The TTS Datamaster self-powered ALDL interface adapter has been professionally designed and constructed using surface mount technology and the highest quality commercial components. Unique to this design is the use of the ISO 9141 interface chip, which allows matching voltage levels perfectly to the GM XDE-5024B ALDL specification.The input and output circuitry is ESD protected, and the assembly is mounted in a rugged hard-plastic shell, assuring a long service life. Custom versions are available to meet any special vehicle requirments, contact TTS for details.

The TTS ALDL adapter cables are precision injection-molded construction to withstand the rigors of shop use.

OBD II Cable & Adapter $100.00
OBD II Cable & Adapter Version Late Model $100.00

Some 1994 & 1995 vehicles are OBD I computers with OBD II connections. The TTS OBD II cable is compatible with these systems.

TTS Free Software Utility The following utilities and programs are supplied free of charge with no support or guarantees whatsoever! Have fun! ALDL_TEST Version 221 Download Files: This utility is used to test that the TTS OBD I ALDL adapter is working correctly. The adapter is connected to a serial or USB COM port only (no PCM attached), and the test proceeds to check all combinations of handshake power and applicable baud rates up to 115K. If this test is successful, the adapter is working correctly. Version 221 adds 8192 baud speed testing to help weed out incompatible USB interfaces. ALDL_TEST - Complete Installation (5.4MB) NOTE: ALDL_TEST does NOT test the cable from the adapter to the PCM; DataMaster must be installed and the "Test Com" command executed from the Data Acquisition screen to check the complete connection to a PCM.