For owners and enthusiasts of the robust 1999 Ford F150, understanding the OBD2 port is key to maintaining your truck’s health and performance. The On-Board Diagnostics II (OBD2) system is your gateway to accessing your vehicle’s computer, allowing for detailed diagnostics and troubleshooting. This article provides a comprehensive guide to the 1999 Ford F150 Obd2 Pinout, ensuring you have the knowledge needed for effective vehicle maintenance.
1999 Ford F150 OBD2 Pinout Diagram
The following table details the pin configuration for the OBD2 connector in your 1999 Ford F150. This standardized 16-pin connector is crucial for connecting diagnostic scanners and tools. Knowing the function of each pin is the first step in understanding how to communicate with your vehicle’s systems.
| Pin | Signal | Circuit | Description |
|---|---|---|---|
| 2 | J1850 Bus+ / SCP Bus | 914 (TN/OG) | Network communication for ABS and other systems |
| 3 | Medium speed CAN+ or UBP bus | 2180 (WH/BK) or 1906 (VT) | Low speed CAN bus for various modules |
| 4 | CGND | 57(BK) | Chassis Ground |
| 5 | SGND | 570(BK/WH) | Signal Ground |
| 6 | CAN High | 1827(WH/LB) | High Speed CAN bus signal (not typically used in 1999 F150) |
| 7 | K-LINE | 70(LB/WH) | ISO 9141-2 communication line (not typically used in 1999 F150) |
| 10 | J1850 Bus- | 915(PK/LB) | Network communication for ABS and other systems |
| 11 | Medium speed CAN- | 2181(BK/YE) | Low speed CAN bus signal |
| 13 | PCM | 107(P) / 107(VT) | Powertrain Control Module programming signal |
| 14 | CAN Low | 1828 (PK/LG) | High Speed CAN bus signal (not typically used in 1999 F150) |
| 16 | +12v | 40(LB/WH) | Battery Power (12V) |
Understanding this pinout is critical for using any OBD2 diagnostic tool with your 1999 Ford F150.
OBD2 Protocol and Your 1999 Ford F150
The 1999 Ford F150 utilizes the PWM (Pulse Width Modulation) J1850 protocol for OBD2 communication. This protocol was common in Ford vehicles of this era. It’s important to ensure that any diagnostic scanner you use is compatible with the J1850 PWM protocol to effectively communicate with your truck’s computer system.
While modern vehicles predominantly use CAN (Controller Area Network) protocols, understanding that your 1999 F150 relies on J1850 PWM is essential for selecting the correct diagnostic equipment and interpreting the data. Pins 2 and 10 in the pinout table are specifically dedicated to this J1850 communication.
Ford OBD-2 Compatibility in the Late 90s
To give you a broader context, here’s a glimpse at Ford’s OBD2 protocol usage around the 1999 Ford F150 model year. Note that OBD2 implementation and protocols can vary even within the same year depending on the specific model and engine.
| Model | Engine | Year | OBD-2 Protocol |
|---|---|---|---|
| Ford Aerostar | 1997 | PWM J1850 | |
| Ford Contour | 2, Gasoline (120HP) | 1996 | PWM |
| Ford Contour | 1999 | PWM J1850 | |
| Ford Cougar | V6, Gasoline (168 HP) | 1999 | PWM |
| Ford Explorer | 1998 | PWM J1850 | |
| Ford Explorer | 2000 | PWM J1850 | |
| Ford F150 (truck) | 1999 | PWM J1850 | |
| Ford F150 (van) | 1999 | PWM J1850 | |
| Ford Mustang GT | Gasoline (290 HP) | 1996 | PWM J1850 |
| Ford Puma | Gasoline (124 HP) | 1999 | PWM J1850 |
| Ford Ranger | 1995 | PWM J1850 | |
| Ford Taurus | 1996 | PWM J1850 | |
| Ford Thunderbird LX | 1997 | PWM J1850 | |
| Ford Windstar | 1995 | PWM J1850 |
This table illustrates that during the late 1990s, Ford commonly utilized the PWM J1850 protocol in a range of models, including the F150. As vehicle technology advanced, Ford, like other manufacturers, transitioned to more advanced protocols like CAN.
Conclusion
Understanding the 1999 Ford F150 OBD2 pinout and its J1850 PWM protocol is vital for anyone looking to perform diagnostics or repairs on this classic truck. By referencing this guide, you can ensure you’re using the correct tools and interpreting data accurately, keeping your 1999 Ford F150 running smoothly for years to come. Make sure to always consult your vehicle’s repair manual for specific diagnostic procedures and safety information.
