More trouble!

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Funokata
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More trouble!

Post by Funokata » Sat Feb 25, 2023 6:12 pm

Hey again guys. If I could pick your brains again please if you don't mind!

MOT is rearing its ugly head, and I have two electrical faults I've been looking at today. Major one is that the airbags don't work. Code is 5-2 which from the table in the oracle means "SRS control module, back-up power supply failure -- wiring, SRS control module". What exactly does this mean? Is the module itself faulty internally i.e. a capacitor or similar, or is it a wiring fault to the module? Any ideas would be a great help.

Second fault is that the horn doesn't work, I've traced it through and either there's a wiring fault between relay and switches or the switches in the steering wheel are faulty. Is it possible to even get hold of these?

thanks again.

Kit
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Re: More trouble!

Post by Kit » Sat Feb 25, 2023 7:17 pm

Try changing the ‘clock spring in the steering wheel, & check the wire wiring under the dash, for the horn
(Got a clock spring here £25 post, if you need it)

Code 52 is the thermal fuse in the Blue box
Simple fix ( but I’ve never done it)

But there are people on here who have

Kit

Micron
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Re: More trouble!

Post by Micron » Sat Feb 25, 2023 7:57 pm

https://www.ukpoc.co.uk/forum/viewtopic ... d8eaae7202

This is the guide on how to replace the thermal fuse
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Funokata
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Re: More trouble!

Post by Funokata » Wed Mar 01, 2023 5:43 pm

Just received the fuse, will repair it at the weekend. Thanks again all, would've been stumped without this forum!

Funokata
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Re: More trouble!

Post by Funokata » Fri Mar 03, 2023 5:54 pm

I've replaced the thermal fuse, and its seems to have done the trick, code 52 is gone, now I have code 45. I gather it can only display one fault code at a time...wonder how many ill get!

Could anyone tell me where the centre front crash sensor is please?

cpt black
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Re: More trouble!

Post by cpt black » Fri Mar 03, 2023 5:59 pm

Underneath the plastic strip by the bonnet catch the wires run up to the connector plug
orange/blue by the wiper motor

Funokata
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Re: More trouble!

Post by Funokata » Mon Mar 13, 2023 11:18 am

Thanks mate. Had a look, dug out the diagram off the forum. I've checked through the wiring thoroughly. From the connectors at the srs module I have the correct resistance all the way through to the crash sensor as well as a good connection to earth.

Is it possible it's an internal module fault?

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Re: More trouble!

Post by cpt black » Mon Mar 13, 2023 12:02 pm

when tested my crash sensors over the weekend i got omhs of 1180 as per manual
could well be a module fault did you continuity test the module when off :?:
Last edited by cpt black on Mon Mar 13, 2023 3:13 pm, edited 1 time in total.

Funokata
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Re: More trouble!

Post by Funokata » Mon Mar 13, 2023 3:13 pm

Yeh that's the reading I got as well. I guess I'll take the module apart and check whether I damaged anything when changing the thermal fuse.

What continuity checks can I do with it off?

I'm going to assume these are pretty hard to get hold of if it is knackered?

Micron
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Re: More trouble!

Post by Micron » Mon Mar 13, 2023 3:55 pm

good replacements are hard to find
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