Real Fixes from SureTrack® provides expert-based knowledge captured from millions of documented repairs and community discussions. Read on to see how SureTrack can help you fix tricky issues that are not easily diagnosed with OEM information alone. SureTrack is available at no additional cost within ProDemand®.
This fix illustrates the power of the SureTrack community to help a fellow tech quickly solve a tricky diagnosis. SureTrack community member, Autoservicio Venegas, had a 2018 Jeep Renegade Latitude roll into the shop. They posed the question to the community, and with help from kgoble and others, they resolved the issue quickly.
In the automotive industry, ensuring that every component of a vehicle functions correctly is crucial for safety and performance. One common issue that many automotive professionals encounter is related to the Electric Park Brake (EPB). In this blog, we will discuss a specific case involving a 2018 Jeep Renegade Latitude, where the red brake light and Diagnostic Trouble Code (DTC) C140B-94 appeared after a collision repair.
Complaint & Initial Observations
After a collision repair, a new caliper and EPB were installed directly from the dealer. However, the red brake light turned on immediately after the key was turned on, and the DTC C140B-94 was present.
The initial steps included installing a new EPB and caliper from the dealer and checking the wiring around the impact area, which appeared to be in good condition.
The main question raised was whether anyone had experienced issues with the vehicle not recognizing the new EPB position. This led to a series of diagnostic steps and troubleshooting efforts.
Community Insight
Kgoble provided valuable insights, explaining that there is no direct fuse for the EPB. The ABS module handles the power and ground toggles to move the motor in and out. Kgoble swapped the actuators left to right, but the codes remained the same. This indicated that the issue was not with the actuators themselves.
Real Fix
After thorough diagnostics, it was determined that the wiring from the ABS module to the actuator was good, with no opens or shorts to B+/-. This led to the conclusion that the ABS module itself was likely faulty. Replacing the ABS module resolved the issue, and the EPB functioned correctly.
Conclusion
This case highlights the importance of thorough diagnostics and understanding the role of different modules in vehicle systems. For automotive professionals, encountering such issues can be challenging, but with the right approach and knowledge, solutions can be found. If you face similar issues, always ensure to check the wiring, modules, and follow the proper calibration procedures.
Stay tuned for more insights and troubleshooting tips in the automotive world!
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