my Honda Pilot YF3 (2016-2022) has a flickering dashboard light, what's the cause?

Solution

1. Preparation

• Gather tools: multimeter, OBD-II scanner, socket set, wire brush.
• Disconnect the negative battery terminal to prevent electrical shorts while working on the vehicle.

2. Inspect and Clean Battery Connections

• Remove the battery terminals using a socket set.
• Clean the battery terminals and cable ends with a wire brush to remove corrosion.
• Reattach the terminals securely, ensuring a tight connection.

3. Test and Replace Battery (if necessary)

• Reconnect the battery and use a multimeter to check the voltage.
• If the battery voltage is low or it fails to hold a charge, replace the battery.
• Dispose of the old battery properly according to local regulations.

4. Test and Replace Alternator (if necessary)

• With the vehicle running, use a multimeter to measure the alternator output at the battery.
• If the output is below the specified range (13.7V - 14.7V), remove the alternator:
  • Disconnect the negative battery terminal again.
  • Remove the serpentine belt.
  • Disconnect electrical connections and mounting bolts.
  • Install the new alternator and reconnect all components.

5. Repair Wiring Issues (if identified)

• Inspect any damaged wiring or connectors found during diagnostics.
• Repair or replace any damaged wiring or connectors to ensure proper electrical flow.