LCM Alert Validation

Confidence

Failure Category

No Fault Found

Subcategory

No Fault Found

Sensor Verdict: The LCM sensor flagged the RED (Brake) circuit on trailer HV2503860, and the evidence strongly supports that a genuine defect existed. The technician found all light circuits inoperative, consistent with a failed 7-way plug that would interrupt power to all circuits simultaneously, including the brake circuit. Confidence is rated at 85 because the root cause (bad 7-way plug) plausibly explains the sensor alert, though no TechAssist app confirmation was provided to definitively verify the sensor reading.

Photo Evidence: Two photos were submitted, both showing a Phillips STA-DRY 7-way plug/socket assembly mounted on what appears to be the trailer nose area. The photos depict the newly installed or existing plug connector in what appears to be serviceable condition — there are no visible burned, corroded, or physically broken components shown in the submitted images. Critically, no photos were provided showing individual lights illuminated (brake, turn, marker, etc.), no nosebox wiring photos were submitted, and no TechAssist app screenshot showing green 'Verified' status for any of the 5 circuits was included. The photo documentation is substantially insufficient relative to the required procedure.

Vendor Compliance: The vendor did not follow the LCM troubleshooting procedure. There is no indication the Phillips Connect TechAssist app was used at any point during diagnosis or verification. Required photos of each light illuminated in the circuit were not taken. No clear nosebox wiring photo was submitted. No TechAssist app completion screenshot showing green 'Verified' status beside each of the 5 circuits was provided. The technician's feedback category — while consistent with 'damaged connector' — was not explicitly framed using the defined expected feedback categories. Overall vendor compliance with the prescribed procedure is poor.

Repair Summary: The repair consisted of removing the defective 7-way plug and installing a new Phillips STA-DRY 7-way connector, which is a compliant Phillips-brand component. The technician noted that all lights were verified operational after installation. Because the 7-way plug is the upstream connection point for all trailer lighting circuits, its replacement would logically address the RED (Brake) circuit alert as well as any other circuit faults. No specific parts line items were submitted, which is a documentation gap. The repair itself appears appropriate and targeted at the correct root cause.

Key Concerns: The most significant concern is the complete absence of required documentation — no TechAssist app screenshots, no illuminated light photos, and no nosebox photos. Without these, there is no independent verification that all 5 circuits are fully operational post-repair or that the LCM system has been reset and re-validated. The missing line items also raise a question about whether parts were billed through a separate channel or omitted. Additionally, while the 7-way plug replacement is a reasonable repair, the lack of PCT confirmation leaves open the possibility that additional circuit-level issues remain undetected. Vendors should be reminded of the full documentation requirements per the LCM troubleshooting procedure.