Help 4, DRBII/Scan Tool

Purpose

The DRB-II is a diagnostic read-out box (scan tool), designed by Chrysler to gain access to the on-board diagnostics that are found on Chrysler-built cars and trucks.

DRBII:

- Reads the system performance information stored in the vehicle system controllers.

- Displays the fault codes stored in the various system controller memories.

- Allows the Technician to run tests of computer-controlled vehicle systems.

- Leads the Technician through the diagnostic procedures, along with the instructions for the tests.

Note: All test procedures assume that Chrysler's DRB II diagnostic read-out box is being used, it should be possible to apply the same test procedures using an equivalent scan tool.

OPERATION

The DRB-II operates by communicating with the controller for the vehicle system being tested, through the CCD Bus (body diagnostic connector).

To perform the diagnostic tests using a scan tool:

- Insert the proper cartridge into the scan tool.

- Plug the correct adapter cable into the diagnostic connector and attach the power supply cable to the positive terminal of the battery.

Note: For more information, SEE Powertrain Management/ Computers and Control Systems/ Testing and Inspection/ Procedures. .