how to diagnose Ford Explorer Fifth Generation (2011-2019) electrical issues

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

513 words

Problem Statement

Learn how to diagnose and fix electrical issues in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before performing any electrical repairs to avoid shock or short circuits.

Symptoms

•Check engine light illuminated
•Power windows malfunctioning
•Interior lights flickering or not working
•Electrical accessories (e.g., radio, navigation) failing to operate
•Warning messages on the dashboard
•Difficulty starting the vehicle

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any trouble codes.
2
Inspect the battery connections for corrosion or looseness.
3
Check the fuses in the fuse box for any blown fuses and replace as necessary.
4
Test the voltage output of the alternator using a multimeter.
5
Examine wiring harnesses for signs of damage, fraying, or shorts.
6
Inspect ground connections for corrosion or looseness, particularly at the battery and engine block.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Wire brush
•Fuse puller
•Basic socket set

Parts Required

•Replacement fuses (if blown)
•Electrical tape (for temporary repairs)
•Battery terminal cleaning solution (if corrosion is present)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any trouble codes.
2
Inspect the battery connections for corrosion or looseness.
3
Check the fuses in the fuse box for any blown fuses and replace as necessary.
4
Test the voltage output of the alternator using a multimeter.
5
Examine wiring harnesses for signs of damage, fraying, or shorts.
6
Inspect ground connections for corrosion or looseness, particularly at the battery and engine block.

Solution

1. Preparation

Gather necessary tools and parts for the repair.
Disconnect the battery terminals to prevent electrical shock.

2. Battery Inspection

Check connections:
- Remove the negative terminal first, followed by the positive terminal.
- Clean any corrosion from terminals using a wire brush and a mixture of baking soda and water.
- Reconnect the positive terminal first, then the negative.

3. Fuse Replacement

Locate fuse box:
- Open the fuse box, usually found under the dashboard or in the engine compartment.
Inspect fuses:
- Use a fuse puller to remove each fuse and check for continuity.
- Replace any blown fuses with the same amp rating.

4. Alternator Testing

Voltage test:
- Reconnect the battery and start the engine.
- Set the multimeter to measure DC voltage.
- Connect the positive lead to the positive terminal of the battery and the negative lead to the ground.
- A healthy alternator should output between 13.8 and 14.5 volts with the engine running.

5. Wiring Inspection

Visual check:
- Inspect wiring harnesses for visible damage or wear.
- Look for exposed wires, fraying, or melted insulation.
Repair or replace any damaged wires as necessary.

6. Ground Connection Inspection

Check ground points:
- Locate ground connections, typically found on the engine block and chassis.
- Remove the ground wire, clean the connection points, and reconnect securely.