how to troubleshoot my Ford F-150 13th Generation (2015-2020) that won't start

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery by removing the negative terminal to prevent any electrical shorts.

2. Battery Inspection and Replacement

• Sub-steps:
  1. Remove the battery terminals (negative first, then positive).
  2. Inspect the battery for any signs of swelling, leaks, or corrosion.
  3. If the battery is faulty, replace it with a new one of the same specifications (usually a Group 65 for F-150).
  4. Clean the battery terminals using a battery terminal cleaner or a mixture of baking soda and water.
  5. Reconnect the battery terminals (positive first, then negative).
• Tools Required: Battery terminal cleaner, socket set.

3. Starter Motor Testing and Replacement

• Sub-steps:
  1. Locate the starter motor, typically found near the rear of the engine, mounted to the transmission.
  2. Disconnect the wiring harness from the starter.
  3. Use a multimeter to test for voltage at the starter terminal while someone turns the key to the "start" position.
  4. If there is voltage and the starter does not engage, remove the starter motor.
  5. Replace with a new starter motor if testing indicates failure (ensure to follow torque specifications for mounting bolts).
• Tools Required: Socket set, multimeter.

4. Fuel System Check

• Sub-steps:
  1. Locate the fuel pump relay in the fuse box and inspect for continuity.
  2. If necessary, replace the fuel pump relay.
  3. Check the fuel pump operation by listening for it to prime when the ignition is turned to "on."
  4. If the pump is not operational, replace it by accessing the fuel tank.
• Tools Required: Socket set, fuel pressure gauge (if needed).