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Old 05-05-18, 08:14 AM   #1
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Default BSI burnt new one not communicating

Hi gents,
my first post it is and need some advise, please, where should I check next as I have a 207 with me with a burnt/melted ecu that has been replaced (by us) with a genuine new one but via obd cant be reached (no response from controller). Like that I cant do coding to the engine ecu.
I checked the big fuses under the bsi but all okay.

Thanks for all the posts
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Old 05-05-18, 08:49 AM   #2
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You say BSI then you say ecu can you be clearer about which it is also what are you using to communicate with it can the computer talk to other parts of car finally WHY was old part burnt ?
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Old 05-05-18, 09:28 AM   #3
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Sorry about it, I meant to say the BSI burnt. Reason we don't know. It came in to us like that.
I put the car on a charger and I managed to connect the diagnostic to the bsi .
Now I have a different issue. Came on two fault codes for the starter system:
528 - Starter control circuit - coherence, permanent
9A0 - Starter relay circuit - Not recognized, permanent

As far as I know that relay is part of the bsi and I bought a new unit.
I will check the wiring to the starter and check the starter itself.
If you have other suggestions please share it with me
Thanks

Also, the customer was driving the car when she realized the smoke coming from under the bonnet, she parked up the car and after that didn't start again. Didn't even turn over.
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Old 05-05-18, 09:41 AM   #4
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BSI is INSIDE the car but you say smoke came from under bonnet starter relay is in the fusebox under bonnet.

Sounds like possibly starter relay held starter on and fried the relay.
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Old 05-05-18, 09:58 AM   #5
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Okay than it is my fault. I thought that is the bsi. Sorry again about it. But slowly we getting there
So I changed the fuse box under the bonnet. not the bsi and that is the unit which got melted. getting there, getting there...
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Old 05-05-18, 02:31 PM   #6
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Ok the computer does not talk to the fusebox anyway your faults are most likely as i said the starter ran on and burnt out the fusebox BUT chances are the starter is burnt out too !
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Old 08-05-18, 05:51 PM   #7
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Thank you for all your help!
I put a new starter and with the new underbonnet fuse-box it started perfectly.

Thank you!
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