What are the common airbag system faults in the Ford Explorer Sixth Generation?

Common Airbag System Faults in Ford Explorer Sixth Generation (2020-Present) (U625)

Common Faults

1. Faulty Airbag Module
2. Defective Crash Sensors
3. Wiring Issues: Damaged or corroded wiring in the airbag system.
4. Faulty Seat Belt Tensioners
5. Malfunctioning Occupant Classification System (OCS)
6. Corrupted Software: Occasional software glitches that may require reprogramming.

Tools Required

• OBD-II Scanner
• Digital Multimeter
• Wiring Diagram for Airbag System
• Torque Wrench
• Sockets and Wrenches (various sizes)
• Safety Glasses and Gloves

Step 1: Initial Inspection

• Visual Inspection: Check for any visible damage to the airbag components, including the steering wheel airbag, dashboard airbag, and side airbags.
• Seat Belts: Inspect for any signs of fraying or damage.

Step 2: Scan for DTCs

• Connect OBD-II Scanner: Plug the scanner into the OBD-II port under the dashboard.
• Read Codes: Use the scanner to check for any DTCs related to the airbag system.
• Record Codes: Note down any codes that appear, as they will guide your troubleshooting.

Step 3: Check Wiring and Connectors

• Visual Inspection of Connectors: Check all connectors related to the airbag system, ensuring they are securely connected and free of corrosion.
• Use a Multimeter: Test continuity in the wiring harnesses connected to the airbag system.

Step 4: Test Crash Sensors

• Locate Sensors: Identify the locations of the crash sensors (usually near the front of the vehicle).
• Check Voltage: Use a multimeter to check for proper voltage at the sensors.
• Inspect for Damage: Look for any physical damage to the sensors.

Repair Instructions

Repairing Faulty Airbag Module

1. Locate Airbag Module: Typically found under the center console or dashboard.
2. Disconnect Battery: Disconnect the negative terminal of the battery to avoid accidental deployment.
3. Remove Module: Unbolt and disconnect wiring from the airbag module.
4. Replace Module: Install a new airbag module, ensuring all connectors are tight.
5. Reconnect Battery: Reconnect the negative terminal and clear any DTCs.

Replacing Crash Sensors

1. Locate Sensor: Identify the faulty crash sensor based on DTCs.
2. Disconnect Battery: Always disconnect the battery first.
3. Remove Sensor: Unbolt the sensor from its mount.
4. Install New Sensor: Secure the new sensor in place and reconnect wiring.
5. Reconnect Battery and Test: Reconnect the battery and perform a system check.

Addressing Wiring Issues

1. Inspect Wiring Harness: Look for frays, cuts, or corrosion.
2. Repair or Replace Wires: Use solder and heat shrink tubing to repair damaged wires, or replace sections of the wiring harness as needed.
3. Secure Connections: Ensure all connectors are secure and free of corrosion.

Conclusion

If all diagnostics and repairs are completed but the airbag warning light remains on, it may be necessary to visit a certified Ford technician for advanced diagnostics and programming, as some faults may require specialized tools and software to resolve. Always prioritize safety when working with airbag systems, as improper handling can lead to accidental deployment.