It appears you’re encountering issues with your 2017 Ford Transit Connect’s OBD2 port after a DIY cruise control installation. Specifically, it seems the wiring at the back of your OBD2 connector is now loose, causing intermittent electrical problems and preventing your vehicle from starting reliably. Let’s explore the problem and discuss potential solutions, including whether OBD2 connector replacement or “removal” (in the sense of detaching and replacing) is feasible.
Understanding the OBD2 Port Issue in Your Ford Transit Connect
The OBD2 (On-Board Diagnostics II) port is a crucial interface in your 2017 Ford Transit Connect. It’s not just for diagnostics; it’s also integrated into the vehicle’s communication network. A loose connection here can disrupt various systems, as you’re experiencing with starting issues and dashboard malfunctions. Attempting to “pin out” wires without the correct tools and knowledge can indeed damage the delicate connector and wiring.
Diagnosing the Loose OBD2 Connector Problem
Your description of having to “shake” the wires to get a connection clearly indicates a physical issue with the OBD2 connector or its wiring. The symptoms you’re facing – vehicle not starting, dashboard and radio shutting down – are consistent with a faulty or loose OBD2 port connection disrupting the vehicle’s CAN (Controller Area Network) bus communication. This bus is essential for various modules to communicate, including the engine control unit (ECU), instrument cluster, and body control module.
Solutions for Your 2017 Ford Transit Connect OBD2 Wiring Problem
Fortunately, there are several ways to address this OBD2 connector issue in your 2017 Ford Transit Connect. Here are a few options, ranging from simpler fixes to more involved solutions:
1. OBD2 Connector Replacement: A Direct Solution
Yes, it is possible to replace the OBD2 back wiring harness connector. This is likely the most effective long-term solution if the connector itself is damaged beyond repair.
- Identify the Correct Part: You’ll need to find the exact replacement OBD2 connector for your 2017 Ford Transit Connect. Contacting a Ford dealership’s parts department with your VIN (Vehicle Identification Number) is the best way to ensure you get the right part. You can also search online auto parts retailers, specifying your vehicle year and model.
- Wiring and Pinout: Carefully note the wire colors and their positions in the existing connector before removal. Ideally, take pictures or create a diagram. The new connector should come with instructions or you can find wiring diagrams online specific to the 2017 Ford Transit Connect OBD2 port.
- Professional Installation Recommended: Unless you are very comfortable with automotive electrical work, it’s highly recommended to have a professional mechanic perform the replacement. Incorrect wiring can cause further electrical damage to your vehicle’s systems.
2. Wiring Repair: If the Damage is Minor
If the damage is limited to a few wires being loose or slightly damaged at the connector, wiring repair might be an option.
- Inspect Wires Carefully: Check for broken strands, frayed insulation, or corrosion near the connector.
- Repair or Splice Wires: If wires are broken, you can carefully splice in new wire sections using proper automotive wiring techniques (soldering and heat shrink tubing for best results). Ensure you maintain the correct wire gauge and connections.
- Connector Pin Repair/Replacement: Sometimes, the pins inside the connector become bent or damaged. It might be possible to carefully straighten bent pins or replace individual pins if replacements are available (though this can be very delicate work).
3. OBD2 Extension Cable/Adapter: A Potential Temporary Fix (Use with Caution)
In some cases, an OBD2 extension cable or adapter might offer a temporary workaround, but this is generally not recommended as a permanent solution for a damaged connector.
- Bypassing the Damaged Connector: An extension cable could potentially bypass the damaged section of the original connector if the issue is very close to the port itself.
- Risk of Further Issues: Using an extension cable adds another connection point, which could introduce further points of failure or signal degradation, especially in the harsh automotive environment. This is not a recommended long-term fix for a damaged wiring harness.
Conclusion: Prioritize Correct OBD2 Connector Replacement
While attempting DIY car modifications can be rewarding, electrical systems are sensitive. In your situation, due to the critical nature of the OBD2 port and the symptoms you are experiencing, the best course of action is to pursue a proper repair. Replacing the OBD2 back wiring harness connector is the most reliable solution to ensure proper electrical connections and restore your 2017 Ford Transit Connect to its optimal working condition. Consulting a qualified mechanic is highly recommended to ensure the job is done correctly and safely. Avoid relying on temporary fixes, as a faulty OBD2 connection can lead to unpredictable vehicle behavior and potential safety concerns.
