How to Diagnose and Solve C1947 Seat Track Position Switch Circuit Short to Ground Issues

As a seasoned car expert, I understand the frustration that comes with encountering a C1947 Seat Track Position Switch Circuit Short to Ground issue. But don’t worry, I’m here to help you diagnose and solve this problem. Let’s dive in!

Understanding the C1947 Code

The C1947 code is a diagnostic trouble code (DTC) for “Seat Track Position Switch Circuit Short to Ground”. It’s triggered when the Engine Control Module (ECM) detects a short circuit in the seat track position switch. This can lead to uncomfortable seating positions and potential safety risks.

What Causes the C1947 Code?

Several factors can cause the C1947 code to appear. These include:

1. Defective seat track position switch: This is the most common cause. The switch may be faulty, leading to incorrect signals being sent to the ECM.
2. Wiring issues: Damaged, corroded, or shorted wires can also trigger this code.
3. Bad ECM: Though rare, a faulty ECM can cause this code.

Diagnosing the C1947 Code

Before you start, ensure you have a reliable OBD-II scanner, a digital multimeter, and a detailed vehicle service manual. Here’s a step-by-step guide to diagnosing the C1947 code:

Step 1: Scan for Codes

Connect your OBD-II scanner to the vehicle’s diagnostic port and scan for codes. If the C1947 code appears, note any other codes that may be present as they could be related.

Step 2: Inspect the Wiring

Check the wiring and connectors leading to the seat track position switch. Look for signs of damage, corrosion, or shorting. If you find any issues, repair or replace the wiring.

Step 3: Test the Seat Track Position Switch

Using your digital multimeter, test the seat track position switch for continuity. If it’s defective, replace it.

Step 4: Clear the Codes and Test Drive

After making the necessary repairs, clear the codes using your OBD-II scanner. Then, take your vehicle for a test drive to see if the code reappears.

Solving the C1947 Code

If the C1947 code persists after diagnosis and repair, it may be due to a more complex issue. Here are some additional steps you can take:

Step 1: Check the ECM

A faulty ECM can cause the C1947 code. Have a professional inspect the ECM for any issues.

Step 2: Consult a Professional

If you’re unable to solve the issue yourself, it’s time to consult a professional mechanic. They have the tools and expertise to accurately diagnose and repair the problem.

Conclusion

Dealing with a C1947 Seat Track Position Switch Circuit Short to Ground issue can be daunting, but with the right tools and guidance, you can diagnose and solve this problem. Remember, safety should always be your priority. If you’re unsure about any step, consult a professional mechanic.

FAQs

1. Can I drive my car with a C1947 code?

While your car may still be drivable with a C1947 code, it’s not recommended. The issue can lead to uncomfortable seating positions and potential safety risks.

2. How much does it cost to fix a C1947 code?

The cost to fix a C1947 code can vary depending on the cause. A simple wiring repair may cost less than replacing a faulty ECM.

3. Can I diagnose and fix a C1947 code myself?

Yes, with a reliable OBD-II scanner, a digital multimeter, and a detailed vehicle service manual, you can diagnose and potentially fix a C1947 code. However, if you’re unsure about any step, consult a professional mechanic.