For 1990-2009 cars

The following data lines may be accessed by a scan tool:

• | The electronic brake control module (EBCM), if equipped

• | The sensing and diagnostic module (SDM)

The EBCM and the SDM are accessed through the PPL wire at the data link connector (DLC-OBD II) at cavity 9. The powertrain control module (PCM) is accessed through the PPL/WHT wire at the DLC-OBD II at cavity 7.

These communication lines monitor the module for diagnostic purposes and in order to inspect for diagnostic trouble codes (DTCs).