FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Scan Tool Error Messages and Blank Screen






NOTE: The information provided here was written for the Chrysler DRB III scan tool. This information is provided in the hope that it will aid diagnosis using other scan tools as well.

If any of the following error messages appear on the DRB screen there is a vehicle communication problem:
- Cartridge Error
- Low Battery
- Ram Test Failure
- High Battery
- Keypad Test Failure

If the DRB has a blank screen, do the following:
- Ensure there is a good body ground at cavity 6 of the data link connector.
- Ensure there is 12 volts ground at cavity 2 of the data link connector.
- Use the process of elimination: Sequentially substitute another cable, cartridge, and DRB until the condition is corrected.

DRB III Error Messages and Blank Screen
Under normal operation, the DRB will display one of only two error messages:
- User-Requested WARM Boot
- User-Requested COLD Boot

If the DRB should display any other error message, record the entire display and call the MDS Hotline, or call for information and assistance at 1-800-825-8737. This is a sample of such an error message display:

ver: 2.14
date: 26 Jul93
file: key_itf.cc
date: Jul 26 1993
line: 548
err: Ox1
User-Requested COLD Boot

Press MORE to switch between this display and the application screen.

Press F4 when done noting information.

DRB III Scan Tool:






DRB III 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 Air Bag System Trouble Code Test 3A.

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