Scan Tool Testing and Procedures

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 (data link connector cavity 16). A minimum of 11 volts is required to adequately power the DRB.

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

Perform Vehicle Communication TEST 1A. Test 1A

Display is Not Visible
Low temperatures may affect the visibility of the display. Adjust the contrast to compensate for this condition.