Engine Performance (A8)Câu 108 / 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
Giải thích
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.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Technician A says low fuel pressure can cause a lean misfire and hesitation. Technician B says a clogged fuel filter or weak pump can lower fuel pressure. Who is correct?
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- A vehicle fails an emissions test for high hydrocarbons (HC). This is most commonly associated with:
- The PCM uses the crankshaft position sensor primarily to:
- The exhaust gas recirculation (EGR) system reduces which emission by lowering combustion temperature?
- A no-start with no spark and no injector pulse, but a good battery and cranking, most likely points to:
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