Hello all and many thanks in advance for any help you can offer. I have a lovely fiat 500 for my home care work, she's great and works fine. Last year I bought an Adria fiat ducato 2007 to escape when I not be working. Earlier this year, the battery light came on, but I sort of ignored it as all seemed fine, however on my last trip away, the batter stopped charging and I had a nightmare of a journey home, involving jump leads to the leisure battery before buying a new battery to get me back home. Figured it was probably the alternator, but am not sure as when husband and I got the darn thing off, we noticed that although there was 12 volts coming from battery there was only 10 volts going to alternator hookup. This doesn't seem very normal, but maybe it is and once I get a new alternator all will work fine or maybe its because there is some horrid problem with the ECU. Have looked everywhere in search of answers as to what the voltage should be at the alternator connection point, but to no avail. Did a home test on the removed alternator which did seem to work, but maybe there still be a diode issue somewhere. Any help gratefully recieved
battery light issues
- Thread starter confuszd
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battery light issues
Hello,
The x250 is known for having at least two types of grounding problems: the grounding points on the body that rust and the grounding cables rotting in the inside.
With the engine running, the charging voltage in the system should be around 14,4 V. 12,8 V is the nominal voltage of a typical car / van lead acid battery.
Have you checked for errors on MES? It's a great help with diagnosing the van.
For the rotting cables, replacing them with good quality copper cables (I'm using welding cables) + adding a second one is a solution.
For the rusted earth points, I'd check, clean and if the area ih heavily rusted find another screw on the cab to connect the cables to.
Here's the diagram of the grounding points location on the x250:
and the description:
A001: battery ground
C002: battery ground on the engine
C003: battery ground on the body
C010: front left ground
C012: ABS front ground
C015: driver's side instruments' panel ground
C016: A/C ground
C022: center instruments' panel ground
C030: rear left ground
C031: rear right ground
C045: fan ground
C050: airbag ground
C098: right doorstep ground
C099: optionnal: cab ground
C100: optionnal: cab ground
C101: cab's double ground
C102: rear axle ground
The x250 is known for having at least two types of grounding problems: the grounding points on the body that rust and the grounding cables rotting in the inside.
With the engine running, the charging voltage in the system should be around 14,4 V. 12,8 V is the nominal voltage of a typical car / van lead acid battery.
Have you checked for errors on MES? It's a great help with diagnosing the van.
For the rotting cables, replacing them with good quality copper cables (I'm using welding cables) + adding a second one is a solution.
For the rusted earth points, I'd check, clean and if the area ih heavily rusted find another screw on the cab to connect the cables to.
Here's the diagram of the grounding points location on the x250:
and the description:
A001: battery ground
C002: battery ground on the engine
C003: battery ground on the body
C010: front left ground
C012: ABS front ground
C015: driver's side instruments' panel ground
C016: A/C ground
C022: center instruments' panel ground
C030: rear left ground
C031: rear right ground
C045: fan ground
C050: airbag ground
C098: right doorstep ground
C099: optionnal: cab ground
C100: optionnal: cab ground
C101: cab's double ground
C102: rear axle ground
Many thanks, did check the earth under bonnet, which was fine, will now isolate and check all other earths. Have new alternator on order anyway. If after all this situation still persists will look at MES.
Your earth diagram was wonderful, am super grateful.
This is my first forum joining experience and it's a revelation. What a wonderful community. A big hello from france
