What is the OBD-II Port?

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If you’re a fleet owner, fleet manager, or even fleet driver, you should know about the OBD-II port. It’s a standardized diagnostic port that allows you to access data from the computer in a vehicle’s engine. GPS trackers can be installed in a vehicle’s OBD-II port to provide live engine and trip data to a central hub or the driver.

In this article we will outline the basics of OBD-II ports, the history of the OBD-II port, and detailed specs on the OBD-II port pinout. Vehicles are integral to fleets and understanding the OBD-II port is essential to getting the most out of yours.

What is OBD-II Port?

So what exactly is the OBD-II port? To start out let’s break down the abbreviation. “OBD” stands for “on-board diagnostics.” It refers to the vehicle’s electronic system that provides self-diagnostics and reporting features. This system is used by repair technicians to gain access to subsystem information in order to monitor the vehicle’s performance and properly repair it.

On-board diagnostics (OBD) is the uniform protocol that is used in most light-duty vehicles in order to access the vehicle’s diagnostic information. This information is produced by the vehicle’s engine control unit (ECU, also known as the engine control module). The engine control unit acts as the “brain” of the vehicle.

A vehicle’s OBD-II is a computer that monitors mileage, emissions, speed, and additional data about the vehicle. It’s connected to the vehicle’s dashboard and will alert the driver if any issues are detected (by turning on the check engine light for example).

The OBD-II port is accessible from inside the vehicle. It will generally be located under the dash on the driver’s side. It enables a mechanic (or anyone else with a specialized tool) to read the error code generated by the engine. Looking to install GPS trackers in your fleet vehicles? Check out our comprehensive guide to learn more about where these devices are installed.

History Behind the OBD-II Diagnostic Port

Early Years of On-Board Diagnostics

The origins of the OBD-II port began in the 1960s. Some of the organizations involved in the preliminary framework for the standard were the Society of Automotive Engineers (SAE), the California Air Resources Board, the Environmental Protection Agency, and the International Organization for Standardization.

The first on-board diagnostics system that had the capacity to be scanned to check for issues with the vehicle’s engine was introduced by Volkswagen in 1968. Over ten years later, Datsun released a very basic on-board diagnostics system. Jump forward to 1980, when General Motors revealed a proprietary system including interface and protocol that was able to generate engine diagnostics and alert the driver via a check engine light. At the same time, other car manufacturers were introducing their own versions of on-board diagnostics.

Up until this time, before standardization hit the industry, manufacturers created their own proprietary systems. This meant the tools required to diagnose different vehicle’s engines were all different. They had their own connector type, requirements for electronic interface, and each used custom codes for reporting problems.

OBD-II Diagnostic Port Standardization 

Standardization finally came to on-board diagnostics in the late 1980s. In 1988 the Society of Automotive Engineers released a recommendation that called for a standard connector pin and set of diagnostics across the industry.

In 1991 the state of California mandated that all vehicles have some form of basic on-board diagnostics. This is known as OBD-I, a precursor to the OBD-II port.

OBD-II was created three years later, in 1994. In that year California required all vehicles sold (starting in 1996) to have on-board diagnostics as recommended by SAE. This is known as OBD-II. California introduced the legislation primarily in order to perform across-the-board emissions testing on vehicles. Due to California’s legislation, in 1996 car manufacturers started to install OBD-II ports in all cars and trucks across the country.

OBD-II introduced standardized diagnostic trouble codes (DTCs). There is a slight variation among OBD-II systems. These variations are known as protocols. They are specific to vehicle manufacturers and there are five basic signal protocols:

  • ISO14230-4 (KWP2000): Keyword Protocol
  • ISO9141-2: Used in all Chrysler vehicles
  • SAE J1850 VPW: Variable Pulse Width
  • SAE J1850 PWM: Pulse Width Modulation
  • ISO 15765 CAN: Controller Area Network (used in all vehicles made after 2008)

In-Depth: OBD-II Diagnostic Port

The OBD-II port pinout gives access to the engine’s status information and Diagnostic Trouble Codes. The DTCs cover a number of aspects of the vehicle including powertrain (engine and transmission) and emission control systems. The OBD-II pinout also provides further information including the vehicle identification number (VIN), Calibration Identification Number, ignition counter, and emissions control system counters.

These DTCs are stored in a computer system. It’s important to note that these codes vary between manufacturers. There are trouble codes for a wide range of aspects of the vehicle including powertrain (including engine, transmission, emissions), chassis, body, and network. The list of standard diagnostic trouble codes is extensive.

If a fleet vehicle is brought to a shop to be serviced, the mechanic can connect to the vehicle’s OBD-II port pinout with a standardized scanning tool to read the error codes and identify the issue. The OBD-II port lets mechanics accurately diagnose issues with your fleet’s vehicles, inspect them promptly, and fix any issues before they become major problems. Ultimately the OBD-II port helps get your fleet vehicles back on the road faster and stay there longer.

Detailed Look: OBD-II Port Pinout

Any OBD-II scan tool can read DTCs due to the standardized pinout. Scanning tools have the capacity to read from any of the 5 protocols. The standardized OBD-II port pinout is as follows:

Pin 1: Utilized by manufacturer

Pin 2: Utilized by SAE J1850 PWM and VPW

Pin 3: Utilized by manufacturer

Pin 4: Ground

Pin 5: Ground

Pin 6: Utilized by ISO 15765-4 CAN

Pin 7: ISO 14230-4 and The K-Line of ISO 9141-2

Pin 10: Utilized solely by SAE J1850 PWM

Pin 14: Utilized by ISO 15765-4 CAN

Pin 15: ISO 14230-4 and the K-Line of ISO 9141-2

Pin 16: Power from the vehicle’s battery


Your fleet vehicle's OBD-II ports may be small but they can play a big role in helping your fleet succeed. To learn about what OBD-II ports can be used to help your fleet succeed check out Azuga Fleet. This smart fleet tracking software will allow you to take your company to the next level without the growing pains.

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Multi-Drop Route Planning

A multi-drop route planner is a process that plans a route for a driver to make more than two deliveries in multiple locations. It uses vehicle routing software to collect and analyze thousands of data points and determine the best delivery route. This route planning software can plan, re-route, and reschedule without causing any danger to the driver, environment, or business. It considers many factors, such as the number of distribution centers, warehouses, or residential areas a driver has to visit, resource availability, and driver safety. 

How Does Multi-Drop Route Planning Work? 

The route optimization software tracks the vehicle while factoring in when deliveries need to arrive. Of course, a human being should ensure that everything has been planned out properly, but the process should be automatic. Both this person and the system should look at distances, travel time, and fuel consumption. 

Once a route is set, the route optimization software compiles data to choose the best vehicle and driver depending on the delivery. It uses data based on the route and the client’s needs. At this point, it also considers the driver’s hours and weather conditions to determine how much time is needed. These systems need to work in real-time to ensure that managers and clients can connect with up-to-date information. 

Benefits of Multi-Drop Route Planning

There are various benefits to multi-drop route planning. It maximizes productivity, keeps fuel costs low, promotes driver safety, and helps businesses stay compliant with federal driver hour regulations. Your business will save money by using its drivers effectively and not using as much fuel. 

Where to Get Multi-Drop Route Planning Software

If you’re looking for this software, you don’t need to search any further! Azuga’s route optimization software allows for multiple stops. It provides the best routes based on historical data, traffic conditions, weather conditions, and machine learning that helps it create the best routes for you in real-time. See what you can do with route planning software by trying out a demo today!

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Fleet Dispatching

If you manage a fleet, you probably already understand the delicate dance that is fleet dispatching. If not, you may not realize just how crucial this process is to the success of any fleet-based business. 

What Is Fleet Dispatching?

Simply put, fleet dispatching is the process by which commercial fleet drivers are sent out into the field to make deliveries, service customers, and handle other business-related tasks. But it involves so much more than simply telling drivers, “you go there.” Good fleet dispatching may also involve considerations for traffic conditions, road hazards, driver skill sets, customer preferences, and onboard equipment. When done correctly, it’s a skillful juggling act that helps a business reach its daily goals. When poorly handled, it can be a disaster for all concerned.

What Is a Fleet Dispatcher?

A fleet dispatcher is a person in charge of scheduling and arranging dispatch for a commercial fleet. Small fleets may have a single dispatcher to manage all calls, while larger enterprise fleets may employ an entire team. 

A fleet dispatcher must clearly understand schedules and routes, job proficiencies, fuel management, fleet maintenance, and regulations related to hours of service and other fleet compliance issues. A good fleet dispatcher knows the drivers in the fleet well and can anticipate their scheduling needs and which jobs they are most suited to handle. Fleet dispatchers must be masters of communication and have elite organizational skills.

Fleet Dispatch Software from Azuga

Fleet dispatching is as much an art as a science, and it can be overwhelming at times. The best way to support the fleet dispatchers on your team is to give them tools and technology that make the job easier. Fortunately, Azuga offers the answers to all of your fleet dispatching conundrums

Our GPS Fleet Tracking software can keep track of all the vehicles in your fleet along with large equipment and other assets. Dispatchers can use this information to see which vehicles are nearby when a job pops up. What’s more, we offer top-notch route optimization tools to help guide drivers around road construction, accidents, and other hazards that might prevent them from getting to their destination on time. We can even help you schedule routine maintenance, promote road safety, and automatically deliver dispatch notifications to drivers in the field. 

Learn about all the ways Azuga Fleet can help your commercial fleet stay productive and efficient while simplifying maintenance schedules and creating a culture of safety on the road. Schedule an Azuga demo today!

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Last Mile Delivery

Last mile delivery is the step in delivery when something moves from a transportation hub to its final destination, such as a residence or a retail store. This step must be as quick and efficient as possible to ensure that customers are satisfied, and products move as much as possible. What is last mile delivery, and how can businesses perfect it? 

Steps of Last Mile Delivery

There are five steps to last mile delivery to go through to ensure it is accurate and efficient. 

  1. Enter orders into a centralized system
    You've been tracking the order all along. At this point, the customer is most likely also tracking it through a tracking number. It’s essential that you track the order to know precisely where it is if they have any questions along the way. 
  1. Orders arrive at the transportation hub. 
    Last mile delivery begins at this step. From here, the business must ensure that the order gets to the customer as quickly and efficiently as possible. 
  1. Designate delivery personnel. 
    Designate delivery personnel to deliver the parcel using a last-mile logistics solution. 
  1. Load orders onto delivery vehicles. 
    Scan each item before loading them onto the delivery vehicles. This is an important part of tracking as it updates the sender and the recipient as to the order's status. You don’t want anything to get lost along the way. 
  1. The order reaches the recipient. 
    Once the order reaches the customer, the last mile delivery process is complete. Be sure to update the tracking information to indicate the item has been delivered. 

Last Mile Delivery Challenges

Big-name companies like Amazon and Walmart are replacing last mile delivery with middle mile delivery. With middle mile delivery, the company owns the fulfillment, so the delivery process goes from the port to the fulfillment center. The problem with last mile delivery is that it is expensive: it can account for 53% of a shipment’s total costs. Supply chain inefficiencies are increasing as need grows, and so costs are only going up. It’s vital to optimize last mile delivery if you want to use it for your business. 

How to Optimize Last Mile Delivery

Technology is the answer to optimizing last mile delivery. Route planning software, for example, can minimize delivery costs and cut the time that it takes to deliver. Auto dispatching also helps to cut down on mistakes and time. Finally, gathering data and getting detailed reports can help identify problems in your operations and tell you how to improve upon your weaknesses. Fleet management software like Azuga offers all of these features and more to help optimize your last mile delivery options. 

Conclusion

Last mile delivery is still the standard way smaller businesses do their deliveries, and Azuga makes it possible to keep last mile delivery, even while competing with big retailers. Find out more about Azuga by reading our blog or visiting our website.

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