DRBII Diagnostic Readout Box

The DRBII is a diagnostic read-out box designed by Chrysler to gain access to the on-board diagnostics that are found on Chrysler-built cars and trucks.

- The DRBII reads the system performance information that is stored in the vehicle system controllers.
- The DRBII displays the codes that have been stored in the various system controller memories.
- The DRBII allows the Technician to run tests of computer-controlled vehicle systems.
- The DRBII, along with the test instructions in this section, leads the Technician through the diagnostic procedures.

There are diagnostic read-out boxes available from other manufacturers that can be used on Chrysler vehicles. However, the diagnostic test procedures in this section have been designed specifically for use with Chrysler's DRBII diagnostic read-out box. It is assumed that the DRBII will be used to perform the procedures in this section.

The DRBII operates by communicating with the controller for the vehicle system being tested. To communicate with the Air Bag System Diagnostic Module (ASDM), the DRBII must be connected to the ASDM diagnostic connector. See HELP 1 - Operation of the DRBII for Diagnostic Testing for instructions on connecting the DRBII to the ASDM diagnostic connector. Help 1: Operation Of The DRBII For Diagnostic Testing

To perform the diagnostic tests in this section, a program cartridge must be inserted into the DRBII. This cartridge serves a similar purpose for the DRBII as a diskette does for a personal computer. It contains the diagnostic test program. It must be inserted into the DRBII in order to perform the tests in this section.