My fixd scanner only says low voltage. How can I increase the volts at OBD connection my check engine light is on trying to get code.
1999 GMC Sierra 2500 with a 5.3 litre Vortec engine
Scanner works on my other vehicle.
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Sign up to join this communityMy fixd scanner only says low voltage. How can I increase the volts at OBD connection my check engine light is on trying to get code.
1999 GMC Sierra 2500 with a 5.3 litre Vortec engine
Scanner works on my other vehicle.
Make sure you have battery voltage on pin 16, and ground at 4. If you have voltage, probably have scanner problems.
Check for corrosion or discolored pins on the tester and receptacle. Your tester could have bad connection internally causing it to “see” a low voltage from your vehicle. If you have a multimeter check for the correct voltage at the test receptacle. If that’s not where it should be, I would trace the wiring looking for a resistance (ie, corrosion or loose connection) that shouldn’t be there. You may have pinched a wire when you installed the new engine. I hope this helps, Good luck!
I have 35 years experience doing electrical and avionics work on military jet aircraft to base my thoughts on.