No RPM Reading

General Topics for configuring, operating and tuning the Megajolt. Also see the <a href="http://www.autosportlabs.net/MJLJ_V4_Operation_Guide">Operation Guide</a>

Moderators: JeffC, rdoherty, stieg, brentp

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63vwbug
Posts: 7
Joined: Thu Nov 20, 2014 6:55 pm

No RPM Reading

Post by 63vwbug »

I am not receiving any readings on my lap top.

The message I'm getting is "Timeout reading cylinder count"

I've checked the voltage reading EDIS pin 1 and had 12 volts. I had almost 6 volts at the PIP input with the engine running.

I am receiving rpm reading on my tach from the "tach output" pin.

What should I be checking next?

brentp
Site Admin
Posts: 6274
Joined: Wed Jan 24, 2007 6:36 am

Post by brentp »

Hi,

it looks llike your computer is not able to talk to the Megajolt system over the serial / usb cable. So, verifying basic connectivity is the first step.

Before you're going to be able to watch the RPM live on the screen, you need to verify you can communicate with the system. Please review the connectivity steps here to ensure you have a properly configured serial port and that it is set correctly in the Megajolt software:

http://autosportlabs.net/MJLJ_V4_Operat ... erial_Port

Please let us know what you find out!
Brent Picasso
CEO and Founder, Autosport Labs
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63vwbug
Posts: 7
Joined: Thu Nov 20, 2014 6:55 pm

Post by 63vwbug »

UPDATE:
I ordered a new tuning cable and all is well. My old one must have a break in it some where.

Thanks for your help.

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