how to diagnose the SRS system problems on my Ford F-150 Fourteenth Generation (2021-present)?

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, basic hand tools (socket set, screwdrivers), safety glasses, and gloves.
• Disconnect the vehicle battery and allow it to sit for at least 10 minutes to ensure that the SRS system is fully powered down.

2. Repair Faulty Wiring and Connectors

• Inspect and Repair:
  • Inspect all wiring connected to the SRS system. Repair or replace any damaged wires or connectors.
  • Ensure all connectors are securely fastened, especially those under the seats.

3. Replace Faulty Components

• Replace Impact Sensors:

  • If the impact sensors fail the continuity test, remove the old sensors by disconnecting the wiring and unbolting them from their mounts.
  • Install new sensors and reconnect the wiring harness securely.

• Replace Seatbelt Assemblies:

  • If seatbelt tensioners are faulty, unbolt the seatbelt assemblies from their anchor points.
  • Install new seatbelt assemblies and ensure they are tightened to the manufacturer’s torque specifications.

4. System Reset and Testing

• Reconnect the battery.
• Use the OBD-II scanner to clear any fault codes and perform a system reset.
• Start the vehicle to check that the airbag warning light is no longer illuminated and all systems are functioning correctly.