ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Diagnostic OBD2 Scanner

Updated on January 17, 2012

Vehicle Connector for a Diagnostic OBD2 Scanner

Standard Plug for Diagnostic OBD2 Scanner or OBD2 Code Reader
Standard Plug for Diagnostic OBD2 Scanner or OBD2 Code Reader

Differences - Diagnostic OBD2 Scanner Plugs

The vehicle diagnostic OBD2 scanner plug should be located within three feet of the driver and must be instantly accessible, meaning no tools are required to reveal the connection plug. It may be located underneath the dash or behind the ashtray, removable storage compartment or any simple hand removed cover. Cars and light trucks became mandatory in using the second generation OBD diagnostic interface system from the beginning of 1996 in USA. Other than the connector plug itself, the vehicle must have (unless removed by someone) an identification for OBD2 (OBD II) compliancy by means of a sticker or a tag plate under the hood.

European cars started using a similar system from January 2001 on gasoline engines and from January 2004 on diesel engines to monitor engine emissions. The European system name is EOBD2 which means Enhanced On-board Diagnostic System 2. The diagnostic OBD2 scanner or code reader plug is the same 16 pin shaped plug. The first system before the EOBD2 was the EOBD which stands for European On-Board Diagnostic. The EOBD system had no European stipulated standard and was different from manufacturer to manufacturer, in some cases the system also differed within the same manufacturer from one model to another.


Explanation of the Diagnostic OBD2 Scanner Plug Terminals
See Above Plug for Terminal number reference

  • Pin 2 - J1850 Bus+
  • Pin 4 - Chassis Ground
  • Pin 5 - Signal Ground
  • Pin 6 - CAN High (J-2284)
  • Pin 7 - ISO 9141-2 K Line
  • Pin 10 - J1850 Bus
  • Pin 14 - CAN Low (J-2284)
  • Pin 15 - ISO 9141-2 L Line
  • Pin 16 - Battery Power

There are three different second generation OBD software communications protocols. These are:

  • SAE J1850 VPW (Variable Pulse Width Modulation)
  • ISO 9141 Circuitry
  • SAE J1850 PWM (Pulse Width Modulation)

Variable Pulse Width Modulation - SAE J1850
These are mostly likely found on GM cars and light trucks. This connector should have connector plug contacts in pins: 2 – 4 – 5 – 16 - BUT NOT 10

ISO 9141 Circuitry
These are commonly found on Chrysler vehicles, Asian imports and most European vehicles. This connector should have connector plug contacts in pins: 4 – 5 – 7 – 15 – 16

Pulse Width Modulation - SAE J1850
Ford vehicles utilize the SAE J1850 PWM system including Ford based vehicles like some Jaguar models (S-Type). This connector should have connector plug contacts in pins: 2 – 4 – 5 – 10 – 16

If your vehicle has this style connector, but doesn't have these pins populated, you probably have a pre-OBD2 vehicle, probably an OBD(1). Even having the connector with the contacts shown here is not an OBD2 compliant guarantee. This diagnostic OBD2 scanner connector has been seen on vehicle models before 1996, or end of 1995 and were not OBD2 compliant. The only sure way is by checking for the mandatory sticker or plate or checking with your local dealer through VIN identification.

You can check your OBD2 engine yourself using a diagnostic OBD2 scanner and repair your vehicle like a pro!

Technician operating a Diagnostic OBD2 Scanner for vehicle repair analyzes
Technician operating a Diagnostic OBD2 Scanner for vehicle repair analyzes
Modern Engines use the OBD2 system which needs a Diagnostic OBD2 Scanner to do certain repairs correctly and reset the faults and 'Check Engine' light
Modern Engines use the OBD2 system which needs a Diagnostic OBD2 Scanner to do certain repairs correctly and reset the faults and 'Check Engine' light
A Diagnostic OBD2 Scanner for any OBD2 compliant vehicle
A Diagnostic OBD2 Scanner for any OBD2 compliant vehicle

History and information on diagnostic OBD2 scanners and their implementations

Comments

Submit a Comment

No comments yet.

working

This website uses cookies

As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://hubpages.com/privacy-policy#gdpr

Show Details
Necessary
HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
LoginThis is necessary to sign in to the HubPages Service.
Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
AkismetThis is used to detect comment spam. (Privacy Policy)
HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
Features
Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
MavenThis supports the Maven widget and search functionality. (Privacy Policy)
Marketing
Google AdSenseThis is an ad network. (Privacy Policy)
Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
Index ExchangeThis is an ad network. (Privacy Policy)
SovrnThis is an ad network. (Privacy Policy)
Facebook AdsThis is an ad network. (Privacy Policy)
Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
AppNexusThis is an ad network. (Privacy Policy)
OpenxThis is an ad network. (Privacy Policy)
Rubicon ProjectThis is an ad network. (Privacy Policy)
TripleLiftThis is an ad network. (Privacy Policy)
Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
Statistics
Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)