Using DRB

WARNING: This page is about a different car, the 1995 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Although other scan testers are available, manufacturer recommends using Diagnostic Readout Box (DRB) to diagnose system.

WARNING: DO NOT probe connector with an ohmmeter unless specifically instructed in testing procedure. There is a possibility of air bag deployment.

Ensure DRB is connected to CCD data link connector, located behind dash on right side of steering column. See Figure . Ensure correct cartridge is installed in DRB for vehicle and system being diagnosed. Menu selections will vary depending on vehicle and system being diagnosed. Follow DRB screen prompts to actuate, adjust, monitor, reset, test and diagnose system as necessary.

DRB is grounded through CCD data link connector, only one volt-ohmmeter test lead is required when using volt-ohmmeter option. DRB volt-ohmmeter should only be used when self-diagnostic tests require the use of this option.

If DRB has a blank screen, ensure CCD data link connector terminal No. 6 is grounded and that there is voltage at terminal No. 2. A RAM TEST FAILURE, CARTRIDGE ERROR, KEY PAD TEST FAILURE or LOW BATTERY or HIGH BATTERY display, indicates a DRB failure. Using a process of elimination, replace cable, cartridge, and DRB until failure is corrected.