Discuss how to competently carry out diagnostics and repair of engine management systems
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Joined: Mon Jun 18, 2018 11:59 pm


Post by zap » Mon Apr 22, 2019 9:34 pm

Over the weekend, I was attempting to check primary ignition voltage on a 2002 Porsche 996 with the 3.6L engine. I was surprised that the level-over-range warning was going off with the vehicle idling. Apparently this vehicle has very high voltage on the primary side.

Does Autoscope sell attenuators with the XLR connectors built in? I know I could get attenuators from Pico and make adapters to attach to the BNC connectors, but it would be nice to have some that just plug right into the Autoscope leads.

primary voltage too high.png
primary voltage too high.png (80.04 KiB) Viewed 29339 times

Posts: 22
Joined: Sun Mar 01, 2015 10:35 pm

Re: Attenuators?

Post by Kelvin » Wed Apr 24, 2019 8:29 am

Yes, level-over-range warning is off in Ignition_Primary mode.
Because ignition primary voltage can reach as high as 400V,
and buzzer warning will be annoying during all measurement time.

We don't have attenuators with the XLR connectors. Alternatively, we can offer you to use PIN3-BNC adapter, 10:1 attenuator and BNC test leads.
In this case you should select 60 V x10 measuring range in the channel settings.
Pin3-BNC.jpg (3.93 MiB) Viewed 29332 times

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