LCM Alert Validation

Confidence

Failure Category

No Fault Found

Subcategory

no defect found (confirmed with PCT)

Sensor Verdict: The LCM system triggered an alert on the BLACK circuit (Clearance / License Plate) for trailer GV2201407 at DEN8. Based on the vendor's inspection findings and TechAssist app screenshots showing all circuits verified green, the sensor alert did not correspond to an active, confirmed defect at the time of repair. Confidence is moderate at 72% — while the PCT app confirms no active fault, a transient or intermittent fault cannot be fully ruled out given the wiring condition observed in photo TC_06155.jpeg.

Photo Evidence: Photos TC_06142.jpeg, TC_06143.jpeg, TC_06148.jpeg, TC_06149.jpeg show amber marker/clearance lights illuminated and functioning. Photos TC_06145.jpeg, TC_06146.jpeg, TC_06150.jpeg, TC_06151.jpeg show red brake/tail lights functioning at the rear. TC_06144.jpeg shows the ABS indicator with a red light lit — this may warrant attention but is unrelated to the LCM BLACK circuit alert. TC_06155.jpeg is a notable concern: it depicts the nosebox with exposed, loosely bundled wiring in a visibly disorganized state, which could be a source of intermittent faults. TC_06154.jpeg shows a hole near the license plate area, which may relate to a missing or damaged license plate light housing. Three PCT TechAssist screenshots (IMG_8242.png showing unverified circuits, IMG_8243.png, and IMG_8244.png showing all verified green) document the troubleshooting progression. However, a dedicated illuminated photo of the license plate light specifically is not clearly present among the submitted photos, leaving a minor gap in circuit-specific documentation.

Vendor Compliance: The vendor largely followed the LCM troubleshooting procedure. They used the Phillips Connect TechAssist app and provided before/after screenshots demonstrating all five circuits reaching 'Verified' status with no defects. Photos of lights illuminated were provided for marker, clearance, and tail/brake positions. A nosebox photo (TC_06155.jpeg) was included. However, the vendor did not provide a dedicated, clearly labeled photo of the license plate light illuminated — which is the specific circuit that triggered the alert — representing a minor documentation gap. The technician's notes are informal and contain several typos but convey the essential findings.

Repair Summary: No repairs were made to the trailer lighting system. No parts were replaced. The line items reflect only indirect labor charges for the LiteCheck procedure and an ATIS troubleshooting inspection, along with a nominal shop supply fee. The alerting BLACK circuit was not repaired because no active defect was confirmed. The work order was closed as 'Active & Healthy' after PCT verification.

Key Concerns: The most significant concern is the nosebox wiring condition visible in TC_06155.jpeg — wires appear loosely bundled, disorganized, and potentially exposed, which is consistent with a source of intermittent LCM faults. TC_06154.jpeg shows what appears to be a hole or missing grommet near the license plate mounting area, which could indicate a previously damaged or missing license plate light component. The ABS fault light visible in TC_06144.jpeg is a separate but noteworthy issue that does not appear to have been addressed or documented in this work order. Finally, the initial TechAssist screenshot (IMG_8242.png) shows all circuits as 'Not Verified,' which confirms the vendor started the app fresh and worked through verification — this is good practice. Overall, while the immediate LCM alert appears to be a no-fault-found outcome, the nosebox wiring condition and potential license plate light housing damage should be flagged for follow-up inspection.