how to diagnose Ford F-150 13th Generation (2015-2020) electrical issues

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, load tester, socket set, and wire brush.
• Ensure the vehicle is parked on a level surface and the ignition is turned off.
• Disconnect the battery to prevent electrical shock while working.

2. Battery and Connections

• Remove Battery Cables: Disconnect the negative (-) terminal first, followed by the positive (+) terminal.
• Clean Battery Terminals: Use a wire brush to clean any corrosion from the terminals and cable connectors.
• Reconnect Battery: Reconnect the positive (+) terminal first, then the negative (-) terminal, ensuring a tight fit.

3. Replace Blown Fuses

• Identify Blown Fuses: Locate any blown fuses identified during the diagnostic step.
• Replace with Correct Rating: Remove the blown fuses and replace them with new fuses of the same amperage rating to ensure proper function.

4. Repair or Replace Wiring

• Inspect Damaged Wires: Look for any frayed, broken, or corroded wires in the wiring harness.
• Solder or Replace Wires: Use soldering tools to repair minor wire damage or replace damaged sections of wiring with new connectors and wire.

5. Ground Connection Repair

• Locate Ground Points: Identify all ground points for the electrical systems in the vehicle.
• Clean and Tighten Ground Connections: Clean corrosion from ground connections using a wire brush, and tighten any loose bolts.