LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Recently Replaced Light

Sensor Verdict: The LCM generated an alert on the BROWN (Marker) circuit for trailer V562717 at site XMD2. Based on the available evidence, the sensor result is rated Inconclusive with low confidence (22%). The technician verbally reported all lights functioning properly, but this finding is entirely unsubstantiated — no PCT TechAssist verification, no photographs, and no circuit-specific diagnostic steps were documented. The absence of any corrective action is consistent with a potential 'no defect found' outcome, but it is equally consistent with a missed or unaddressed defect, leaving the true circuit status unknown.

Photo Evidence: No photos of any kind were attached to this work order. The LCM troubleshooting procedure explicitly required photos of each light illuminated, a clear image of the nosebox wiring, and a TechAssist app screenshot showing green 'Verified' status beside all five circuits. None of these deliverables were provided. Without photographic evidence, there is no way to independently verify the technician's claim that the marker lights or any other lighting circuits were in acceptable condition at the time of inspection.

Vendor Compliance: Vendor compliance with the LCM troubleshooting procedure is poor. The procedure required use of the Phillips Connect TechAssist app to walk through a structured diagnostic sequence and produce a verified output for all five circuits. There is no indication the TechAssist app was used at any point during this visit. The technician's notes are brief and generic ('all lights were working properly'), with no reference to the specific BROWN circuit, no description of diagnostic steps taken, and no feedback provided from the required defect category list. This represents a significant documentation and process failure.

Repair Summary: No lighting-related repairs were made on this work order. The line items include two indirect-charge 'LITE MECHANICAL' entries (which appear to be administrative or overhead charges rather than repairs), a TPMS speed sensor activation under an Amazon PCT Sensor item, standard service labor, a shop supply/environmental fee, and a small amount of lot service hourly labor. None of these items are associated with the BROWN marker circuit or any lighting component. The faulted circuit was not addressed, repaired, or parts-replaced in any documented fashion.

Key Concerns: Several significant concerns are flagged with this work order. First, the work performed does not correspond to the LCM alert — a TPMS sensor activation was billed on a work order generated for a lighting circuit fault, which raises questions about whether this was the correct work order or if unrelated work was rolled in. Second, there is a complete absence of required documentation (photos, TechAssist screenshots, nosebox condition notes), making independent validation impossible. Third, the technician's generic sign-off without circuit-specific language suggests the BROWN marker circuit may not have received focused attention. Fourth, if the marker circuit fault does persist, it will likely generate a repeat alert, potentially indicating either a transient fault, an intermittent wiring issue, or a defect that was not identified during this visit. Fleet reviewers should consider requiring a return visit with full PCT TechAssist documentation before closing this alert.