LCM Alert Validation

Confidence

Failure Category

No Fault Found

Subcategory

No Fault Found

Sensor Verdict: The LCM system flagged the YELLOW circuit (Left Turn / curbside rear turn) on trailer V509416 at site DTW1. The sensor result is assessed as Inconclusive with 35% confidence in a true no-fault condition. The vendor's claim that no issue exists is undermined by the photographic evidence and complete lack of PCT app verification documentation. The LCM system's alert may well have been valid given the visible disconnected wiring pigtail shown in the only submitted photo.

Photo Evidence: Only one photo was submitted (LIGHTS.jpeg), and it is highly concerning. It shows a light mounting bracket on the underside of the trailer with two exposed wire terminals and a dangling, looped wiring pigtail that appears to be completely unplugged from its connector. This is consistent with a light that is missing or unplugged — a condition that would absolutely trigger an LCM fault on the associated circuit. There are no photos of any illuminated lights, no photos of the nosebox wiring, and no TechAssist app completion screenshot showing green 'Verified' status beside each of the 5 circuits. The photo documentation is critically insufficient and, ironically, appears to contradict the vendor's 'no issue found' conclusion.

Vendor Compliance: The vendor failed to follow the LCM troubleshooting procedure in nearly every respect. The technician note states circuits were 'verified through app,' but no TechAssist app screenshot was provided to corroborate this claim. No photos of illuminated lights were submitted for any of the five circuits. No nosebox photo was provided. The feedback category used ('no defect found confirmed with PCT') is not supported by any documentation, and based on the available evidence, this work order should be categorized as 'no defect found (not confirmed with PCT).' Vendor compliance is rated as non-compliant.

Repair Summary: No repairs were made and no parts or labor line items were submitted. The alerting YELLOW circuit was not repaired. Given that the photo appears to show an unplugged or missing light fixture with exposed wire terminals, it is possible that the actual defect — a disconnected or missing lamp on the left turn circuit — was never addressed. The work order was closed without any corrective action documented.

Key Concerns: The single photo submitted appears to show a dangling, unplugged wiring pigtail at what is likely a marker or turn light position on the underside of the trailer — this is a significant red flag that directly contradicts the vendor's 'no issue' finding. The absence of PCT app verification screenshots, illuminated light photos, and nosebox imagery represents a major documentation failure. This work order should be flagged for vendor non-compliance and the trailer should be re-inspected to confirm whether the visible disconnected wiring was repaired or if a light is genuinely missing from that position. There is a strong possibility the LCM alert was valid and the defect remains unresolved.