[mike85gn]

I seem to be having an issue with my Scanmaster, I hooked it up to my friends car and when we go key on, it lights up for a second, shows "21" then the display goes blank. We've verified the wiring and we know we have good power and ground, showing a solid 13.3 volts, and the unit was working last season on my own car. I'm not sure if the "21" represents the software version of the Scanmaster (2.1), or if it has detected code 21 - TPS too high.

Has anyone else had this problem before? I thought if the Scanmaster detected a code, it would display it and then start working normally regardless. Is it a code that needs to be cleared?

My next steps were to check TPS voltage, clear the MALF codes, and then try again.

Any other ideas?