Engine Performance (A8)Question 108 of 120
On an OBD-II vehicle, the data link connector (DLC) used to retrieve codes is standardized as a:
a.9-pin round plug under the hood
b.2-pin connector at the battery
c.4-pin trailer connector
d.16-pin connector, usually under the dash
Explanation
OBD-II mandates a standardized 16-pin DLC, typically located under the driver's side dash, for scan-tool access. This standard allows generic tools to read codes and data across manufacturers. Certain pins carry power, ground, and communication signals.
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