LCM Alert Validation

Confidence

Failure Category

No Fault Found

Subcategory

No Fault Found

Sensor Verdict: The LCM sensor issued an alert on the GREEN (Right Turn) circuit for trailer V569889 at site CMH2. Based on the vendor's notes, the outcome is classified as 'No Fault Found,' with the technician claiming all circuits were confirmed good using the Phillips Connect app. Confidence in the sensor result is rated low-to-moderate (35%) — not because the sensor is necessarily wrong, but because the lack of photographic evidence and the nature of the billed line items leave the no-fault determination unverifiable. LCM alerts on a specific circuit without a corresponding confirmed defect can indicate an intermittent fault, a recently self-corrected issue, or a procedural miss by the vendor.

Photo Evidence: No photos were provided with this work order. The LCM troubleshooting procedure explicitly requires photos of each illuminated light in the circuit and a clear image of the nosebox wiring, as well as a TechAssist app screenshot showing a green 'Verified' status beside each of the 5 circuits. None of these documentation requirements were met. Without photographic evidence, there is no way to confirm that the GREEN (Right Turn) circuit — or any other circuit — was actually inspected and found operational. This is a significant documentation gap.

Vendor Compliance: The vendor (TA) was non-compliant with the prescribed LCM troubleshooting procedure. While the technician verbally referenced using the Phillips app ('USED PHILLIPS APP TO CONFIRM'), no TechAssist completion screenshot was submitted, no per-light photos were provided, and no nosebox photo was included. The required feedback categories (e.g., 'no defect found (confirmed with PCT)') were not formally used in the notes. The technician's notes are generic and lack specificity about which circuits were tested, what readings were observed, or what steps were taken during the inspection. This level of documentation does not meet the standard required for LCM work orders.

Repair Summary: No repairs were made to the lighting system. The line items billed are entirely unrelated to the LCM alert or any lighting work: a tire/speed sensor activation (AMAZON PCT SENSOR ACTIVATION), a small labor charge (0.1 hr standard service), a shop supply fee, and 0.5 hours of lot service hourly labor. None of these charges correspond to lighting diagnosis, lamp replacement, wiring repair, or connector service on the GREEN circuit. The presence of a tire sensor activation charge on what should be a lighting-focused work order is anomalous and suggests the vendor may have bundled unrelated work or used the wrong work order for billing purposes.

Key Concerns: Several red flags are present in this work order. First, the complete absence of required photos and the TechAssist verification screenshot undermines any confidence in the no-fault finding. Second, the billed line items are wholly unrelated to trailer lighting, raising questions about whether a proper LCM inspection was performed at all or whether charges were misapplied. Third, the technician's notes, while mentioning the Phillips app, are vague and do not describe any specific diagnostic steps taken on the GREEN (Right Turn) circuit. This work order should be flagged for vendor follow-up: TA should be required to submit the TechAssist app verification screenshot, photos of all illuminated lights, and a nosebox photo before the no-fault determination can be accepted. The unrelated billing charges should also be reviewed and reconciled.