LCM Alert Validation

Confidence

Failure Category

No Fault Found

Subcategory

No Fault Found

Sensor Verdict: The LCM sensor issued an alert on the RED (Brake) circuit for trailer V571325 at site CMH1. Based on the available evidence, the sensor result is rated Inconclusive with low confidence (35%). The vendor verbally claims no defect was found, but this claim is entirely unsubstantiated by any photographic or app-based evidence specific to the lighting system. The LCM system has a track record of accurately detecting real faults, and without proper PCT verification, the alert cannot be dismissed.

Photo Evidence: All three photos submitted with this work order depict tires — specifically Goodyear tires on what appears to be a trailer — showing significant and safety-critical dry rot, cracking across the sidewalls and tread shoulders, and in Photo 2, a visible deep crack/cut in the sidewall that could represent a structural breach. These tire defects are serious and warrant immediate attention, but they are entirely unrelated to the RED (Brake) lighting circuit that triggered this LCM work order. There are zero photos of any trailer lights illuminated, zero photos of the nosebox or wiring harness, and zero screenshots from the Phillips Connect TechAssist (PCT) app. The photo submission is wholly non-compliant with the required documentation for this work order type.

Vendor Compliance: The vendor (TA) failed to follow the LCM troubleshooting procedure in nearly every measurable way. The procedure explicitly requires: (1) use of the Phillips Connect TechAssist app to troubleshoot the lighting system, (2) photos of each light illuminated, (3) a clear photo of the nosebox wiring, and (4) a TechAssist app completion screenshot showing a green 'Verified' status beside each of the 5 circuits. None of these requirements were met. The technician notes are brief and lack specificity — 'all lights and circuits working no issues at this time' is an unverifiable claim without supporting documentation. While the notes mention using the 'Phillips app,' no screenshot or output from the app was provided, meaning PCT app use cannot be confirmed.

Repair Summary: No repairs were made and no parts were replaced, as indicated by the absence of any line items in the work order. The alerting RED (Brake) circuit was not addressed with any documented repair. If a true no-fault condition existed, it should have been confirmed via PCT app output showing all 5 circuits green/verified. Without that documentation, this work order cannot be closed as a valid 'no defect found' outcome.

Key Concerns: There are multiple serious concerns with this work order. First, the submitted photos are completely mismatched to the work order scope — tire condition photos were submitted instead of lighting documentation, raising questions about whether the correct trailer was even inspected or whether photos were accidentally submitted from a different job. Second, the tire defects visible in the photos are severe (deep sidewall cracking, surface craze cracking across multiple tires) and represent a potential out-of-service condition that should be escalated immediately to fleet management regardless of this work order's scope. Third, the lack of any PCT app verification means the original LCM alert on the RED (Brake) circuit remains unresolved. This work order should be flagged for re-inspection, and the vendor should be required to resubmit with full PCT app documentation and proper lighting photos. The tire condition should be reported as a separate urgent safety concern.