Technical OBD fault (stilo 1.9Jtd 2005)

[stilofiat2005]

hi guys, i'm glad i found this forum maybe someone will be able to help me out with this problem; i will go straight to it:

1) i was driving my car in a very very rain day (without engine protection cover)

2) i had water on the relay/fuse box next to the engine (disassembled it and cleaned)

3) i looked everywhere (ECU, cables, ABS, a.s.o) and "seems" to be no more water damage

4) i searched for fault codes and this can't remove:
---B100E - Speedometer
---B100C - Water Temp Gauge
---C1121 - Valve Relay

one more thing: [[on that day i had to drive back home about 40km]] and the car crashed 4-5 times by itself because i had 2 short circuit on the fuse/relay box (unfortunately i don't know which lines) after that i wasn't able to start the car anymore.

i am grateful for any comments

CAR: Fiat Stilo 1.9 Jdt 2005

youtu.be/YWpu5nq-ex8

ibb.co/g7HPbtM

 

[roll]

Maybe get a new fuse box? With new relays and fuses. Big brown connector under fuses is OK?

 

[Davren]

Did you completely dismantle the fuse box, including the metal connecting plates inside it?

There's a guide here: https://www.fiatforum.com/stilo-guides/313986-how-clean-dry-out-fuse-box-near-battery.html
.

 

[stilofiat2005]

big brown connector under fuse box and the other one are very good, no water damage

i disassembled it completely and cleaned it with isopropyl alcohol.

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ABS control unit or it's electronics, or maybe both could be the problem?

 

[Davren]

A terminal in your last picture appears the have detached from the grey plastic, and is touching the terminal above it.
.

 

[flyingdutch]

Just get a new relay box this one is toast buddy, and by new i mean second hand

 

[stilofiat2005]

A terminal in your last picture appears the have detached from the grey plastic, and is touching the terminal above it.
.

don't get me wrong, i made those pictures before cleaning and assembling the box; I did this to know how to assemble the parts without losing a lot of time. i would say the fuse box isn't a problem anymore.

as i said, maybe the problem is related to ECU, ABS control unit or another electrical circuit which has to be reprogrammed or replaced, but i'm not sure, it's just a guess....

 

[stilofiat2005]

Just get a new relay box this one is toast buddy, and by new i mean second hand

i didn't tried another fuse box... i can do it and see what happens. other tips?

 

[stilofiat2005]

hi guys,
so... i tried another fuse box > same result.
i searched everywhere and i found one broken piece on the ECU motherboard. it seems to be a diode, but i can't find on the internet any data sheet about it or the whole schematic for the ECU motherboard. this piece is ED 52 GS (GS* - or at least i think so)
Could you please help me with the name of this piece or tell me where to buy it? or maybe you have the schematics for the ECU motherboard? Thanks

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