Scan Tool Testing and Procedures

Refer to the DRB user's guide for instructions and assistance with reading trouble codes, erasing trouble codes, and other DRB functions.

DRBIII Error Messages
Under normal operation, the DRB will display one of only two error messages:

- User-Requested WARM Boot or User-Requested COLD Boot

If the DRB should display any other error message, record the entire display and call the scantool manufacturer for information and assistance. This is a sample of such an error message display:

ver: 2.14
date: 26 Jul93
file: key_itf.cc
date: Jul26 1993
line: 548
err. Oxi
User-Requested COLD boot

Press MORE to switch between this display and the application screen.
Press F4 when done noting information.

DRBIII Does Not Power Up (Blank Screen)
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






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