LCM Alert Validation

Confidence

Failure Category

No Fault Found

Subcategory

No Fault Found

Sensor Verdict: The LCM sensor flagged the RED (Brake) circuit on trailer V508106 at site PCW1. Based on the technician's notes describing a main harness connector with poor contact causing intermittent electrical faults, there is moderate confidence (62%) that a real defect existed. The described harness connectivity issue is consistent with a brake circuit fault that an LCM sensor could detect. However, the repair narrative centers on an ABS warning light rather than directly confirming the brake lamp circuit was tested and restored to proper function, leaving some ambiguity about whether the sensor's specific alert was fully validated.

Photo Evidence: The single attached photo (TIRES.jpeg) shows a tire and wheel assembly with visible corrosion on the wheel rim and what appears to be an automatic tire inflation system (ATIS) valve/line. This photo is entirely unrelated to the RED brake lamp circuit or any lighting defect. There are no photos of brake lights illuminated, no nosebox wiring photos, and no TechAssist app completion screenshots showing green 'Verified' status for any of the 5 circuits. The photo evidence is wholly insufficient and non-compliant with the LCM troubleshooting procedure requirements.

Vendor Compliance: The vendor (COX) did not follow the LCM troubleshooting procedure. The TechAssist (PCT) app was not used, and no verification screenshots were provided. The technician did not photograph each light in the circuit illuminated, did not provide a clear nosebox wiring photo, and did not supply feedback using any of the defined expected feedback categories. The notes are brief, informal, and appear to reference a prior work order (11/7) rather than a structured response to the current LCM alert workflow. The delay in feedback and the reference to a 'pilot WO' with no initial feedback further indicate a lack of procedural compliance.

Repair Summary: The technician reports repairing the main harness connector that was not making good contact, resolving an intermittent ABS light condition. While a harness repair is a legitimate wiring fix, it is not explicitly tied to the RED brake light circuit identified by the LCM alert. No parts line items were submitted, so the scope of the repair cannot be verified. There is no confirmation that the brake lamps were tested after the repair, and no brand compliance can be assessed without part details.

Key Concerns: Several significant concerns exist with this work order. First, the attached photo is completely irrelevant to the lighting defect — it shows a tire, not a lamp or wiring. Second, the PCT app was not used, meaning there is no verified circuit-level confirmation of repair. Third, the technician's notes focus on ABS functionality rather than the brake light circuit specifically flagged by the LCM system. Fourth, no line items were submitted, making cost and parts verification impossible. Fifth, the initial WO had no vendor feedback at all ('No feedback from pilot WO'), suggesting a pattern of poor documentation compliance by this vendor on this asset. This work order should be flagged for vendor coaching and potential re-inspection to confirm the RED brake circuit is functioning correctly.