[Ruster82]

I have just got INPA to work and I am getting the below readings making me think I have a faulty alternator. The Battery in the car is a 90AH AGM and using NCS I can see the car is coded for a 90AH AGM so that is correct.

First image is with the engine running and the second image is engine off. The voltage is excessive but I don't know what PWG readings are

Can anyone shed some light on this reading please? Is it just an alternator fault or could it be something else?

[Ruster82]

Just to add it shows it is over charging by 2AH, should I try coding a slightly lower AH battery to the car? (Excuse what looks like poor editing in the photo, it is from a translation app on my phone)

[Andystobbs]

What is the fault code?

[Ruster82]

No fault codes shown on INPA.

The reason I was checking is because I get an intermittent "increased battery discharge" warning on the dash. I think using the dash menu it said "CC-415"

With a multimeter the alternator is charging at around 14.5V

[Andystobbs]

Thats usually a duff battery.
14.5v is ok, if a little low infact. Quite common to see low 15's on a vehicle with an AGM battery.

INPA is showing an alert because the scale is badly labled. The range is V but the numeral displays mV so its always going to be well over the maximum, by a factor of 1000 times.

[Ruster82]

Makes sense, thank you.

Any idea what PWG meaning is? I assume that is out due to scaling too but would be interested to know what it is

[Andystobbs]

Its short german for the german of throttle pedal position.

[Ruster82]

Thank you Andy

[marvinstockman]

Get something like the below, and you can monitor from cig lighter:

https://www.amazon.com/Jebsens-Charg...xpY2s9dHJ1ZQ==