What Are The Pins On An OBD2 Connector?

OBD2 Connector Pinout Configuration

What pin is power on a OBD2 port?

OBD-II Pin Configurations and Protocols

Pin 16 supplies power and is connected to the battery of the car. Pins 4 and 5 are connected to ground. Pins 6 and 14 are connected to CAN Bus High and CAN Bus Low signals respectively. Pins 2 and 10 use the SAE J1850 protocol, pin 2 for positive and pin 10 for negative.

What are the 10 OBD modes?

OBD Modes

  • Mode $01 – Request Live Data.
  • Mode $02 – Request Freeze Frames.
  • Mode $03 – Request Stored Trouble Codes.
  • Mode $04 – Clear/Reset Stored Emissions Related Data.
  • Mode $05 – Request Oxygen Sensors Test Results.
  • Mode $06 – Request On-Board System Tests Results.
  • Mode $07 – Request Pending Trouble Codes.
  • How do I get power from OBD? (video)


    How many pins is OBD1?

    Description: This product is a brand new cable of fault diagnostic tool. It is used for GM vehicles and its GM 12 pins allows you to connect a GM vehicle with a OBD1 12 pins socket with your existing OBD2 16 pins tool.

    How do you wire a OBD2 connector? (video)


    What is K-Line in automotive?

    The K-Line is a very low-speed single-wire serial communication system used on many motor vehicles and commercial vehicles. It is commonly used for the diagnostic connections between the Electronic Control Modules (ECMs) on the vehicle and the diagnostic equipment (scan tools and data loggers).

    Are all OBD2 connectors the same?

    All OBD-II pinouts use the same connector, but different pins are used with the exception of pin 4 (battery ground) and pin 16 (battery positive).

    How many OBD2 protocols are there?

    OBD-II Protocols

    An OBD2 compliant vehicle can use any of the five communication protocols: SAE J1850 PWM, SAE J1850 VPW, ISO9141-2, ISO14230-4 (KWP2000), and since 2003 also ISO 15765-4/SAE J2480. ELM-USB and OBDTester support all of them.

    What is Code $0 A?

    Mode $0A—Request emissions-related diagnostic trouble codes with permanent status after a clear/reset emission-related diagnostic information service. The purpose of mode $0A, referred to as Mode 10, is to allow a scan tool to obtain DTCs that are stored as “permanent codes.” These are codes only the module can clear.

    What are permanent codes?

    Permanent codes are a special type introduced more recently which can not be cleared using a scan tool. If you have a permanent code the vehicle will clear it itself once the cause has been addressed and sufficient data has been gathered by driving under different conditions (idling, stop and go, highway)

    What are TID and CID codes?

    “TID” stands for “test identification” and “CID” stands for “component identification”; CAN vehicles use MID (monitor ID) and TID (test ID). The number values are “computer” values and mean nothing to me as a tech. In this example, the hexadecimal values have already been converted to decimal values.

    Is OBD port always powered?

    So yes, the OBD port’s power pin (battery positive 16): MUST be unswitched (always connected to battery power) MUST be able to handle 4.0A (much more than any dashcam will use)

    Does OBD2 port have constant power?

    The Constant Power Cable will plug into a vehicle’s OBD-II port to provide constant power to up to two compatible Garmin Dash Cams. This will provide power to the Garmin Dash Cams even when the vehicle is parked and turned off. See the image below for an example of what the OBD-II port looks like.

    Does the OBD port have power when the car is off?

    The connector will always have power on these two pins regardless of the key position, and when you plug a device into the port it will have power and may come on by itself (many scanners do this). However, this is only power and you won’t be able to communicate with the car.

    Can you tune OBD1?

    It is possible to tune your OBD1 car. It needs only be used to trick the ecu by inserting a piggy back in as part of the trick. It can’t be done just by plugging in your laptop to the obd1 port and Flashing the ecu.

    Can I use OBD2 on OBD1?

    It is not possible for an OBD2 scanner to readily read codes from an OBD1 scanner because they use different technology. However, with the use of an emulator, it is possible to use an OBD2 scanner as a code reader for data from an OBD1 scanner.

    How can you tell the difference between OBD1 and OBD2?

    1. OBD1 is connected to the console of a car, while OBD2 is remotely connected to the vehicle. 2. OBD1 was used during the earlier years of the car manufacturing industry, while OBD2 was only introduced in car models produced in the early 1990’s.

    Can you split obd2?

    The OBD-II port can’t be split or have a hub like USB. It’s just not designed for that sort of thing. The OBD-II system was originally designed for mechanics to connect to a car’s computer, and nothing else.

    How do you replace a obd2 connector? (video)


    What is J1850 bus?

    The SAE J1850 bus bus is used for diagnostics and data sharing applications in vehicles. The J1850 bus takes two forms; A 41.6Kbps Pulse Width Modulated (PWM) two wire differential approach, or a 10.4Kbps Variable Pulse Width (VPW) single wire approach.

    What voltage should K-Line be?

    K line signal voltage is 1V or so lower than battery voltage, Eg, if battery 12V, then signal voltage is about 11V, battery 24V; if battery 24V, then signal voltage is about 23V.

    What is K-Line in ECU?

    K-Line is a bidirectional line. It is used during initialization to convey address information from the diagnostic tester to vehicle ECUs, simultaneously with the line-L.

    What is the difference between CAN bus and K-Line?

    K-line is the network for diagnosis, and what scanners (diagnostic computers) use to interface with the various computers and modules on the car. While a CAN network is what the car’s various computers and modules use to communicate with each other.

    What is difference between OBD and OBD2?

    OBD2 refers to the second generation of the onboard diagnostic system. OBD or onboard diagnostics is the system in a car that controls and monitors all the important control devices, offering data access with the appropriate hardware and software.

    What is the difference between a Type A and Type B OBD-II DTC?

    OBD2 connector – type A vs.

    Typically, type A will be found in cars, while type B is common in medium and heavy duty vehicles. As evident from the illustration, the two types share similar OBD2 pinouts, but provide two different power supply outputs (12V for type A and 24V for type B).

    Is it OK to leave OBD2 plugged in?

    It’s completely safe to leave an OBD2 scanner tool plugged in while driving. In fact, it’s important to have your car running while you diagnose an engine code to avoid damaging the scanning software.

    What protocol does OBD use?

    An OBD-II compliant vehicle can use any of the five communication protocols: J1850 PWM, J1850 VPW, ISO9141-2, ISO14230-4 (also known as Keyword Protocol 2000), and more recently, ISO15765-4/SAE J2480 (a “flavor” of CAN).

    How do I program OBD2? (video)


    How do I read OBD live data? (video)


    What does DTC 01 mean?

    DTC 01 General Sensor Fault.

    What is Iupr in OBD?

    IUPR are counters which display how often OBD monitors are triggered in real driving conditions compared to a standard homologation cycle. These are required for the most of the OBD monitored systems (exhaust catalysts, oxygen sensors, exhaust gas recirculation (EGR), secondary air, etc.).

    What is Mode 6 on a scanner?

    Mode 6 is defined as test results and other component/system monitoring. The vehicle runs self tests on its various systems and components to determine everything is running within the operational standard.

    Can you erase permanent codes?

    The only way to clear a PDTC is to fix the underlying problem with the vehicle that originally caused the PDTC and its corresponding DTC to set, and then allow the vehicle sufficient drive time to re-run the monitor that identified the problem in the first place.

    What does MIL mean on a code reader?

    The check engine light, often referred to as the Malfunction Indicator Lamp or MIL, allows the PCM to alert the driver that an emissions related problem has occurred or is currently occurring. The check engine light is located on the dashboard panel and is colored red or yellow.

    Can you tell if a code has been cleared on a car?

    When codes are cleared all vehicle emissions tests are reset and will display a status of ‘not complete’. In order to update the test status the vehicle must be driven under different conditions (town, highway, etc) so that the ECM may gather sufficient data to determine whether the tests have passed or failed.

    What is SAE J1979?

    SAE J1979/ISO 15031-5 specifies diagnostic services and functionally addressed request/response messages required to be supported by motor vehicles and external test equipment for diagnostic purposes which pertain to motor vehicle emission-related data.

    What is TID in obd2?

    The Test ID (TID) tells us what specific test is being run. The Test Value is the actual result of the test.

    Where can Mode $06 data information be obtained?

    Mode $06 Lists

    Information on translating and converting Mode $06 hex code can be found on the international Automotive Technicians Network website (www.iatn.com).

    Does the OBD have a fuse?

    Locating the OBD fuse

    The OBD fuse usually blows for good reason, overloading the circuit. That’s because the OBD fuse is commonly shared with the cigarette lighter or 12 v socket or other consumers.

    Can OBD2 scanner damaged ECU?

    Apart from some “killer commands”, the ECU might have been destroyed electrically. The OBDII-Interface can implement several different data buses with different voltage levels. If the bus lines get connected to +12V, this could destroy something.

    Does OBD drain battery?

    Battery Drain

    So a poorly designed OBD device, when left plugged into the OBD port, might completely drain your battery. Worse still, if a device is not carefully designed, it can turn on your ECU even while the car is not running, draining your battery even faster.

    What is DLC fuse?

    The data link connector (DLC) is the multi-pin diagnostic connection port for automobiles, trucks, and motorcycles used to interface a scan tool with the control modules of a given vehicle and access on-board diagnostics and live data streams.

    How do you fix OBD communication failure?

  • Check Fuse Box.
  • Clean The OBD2 Port.
  • Broken OBD Power Wire.
  • Damaged OBD2 Scanner Pins.
  • Update OBD App.
  • Get Your ECU Reprogrammed.

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