Answers
Sep 10, 2023 - 07:09 AM
Check wiring for frays, cracks, anything out of the normal will cause the speed sensor to fail. If you keep replacing sensors and the problem persists its the only thing i can think of. Good luck and I hope this serves you well.
Sep 11, 2023 - 06:01 PM
Hello there.
The ABS (Antilock Brake System) ESP (Electronic Stability Program) BAS (Brake Assist System) warning lights are all interconnected and often indicate a problem within the vehicle's braking and stability control systems. Since you've already replaced all four-speed sensors and are now encountering an "intermittent signal in the left rear," there are a few steps you can take to diagnose and potentially resolve the issue:
1) Inspect the Left Rear Sensor Wiring. Check the wiring harness and connections for the left rear wheel speed sensor. Look for any damaged wires, loose connections, or corrosion. Even a small break in the wire can cause intermittent signal issues.
2) Wheel Hub and Bearing Assembly Inspection. Sometimes, the issue may be related to the wheel hub and bearing assembly itself. Ensure that the hub and bearing assembly in the left rear wheel is in good condition, as a failing bearing can disrupt the sensor's operation.
3) Check the Tone Ring and Reluctor Ring. Some vehicles have tone rings or reluctor rings that are part of the wheel hub assembly and work in conjunction with the wheel speed sensor. Ensure that these are clean, undamaged, and properly aligned. Any damage or debris on these rings can cause intermittent signals.
4) Inspect ABS Rings. In addition to the reluctor/tone ring, some vehicles have ABS rings on the axle shafts. Make sure that the ABS ring on the left rear axle shaft is in good condition.
5) Check ABS Module and Wiring. Examine the wiring leading to the ABS module and the connections at the module itself. A faulty ABS module or corroded connections can cause intermittent ABS system issues.
6) Intermittent Fault Diagnosis. Intermittent electrical issues can be challenging to diagnose. Consider using a multimeter to check the continuity of the wiring from the left rear speed sensor to the ABS module. Look for any loose or damaged connectors along the way.
7) Clear Codes and Monitor. After performing the checks and ensuring everything is in order, clear the fault codes with your code reader. Drive the vehicle and monitor if the ABS ESP BAS lights return. If they do, it's essential to record the specific fault codes that are generated. This information can provide further clues about the issue.
If the issue persists despite your efforts, it may be best to consult a professional mechanic or a dealership with the appropriate diagnostic equipment to pinpoint the exact cause of the intermittent signal issue.
Remember that safety is paramount when dealing with ABS and stability control systems. If you're uncertain about any aspect of the diagnosis or repair process, it's always best to consult with a qualified mechanic who has experience with your specific vehicle make and model. They can use specialized diagnostic tools to identify and resolve the problem more effectively.
We hope this helps. Have a nice day.
The ABS (Antilock Brake System) ESP (Electronic Stability Program) BAS (Brake Assist System) warning lights are all interconnected and often indicate a problem within the vehicle's braking and stability control systems. Since you've already replaced all four-speed sensors and are now encountering an "intermittent signal in the left rear," there are a few steps you can take to diagnose and potentially resolve the issue:
1) Inspect the Left Rear Sensor Wiring. Check the wiring harness and connections for the left rear wheel speed sensor. Look for any damaged wires, loose connections, or corrosion. Even a small break in the wire can cause intermittent signal issues.
2) Wheel Hub and Bearing Assembly Inspection. Sometimes, the issue may be related to the wheel hub and bearing assembly itself. Ensure that the hub and bearing assembly in the left rear wheel is in good condition, as a failing bearing can disrupt the sensor's operation.
3) Check the Tone Ring and Reluctor Ring. Some vehicles have tone rings or reluctor rings that are part of the wheel hub assembly and work in conjunction with the wheel speed sensor. Ensure that these are clean, undamaged, and properly aligned. Any damage or debris on these rings can cause intermittent signals.
4) Inspect ABS Rings. In addition to the reluctor/tone ring, some vehicles have ABS rings on the axle shafts. Make sure that the ABS ring on the left rear axle shaft is in good condition.
5) Check ABS Module and Wiring. Examine the wiring leading to the ABS module and the connections at the module itself. A faulty ABS module or corroded connections can cause intermittent ABS system issues.
6) Intermittent Fault Diagnosis. Intermittent electrical issues can be challenging to diagnose. Consider using a multimeter to check the continuity of the wiring from the left rear speed sensor to the ABS module. Look for any loose or damaged connectors along the way.
7) Clear Codes and Monitor. After performing the checks and ensuring everything is in order, clear the fault codes with your code reader. Drive the vehicle and monitor if the ABS ESP BAS lights return. If they do, it's essential to record the specific fault codes that are generated. This information can provide further clues about the issue.
If the issue persists despite your efforts, it may be best to consult a professional mechanic or a dealership with the appropriate diagnostic equipment to pinpoint the exact cause of the intermittent signal issue.
Remember that safety is paramount when dealing with ABS and stability control systems. If you're uncertain about any aspect of the diagnosis or repair process, it's always best to consult with a qualified mechanic who has experience with your specific vehicle make and model. They can use specialized diagnostic tools to identify and resolve the problem more effectively.
We hope this helps. Have a nice day.
Sep 24, 2023 - 04:17 PM
I had the same truck and it was notornotorious for this the wires have cheap material covering it which in weathering weakens the material causing shorts in the wiring
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