Hi Steve,
I have upgraded the SW but the fault remains. It seems like the test does't work with 24V. The voltage signal seems to be cut at 20V when I am looking in the "Display raw data". When I only connect to one of the batteries and gets 12V and run the test it works just fine.
Frank

Hi Steve, first of all Pico is a great program. I have had a lot of help using Pico. I'm using a 4423 with sw 6.10.11.15 (the sw says no updates available) and 1.7.4 build 1. Yes the engine has a 24 voltage system. The hardware is confirmed ok. I have previously run the test on a 12 voltage system a...

Hi, I have used the relative compression test on a 6 cylinder diesel engine. Most of the times I get an error message from the test, "Could not process data due to unknown error". Only sometimes I get a valid test result. I have changes batteries, location of the probes but still most of the times t...