LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Lighting - Damaged Light

Sensor Verdict: The LCM BLACK circuit alert (Clearance/License Plate) is assessed as Defect Detected with moderate-to-good confidence (62%). The vendor's own notes state 'the lamp did not come on,' which directly corroborates the LCM sensor's fault signal on the BLACK circuit. Additionally, the discovery of two disconnected LCM sensors (ATIS lamp and door sensor) suggests the trailer's monitoring system was in a degraded state, lending further credibility to the original alert rather than dismissing it as a false positive. The confidence penalty stems from incomplete documentation and the absence of a confirmed TechAssist 'Verified' screenshot showing all five circuits green.

Photo Evidence: Two photos were submitted. Photo 1 shows the front upper corner of Amazon Prime trailer WV2502378 — this is irrelevant to the BLACK (Clearance/License Plate) faulted circuit and does not document any light illuminated or any defect. It appears to have been taken to capture the trailer ID, not to document a lighting defect or repair. Photo 2 shows an Indiana license plate (PE3009X) with a license plate lamp bracket visible to the left side; the lamp aperture appears to show a faint glow or reflection, but it is ambiguous whether the lamp is fully functional or partially lit. Critically, there are no photos of the clearance lights illuminated, no nosebox wiring photo, and no TechAssist app screenshot showing green 'Verified' status for all five circuits. The photographic documentation is substantially non-compliant with the required procedure.

Vendor Compliance: The vendor (TA) did use the Phillips Connect TechAssist app, which satisfies one procedural requirement. However, compliance with the full LCM troubleshooting procedure is poor. The vendor did not provide photos of each light in the circuit illuminated, did not provide a clear nosebox wiring photo, and critically did not provide a TechAssist app completion screenshot showing green 'Verified' beside each of the five circuits. The technician notes are fragmented and incomplete (e.g., 'NO OTHER ISSUE FOUND WITH THE LIGHS,' 'JOB COMPLETE THANK YOU MA' — suggesting the notes were truncated or hastily entered). The vendor did not map their findings to the defined feedback categories as instructed. The note about the pass-side front marker light not being secured properly is related to the clearance/marker circuit area but was not formally repaired per the line items.

Repair Summary: No repairs were completed on this work order. There are zero line items for parts or labor, and the vendor's narrative does not describe any corrective action taken — only diagnostic observations. The license plate lamp that 'did not come on' was identified but not replaced or repaired. The two disconnected LCM sensors (ATIS lamp and door sensor) were identified but not reconnected or addressed. The unsecured front pass-side marker light was noted but no securing repair is documented. This work order was closed as 'Job Complete' despite no documented corrective actions, which is a significant concern.

Key Concerns: (1) No repairs made despite confirmed lamp failure — the vendor stated 'the lamp did not come on' yet closed the WO with no line items and no corrective action, which is a serious documentation and accountability gap. (2) Two LCM sensors found disconnected (ATIS lamp and door sensor) — these were not reconnected per the notes, meaning the trailer's monitoring capability remains compromised. (3) Photo documentation is non-compliant — no illuminated circuit photos, no nosebox photo, no TechAssist verification screenshot. (4) Truncated technician notes suggest the work order may have been submitted prematurely or incompletely. (5) The front marker light security issue was noted but not repaired and not formally logged as a defect category. This work order should be flagged for vendor follow-up and potentially reopened to complete the lamp replacement and sensor reconnections.