LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Recently Replaced Light

Sensor Verdict: The LCM system generated an alert on the BLACK circuit, which governs Clearance and License Plate lights on trailer WV2500576 at site DEN3. The sensor result is classified as Inconclusive with a confidence level of 35%. While the technician verbally states all lights are functional, there is no corroborating photographic evidence or PCT TechAssist app verification to confirm or deny the original alert. The absence of documentation makes it impossible to validate whether the sensor correctly identified a transient fault, a real defect that self-resolved, or experienced a false positive.

Photo Evidence: No photos were attached to this work order. The LCM troubleshooting procedure explicitly requires photos of each light illuminated, a clear image of the nosebox wiring, and a TechAssist app completion screenshot showing a green 'Verified' status beside each of the 5 circuits. None of these deliverables were provided. This is a significant compliance gap that renders the technician's verbal 'no issues found' conclusion unverifiable. Without visual confirmation, it is not possible to assess the condition of the clearance lamps, license plate light, nosebox connectors, or wiring harness.

Vendor Compliance: Vendor TA did not comply with the LCM troubleshooting procedure. The technician references using the 'Phillips app' in their notes, but provides no screenshot or documentation of a completed TechAssist session showing all 5 circuits verified as green. The required structured feedback from the defined category list (e.g., 'no defect found (confirmed with PCT)') was not provided. Instead, the notes are informal and lack any specificity about which lights were tested, what readings were observed, or what the PCT app displayed. This falls well short of the documented expectations for LCM-triggered work orders.

Repair Summary: No repairs were made to the BLACK (Clearance/License Plate) circuit. The line items on this work order are entirely unrelated to the alerting circuit — they include a tire pressure sensor activation (AMAZON PCT SENSOR ACTIVATION), minimal standard service labor ($109.90), two indirect aftertreatment/engine charges, and a shop supply/environmental fee of $0.69. None of these line items address lighting components, wiring, connectors, or nosebox hardware. It is unclear why these charges appear on an LCM-generated lighting work order, raising questions about whether the correct work order was used or whether unrelated repairs were bundled.

Key Concerns: Several red flags are present in this work order. First, the complete absence of photos and PCT verification screenshots is a major documentation failure that makes the 'no defect found' conclusion unverifiable. Second, the line items are entirely mismatched to the faulted circuit — tire sensor activation and aftertreatment charges have no relevance to a clearance/license plate light alert. Third, the technician's language ('PHILLI PS APP' likely meaning Phillips Connect) suggests some tool usage, but no proof was captured. Fleet reviewers should consider requiring this vendor to return to the unit with proper documentation, or flagging this WO for non-compliance. The LCM alert remains unresolved from a documentation standpoint, and repeat alerts on this circuit should be monitored closely.