how to troubleshoot my Honda Pilot YF3 (2016-2022) if the engine won’t start?

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, torque wrench, and basic hand tools.
• Ensure the vehicle is in park (or neutral for manual transmissions) and the parking brake is engaged.

2. Battery Inspection

• Sub-steps:
  1. Disconnect the negative terminal of the battery to prevent electrical shorts.
  2. Clean any corrosion from the battery terminals using a wire brush.
  3. Reconnect the battery terminals securely and test the voltage again.

3. Starter and Relay Testing

• Sub-steps:
  1. Locate the starter relay in the fuse box.
  2. Swap the starter relay with a similar relay to see if the issue resolves.
  3. If the vehicle starts, replace the faulty relay.

4. Fuel System Check

• Sub-steps:
  1. Locate the fuel pump fuse and inspect it for continuity; replace if blown.
  2. Check the fuel pump operation by turning the ignition to "ON" and listening for the pump.
  3. If no sound is heard, check fuel pump connections and wiring for damage.

5. Ignition System Inspection

• Sub-steps:
  1. Remove one of the spark plugs and inspect for wear or damage.
  2. Check for spark by connecting the spark plug to the ignition coil and grounding it to the engine block while cranking the engine.
  3. If there's no spark, test the ignition coil and related wiring for faults.