Meaning of each terminal of automobile diagnostic plug

Each terminal of the automobile diagnostic plug is:

16 is the positive pole of the power supply.

The horn is the ground wire.

Seven angles are data diagnosis lines, which are generally used to measure engines.

Other needle angles are data diagnosis lines for other functions of automobiles, such as ABS system, airbag system and automatic transmission system.

Extended data:

Working principle:

Manual reading and clearing of fault codes is compact and easy to carry, simple to operate and cost-effective. Suitable for car owners or drivers, special car, accurate. Connect this equipment to the diagnostic seat of the automobile computer, and the user can read or clear the faults in the automobile electronic control system by manually operating the button.

The automobile fault detector can also reset the maintenance lamp to zero. OBD-II car doctors can read the operating parameters that have important influence on the car, including: engine speed, vehicle speed, coolant temperature, intake temperature, throttle opening, battery voltage, ignition angle, oxygen sensor voltage, etc.

Operation method:

The car fault detector depends on which car series it corresponds to, and different cars correspond to different plugs. Most cars on the market are OBD2 and OBD2 plugs with CAN. Select the right plug, find the vehicle diagnosis plug (usually on the left and right sides under the steering wheel) and then enter the system. How to operate depends on the operation manual. Not every testing instrument operates the same.

Moreover, the operation displayed by the diagnostic instrument of different cars is different, so it is necessary to choose the appropriate car type and the system where the medicine will enter. Some can understand what it is intuitively, such as ABS airbag engine control system, and some are more troublesome, such as Volkswagen series, which need to remember the channel number, of course, it is also indicated in the manual.

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