Sensor Verdict: The LCM system generated an alert on the RED (Brake) circuit for trailer HV2200496 at site MTN2. Based on the repair evidence, the sensor correctly identified that a lighting defect existed on the trailer — a top-right rear clearance light and a license plate light were both found to be non-functional. However, the confidence in a direct RED circuit fault is moderate (82%) because neither a clearance marker light nor a license plate light is a component of the brake circuit. It is possible the LCM detected a resistance or load anomaly that was indirectly influenced by the failed components sharing a ground or wiring path, but this cannot be confirmed without TechAssist app data.
Photo Evidence: No photos were provided with this work order. Per the LCM troubleshooting procedure, the vendor was required to photograph each light illuminated, provide a clear picture of the nosebox wiring, and include a TechAssist app completion screenshot showing green 'Verified' beside each of the 5 circuits. None of these documentation requirements were met. The absence of photos makes it impossible to independently verify the condition of the brake circuit lamps, the nosebox, or the final state of all repaired lights. This is a significant documentation gap.
Vendor Compliance: The vendor (TA, tech MB) did not follow the prescribed LCM troubleshooting procedure. There is no indication the Phillips Connect TechAssist (PCT) app was used at any point during diagnosis or post-repair verification. No circuit-level verification screenshots were provided, and no photos of any kind were submitted. The technician did perform circuit testing per the authorization complaint and identified two failed lights, which reflects reasonable diagnostic effort, but the lack of PCT app usage means the full 5-circuit verification was not completed and the RED circuit cannot be confirmed as resolved or cleared. Feedback category alignment is also weak — the technician's notes describe a 'light out' scenario consistent with 'light failure,' but this was never formally categorized.
Repair Summary: Two parts were replaced: a license plate mount with light (LT-style marker, $16.99) and a marker/clearance light (LT19Y, $3.99). Both are categorized under 'Lamp - marker' in the lighting system. The LT19Y marker light part number is consistent with an incandescent-style clearance/marker lamp. Neither replacement part addresses the RED (Brake) circuit directly. Labor was billed at 2.6 hours at $75.00/hr under a 'Warranty' failure code, plus a shop supply/environmental fee of $13.61. The technician made two trips to the site — one to replace the clearance light and a second after picking up the license plate light — indicating the repair was completed in stages. No non-compliant or aftermarket brand flags are apparent from the part descriptions provided.
Key Concerns: The most notable concern is the circuit mismatch — the LCM alert was on the RED (Brake) circuit, but the repairs made were to a clearance light and a license plate light, neither of which belong to the brake circuit. This raises the question of whether the brake lamps were ever directly inspected or verified. Without PCT app screenshots, there is no confirmation that the RED circuit was tested, cleared, or found to be functioning correctly. Additionally, the complete absence of photos is a compliance failure that prevents any independent quality review. For a circuit-level LCM alert, it is expected that the brake lamps themselves (stop lamps, combination tail/stop lamps) would be explicitly tested and documented. If the RED circuit remains unverified, there is residual risk that a brake lamp defect still exists on this trailer. A follow-up verification or re-inspection may be warranted.