The OBD2 port, short for On-Board Diagnostics, is a crucial component in your 1999 Ford Contour. It allows you to connect a diagnostic scanner to retrieve vital information about your vehicle’s performance and identify potential issues. This article will guide you to the precise location of the OBD2 port in your 1999 Ford Contour and explain its significance.
Pinpointing the 1999 Ford Contour OBD2 Port Location
The OBD2 port in a 1999 Ford Contour is typically located under the dashboard, on the driver’s side, near the steering column. It’s a standardized, trapezoidal 16-pin connector, often black in color. You might need to bend down and look upwards to spot it. Sometimes, it might be partially hidden by a plastic cover or trim panel.
Understanding the 1999 Ford Contour OBD2 Protocol
The 1999 Ford Contour utilizes the J1850 PWM (Pulse Width Modulation) communication protocol for its OBD2 system. This protocol dictates how data is transmitted between the vehicle’s computer and the diagnostic scanner. Knowing this is essential when selecting a compatible OBD2 scanner. Using an incompatible scanner can lead to communication errors and inaccurate readings.
Decoding the 1999 Ford Contour OBD2 Port Pinout
Each of the 16 pins on the OBD2 connector has a specific function. Understanding this pinout can help in advanced diagnostics and troubleshooting. Here’s a breakdown:
| Pin | Signal | Circuit | Description |
|---|---|---|---|
| 2 | J1850 Bus+ / SCP Bus | 914 (TN/OG) | ABS and other systems |
| 3 | Medium speed CAN+ or UBP bus | 2180 (WH/BK) or 1906 (VT) | Not used in 1999 Contour |
| 4 | CGND | 57(BK) | Chassis ground |
| 5 | SGND | 570(BK/WH) | Signal ground |
| 6 | CAN High | 1827(WH/LB) | Not used in 1999 Contour |
| 7 | K-LINE | 70(LB/WH) | ISO Bus (May not be used) |
| 10 | J1850 Bus- | 915(PK/LB) | SCP bus- (Part of J1850 PWM) |
| 11 | Medium speed CAN- | 2181(BK/YE) | Not used in 1999 Contour |
| 13 | PCM | 107(P) / 107(VT) | Power Train Control Module programming signal |
| 14 | CAN Low | 1828 (PK/LG) | Not used in 1999 Contour |
| 16 | +12v | 40(LB/WH) | Battery power |
Why the OBD2 Port Matters
The OBD2 port is your gateway to understanding your 1999 Ford Contour’s health. It enables:
- Diagnostics: Retrieve trouble codes (DTCs) to pinpoint malfunctions.
- Emissions Testing: Verify compliance with emissions standards.
- Performance Monitoring: Track various parameters like engine speed, coolant temperature, and fuel efficiency.
- Maintenance: Assist in preventative maintenance and repairs.
Conclusion
Locating and understanding the functionality of the OBD2 port in your 1999 Ford Contour is essential for proper vehicle maintenance and diagnostics. By using a compatible scanner and understanding the J1850 PWM protocol, you can effectively monitor your vehicle’s performance and address potential problems promptly. Always consult your vehicle’s owner’s manual for further details and safety precautions.
