LCM Alert Validation

Confidence

Failure Category

No Fault Found

Subcategory

No Fault Found

Sensor Verdict: The LCM sensor alert on the GREEN (Right Turn) circuit is assessed as 'Defect Detected' with 82% confidence. The technician's own observation that the light circuit flickered when the 7-way power cord was wiggled strongly supports that a real electrical fault existed on the trailer. A loose or degraded 7-way plug is a well-known cause of intermittent circuit faults that would trigger LCM alerts. The confidence is not higher because there is no TechAssist app verification screenshot confirming the right turn circuit specifically was at fault or was restored to green status after repair.

Photo Evidence: The two photos attached to this work order are both labeled 'TIRES.jpeg' and depict trailer tires — one showing a severely worn, nearly bald tire with cracking, and the other showing significant tread cracking and dry rot. These photos are entirely unrelated to the lighting repair or the LCM alert. There are no photos of any lights illuminated, no nosebox wiring photos, no images of the old or new 7-way plug, and no TechAssist app screenshots. The photo documentation for this work order is completely non-compliant with the LCM troubleshooting procedure. Additionally, the tire condition visible in the photos represents a serious separate safety concern that may warrant its own corrective action.

Vendor Compliance: The vendor (TA) did not follow the LCM troubleshooting procedure as instructed. There is no evidence the Phillips Connect TechAssist (PCT) app was used, no screenshots showing green 'Verified' status on any of the 5 circuits, no photos of individual lights illuminated, and no clear nosebox wiring photo. The technician's notes are written informally and contain numerous spelling/formatting errors, suggesting a rushed write-up. The feedback provided does not align with the structured expected feedback categories outlined in the procedure, though the defect described ('flickering when wiggling power cord') does correspond to the 'damaged connector' subcategory.

Repair Summary: The repair performed was the removal of the old 7-way plug and installation of a new one, with the technician stating all lights were verified operational after the repair. While this is a reasonable and likely correct repair for the symptom described, there are no line items documented — meaning no parts (plug, labor) were formally logged in the work order system. The absence of line items makes it impossible to verify the brand/compliance of the replacement plug or confirm labor was properly billed. It is unclear whether the repair specifically resolved the GREEN (Right Turn) circuit or if the technician simply replaced the connector and performed a general light check without circuit-level verification.

Key Concerns: There are several notable concerns with this work order. First, the attached photos show trailer tires, not lighting components — suggesting the wrong photos were uploaded, raising questions about documentation integrity. Second, the tire condition observed (bald tread, severe cracking/dry rot) is a critical safety defect that should be escalated separately and immediately. Third, no PCT app was used and no TechAssist verification screenshot was provided, leaving the circuit-level repair unconfirmed. Fourth, there are zero line items on the work order, which is abnormal for a repair that required parts (a new 7-way plug). This work order should be flagged for vendor follow-up to obtain proper documentation, and the tire condition should be escalated to the fleet maintenance team at DET3 as a priority safety issue.