Note: This article is a written transcript of a tutorial video titled “Troubleshooting an ABS and Traction Control Light on a Jeep Wrangler JK” by the Let Go Video channel on YouTube. The purpose of this article is to provide a step-by-step guide on how to troubleshoot and fix an issue with the ABS and traction control lights in a Jeep Wrangler JK.
If you own a Jeep Wrangler JK and notice that the ABS and traction control lights are illuminated on your dashboard, it indicates that the ABS and traction control systems are currently disabled as a safety precaution. In this article, we will guide you through the process of troubleshooting this issue using an Autel MK808 diagnostic scanner.
Step 1: Diagnostic Scanner Start by connecting the Autel MK808 diagnostic scanner to your Jeep Wrangler JK. This scanner is a powerful tool that can scan for and communicate any trouble codes stored in your vehicle’s onboard computer system.
Step 2: Scan for Codes Once the diagnostic scanner is connected, scan for trouble codes. In the video, a C102A code is displayed, which indicates an issue with the left rear wheel speed sensor’s comparative performance. This suggests that the left rear wheel speed sensor may be defective.
Step 3: Investigate Further To get more details about the issue, click on the code displayed on the scanner. The screen will show you the motion of the front right, front left, rear right, and rear left wheels. In this case, the rear left wheel registered zero miles per hour while the other three wheels had motion. This supports the suspicion that the left rear wheel speed sensor is faulty.
Step 4: Test Drive To confirm the issue, take your Jeep Wrangler JK for a test drive. During the test drive, pay attention to any unusual sensations or behaviors, such as the ABS pumps activating and the vehicle pulling to one side. These symptoms are often associated with a faulty wheel speed sensor.
In the video, the test drive reveals that the left rear wheel speed sensor is indeed defective. When pulling forward, the scanner displays zero miles per hour for the left rear wheel, while the other three wheels register approximately two miles per hour.
Step 5: Replace the Wheel Speed Sensor To resolve this issue, replacing the left rear wheel speed sensor is necessary. While the video does not provide a tutorial on how to replace the sensor, the channel creator mentions that there will be another video demonstrating the replacement process. It’s important to note that if you are not confident in performing the replacement yourself, it is recommended to seek professional assistance.
Conclusion If you are experiencing an issue with the ABS and traction control lights illuminated on your Jeep Wrangler JK, it is likely due to a defective wheel speed sensor. By following the steps outlined in this article, you can diagnose the issue using a diagnostic scanner and confirm if the left rear wheel speed sensor is indeed faulty. Remember to exercise caution and seek professional help if needed when it comes to replacing the sensor.
Thank you for reading this article. We hope it has provided you with valuable information on how to troubleshoot and fix the ABS and traction control light issue on your Jeep Wrangler JK. Please like, subscribe, and share the Let Go Video channel for more helpful tutorial videos.
