LCM Alert Validation

Confidence

Failure Category

Wiring

Subcategory

Wiring - Damaged Wiring

Sensor Verdict: The LCM sensor correctly identified a real defect on the RED (Brake) circuit with high confidence (95%). The technician confirmed the root cause as cut wiring to the center brake light — a legitimate fault that would produce the type of current anomaly the LCM system is designed to detect. There is no ambiguity here; the alert was valid, and the defect was directly tied to the faulted circuit.

Photo Evidence: Five photos were provided. Photo 1 shows the rear nosebox area of what appears to be an aluminum/galvanized trailer, with wiring harnesses loosely bundled and not neatly secured — while this is not a critical defect, it is worth noting for maintenance standards. Photo 2 shows cut or damaged wiring emerging from a structural gap in the trailer frame, which appears to be the specific defect identified — bare wire conductors are visibly exposed and consistent with the technician's finding of cut wiring. Photo 3 is the Phillips Connect TechAssist (PCT) app screenshot showing the Light Circuit V sensor for asset HV2602152, confirming all five circuits (Red, Green, Yellow, Brown, Black) are marked 'Verified' with no active defects — this is the required app completion screenshot. Photo 4 shows the trailer identification number (read as HV2600-752 or similar when reversed) on what appears to be the front header rail of a dry van trailer — this photo does not directly document a lighting component. Photo 5 shows the rear of the trailer with red clearance/brake lights visible in the frame, but individual lights are not shown illuminated during testing. Notably absent are photos of each light in the RED circuit individually illuminated (e.g., stop/brake lights energized), which is a required element of the troubleshooting procedure.

Vendor Compliance: The vendor partially complied with the LCM troubleshooting procedure. Positive compliance points include: the TechAssist PCT app was used and a completion screenshot was provided showing all circuits verified green, and the defect category provided ('wiring damage' — cut wiring) aligns with the expected feedback categories. However, the vendor fell short in the following areas: (1) no photos were provided of each light in the RED circuit illuminated during testing, which is explicitly required; (2) the nosebox wiring photo (Photo 1) is present but shows disorganized wiring rather than a clean, focused diagnostic image; and (3) no line items (parts or labor charges) were submitted, which makes it impossible to verify material used in the repair. The technician notes are repetitive across Labor Lines 1 and 2, adding no incremental diagnostic value.

Repair Summary: The repair consisted of identifying and fixing cut wiring to the center brake light. The technician confirmed the center brake light is now functioning correctly, and the PCT app verifies all circuits are green post-repair. No parts line items were submitted, so it is unknown what materials (wire, connectors, conduit) were used in the repair or whether compliant/approved components were installed. The absence of parts documentation is a gap that should be flagged for billing and compliance review.

Key Concerns: Three key concerns are flagged: (1) Missing illuminated light photos — the procedure explicitly requires photos of each light illuminated, and none were provided for the RED circuit brake lights; (2) No line items — the absence of parts and labor line items prevents cost validation and compliance verification of repair materials; (3) Wiring condition in nosebox — Photo 1 shows loosely bundled, unsecured wiring harnesses at the rear of the trailer, which while not the primary defect, could indicate a broader wiring management issue that may lead to future faults. The cut wiring shown in Photo 2 raises a secondary concern about whether the damage was accidental or intentional, and whether other wiring in the same run was inspected for similar damage. Overall, the sensor performed correctly, and the repair addressed the root cause, but vendor documentation compliance was substandard.