Scan Tool Testing and Procedures

ECM Data
By connecting the OBD-II scan tool to the 16P data link connector (DLC), various data can be retrieved from the ECM. The items listed in the table below conform to the SAE recommended practice.

Understanding this data will help to find the causes of intermittent failures or engine problems.

NOTE: The "operating values" given are approximate values and may be different depending on the environment and the individual car. Unless noted otherwise, "at idle speed" means idling with the engine completely warmed up, A/T in (P) or (N) position, M/T in neutral, and the A/C and all accessories turned off.