s , fantastic machines aren’t they !! Just a bit of help if possible , went to start up yesterday but of course it won’t , doesn’t click when transponder held up to steering column , tried both keys and transponders no change , battery at 12.7v just been charge with a c tech . so no dash readout or fuel pump prime / any ideas other than immobiliser, just one more thing I have a plug under the dash hanging down , 4 pin with three wires black. Green. And a grey wire thanks all in advance Andy Link to comment Share on other sites More sharing options...
colindavies56 Posted January 28 Share Posted January 28 YouTube have a video by turn7 on check, set,and reset the immobiliser just incase your doing something wrong. Do you have a red isolation key. Link to comment Share on other sites More sharing options...
Andypscutt Posted January 28 Author Share Posted January 28 Thanks for the reply ! Yes I’ve used both keys and fobs no different, battery disconnected right now to try a reset but normally there is an audible click and the led goes off but this isn’t happening, I’m driving myself mad with this plug hanging down seems to obvious but maybe it’s part of a generic loom for all models . i heave viewed the turn 7 video but no improvement just yet thanks again Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted January 28 Member Share Posted January 28 Welcome If you'd like the appropriate wiring diagram and layout of fuses and relays please send me a Private Message with your email address. Has it been working normally before this, and has there been any recent work on it? Immobiliser, as above. If you add a photo of the fob we can work out which sort, and what might be wrong. Does the voltage across the battery change when you ask it to start? Do you have another vehicle or battery that you could use to jump start? Try wiggling the key in the lock/switch. And do other ignition-switched circuits work? Check wires and connections on battery and starter, including engine earths. Jonathan Link to comment Share on other sites More sharing options...
StevehS3 Posted January 28 Share Posted January 28 The fuel pump still primes if the immobiliser is unset on my 310, so maybe that can be eliminated? Link to comment Share on other sites More sharing options...
StevehS3 Posted January 28 Share Posted January 28 A couple of things to check: Reset the inertia switch Have you removed the battery and missed off reconnecting one of the leads? 1 Link to comment Share on other sites More sharing options...
Andypscutt Posted January 28 Author Share Posted January 28 Thanks guys Yes I can get it to crank over no problems , battery is good at 12.7v all fuses ok , no work at all just topped battery up with C Tech MX5 conditioner , I was out in it Jan 7th no problems , only thing since is a friend sat in it , I remember thinking at the time his foot brushed under the dash / like I said this plug hanging down may be a red herring but I would like to know what it does if anyone knows or a fellow owner wouldn’t mind peeking under their dash to see if it matches really appreciate all the help Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted January 28 Member Share Posted January 28 7 minutes ago, StevehS3 said: The fuel pump still primes if the immobiliser is unset on my 310, so maybe that can be eliminated? That's very useful to know in the process of diagnosis. See comment above about other ignition-switched comments: why isn't it making a noise? (Andrew Revill showed this for K series engines, but I didn't know for Sigmas.) Jonathan Link to comment Share on other sites More sharing options...
Andypscutt Posted January 28 Author Share Posted January 28 It normally clicks when the immobiliser is activated and runs the fuel pump , it’s not doing that now and the led is staying solid red not switching off Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted January 28 Member Share Posted January 28 1 minute ago, Andypscutt said: Yes I can get it to crank over no problems , battery is good at 12.7v all fuses ok , no work at all just topped battery up with C Tech MX5 conditioner , I was out in it Jan 7th no problems , only thing since is a friend sat in it , I remember thinking at the time his foot brushed under the dash / like I said this plug hanging down may be a red herring but I would like to know what it does if anyone knows or a fellow owner wouldn’t mind peeking under their dash to see if it matches I'm confused: is it now cranking but not not firing? Jonathan Link to comment Share on other sites More sharing options...
Andypscutt Posted January 28 Author Share Posted January 28 11 minutes ago, StevehS3 said: The fuel pump still primes if the immobiliser is unset on my 310, so maybe that can be eliminated? Mmm interesting? If I disconnect the battery and re connect it runs the fuel pump Link to comment Share on other sites More sharing options...
Andypscutt Posted January 28 Author Share Posted January 28 Just now, Jonathan Kay said: I'm confused: is it now cranking but not not firing? Jonathan Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted January 28 Member Share Posted January 28 1 minute ago, Andypscutt said: It normally clicks when the immobiliser is activated and runs the fuel pump , it’s not doing that now and the led is staying solid red not switching off Photo of immobiliser fob, please. Once we've identified the type we can work out what might be wrong and run through the reset procedure. Jonathan Link to comment Share on other sites More sharing options...
Andypscutt Posted January 28 Author Share Posted January 28 Yes It spins the starter no problem but no dash lights / display / fuel pump speedo rev counter nothing else / sorry if I’m confusing everyone! Link to comment Share on other sites More sharing options...
Andypscutt Posted January 28 Author Share Posted January 28 Just now, Jonathan Kay said: Photo of immobiliser fob, please. Once we've identified the type we can work out what might be wrong and run through the reset procedure. Jonathan It’s a Sterling excel Link to comment Share on other sites More sharing options...
Andypscutt Posted January 28 Author Share Posted January 28 Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted January 28 Member Share Posted January 28 (edited) 3 minutes ago, Andypscutt said: Yes It spins the starter no problem but no dash lights / display / fuel pump speedo rev counter nothing else / sorry if I’m confusing everyone! Thanks. We're getting close! : - ) What's the voltage across the battery as the starter spins the engine? Jonathan Edited January 28 by Jonathan Kay Link to comment Share on other sites More sharing options...
StevehS3 Posted January 28 Share Posted January 28 The red LED on the dash indicates if the immobiliser set or unset. 1 Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted January 28 Member Share Posted January 28 Thanks for the photo of the fob. For the Sterling Excel/Toad I have the User Guide, specification, and some correspondence with Caterham about reprogramming. Jonathan Link to comment Share on other sites More sharing options...
Andypscutt Posted January 28 Author Share Posted January 28 Thanks Jonathan just been out for a anti stress run , so I will check when it’s cranking Link to comment Share on other sites More sharing options...
Andypscutt Posted January 28 Author Share Posted January 28 10.7volts when cranking over which seems ok , cranks fast Link to comment Share on other sites More sharing options...
Andypscutt Posted January 28 Author Share Posted January 28 1 hour ago, StevehS3 said: The red LED on the dash indicates if the immobiliser set or unset. Thanks Steve , so you have this option unconnected plug in your 310 loom as photo above ? Thanks Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted January 28 Member Share Posted January 28 1 hour ago, Andypscutt said: 10.7volts when cranking over which seems ok , cranks fast Yes. The threshold value for electronics dropping out seems to be about 10.5 V. I don't think that this is the problem but if it's the sort of battery where you can check fluid level in the cells then I would. Jonathan 1 Link to comment Share on other sites More sharing options...
StevehS3 Posted January 28 Share Posted January 28 3 hours ago, Andypscutt said: Thanks Steve , so you have this option unconnected plug in your 310 loom as photo above ? Thanks There certainly are unused connectors under there. I will have a look later today. Link to comment Share on other sites More sharing options...
John Vine Posted January 28 Share Posted January 28 5 hours ago, Andypscutt said: Thanks guys Yes I can get it to crank over no problems , battery is good at 12.7v all fuses ok , no work at all just topped battery up with C Tech MX5 conditioner , I was out in it Jan 7th no problems , only thing since is a friend sat in it , I remember thinking at the time his foot brushed under the dash / like I said this plug hanging down may be a red herring but I would like to know what it does if anyone knows or a fellow owner wouldn’t mind peeking under their dash to see if it matches really appreciate all the help I think your friend may have inadvertently disconnected something. Items that spring to mind would be relays, fuses and connectors. Make sure all your relays and fuses are fully inserted. Also check the spade connectors on the back of the ignition switch. I don't know what your dangling connector is for. It's a 4-way female econoseal, so (if it's used) there should be a matching male one lurking somewhere. I've scoured the Sigma main-harness wiring diagram (2015 vintage so may now be out of date), but the only 4-ways I can see are for the tail lights. JV Link to comment Share on other sites More sharing options...
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