DRBIII Does Not Power Up

DRBIII DOES NOT POWER UP
If the LED's do not light or no sound is emitted at start up, check for loose cable connections or a bad cable. Check the vehicle battery voltage and grounds to Data Link connector. A minimum of 11 volts is required to adequately power the DRBIII.

If all connections are proper, and the vehicle battery is fully charged, an inoperative DRBIII may be the result of faulty cable or vehicle wiring.