LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Lighting - Failed Light

Sensor Verdict: The LCM sensor alerted on the GREEN circuit, corresponding to the Right Turn signal. Given that the vendor found and replaced a worn seven-way receptacle — a component whose degradation is well-known to cause multiple circuit failures simultaneously — there is reasonable grounds to believe a real defect existed on this trailer at the time of the alert. However, the vendor's documentation exclusively references the brake light circuit and never confirms whether the right turn/GREEN circuit was independently tested, verified, or found defective. Confidence is moderate (62%) because the seven-way replacement could plausibly have resolved the turn signal issue as a downstream effect, but this was never confirmed.

Photo Evidence: No photos were described or referenced in the vendor notes as being attached to this analysis, and critically, there is no TechAssist app completion screenshot showing green 'Verified' status beside each of the five circuits. The vendor notes state that pictures were taken during the PCT light check and of the brake lights working, but none of these are available for review here. Without visual confirmation of each illuminated circuit — particularly the GREEN (Right Turn) circuit — and without a clear nosebox wiring photo, the photo documentation must be assessed as non-compliant with the LCM troubleshooting procedure.

Vendor Compliance: The vendor did not follow the prescribed LCM troubleshooting procedure. There is no indication that the Phillips Connect TechAssist app was used, no TechAssist completion screenshot was provided, and the vendor's feedback does not map to any of the defined expected feedback categories in a clear or structured way. The notes are informal and focus entirely on the brake light circuit, with no mention of the alerted GREEN/Right Turn circuit. While the vendor did tighten nuts inside the Smart Seven box and verified wiring, these actions do not substitute for the required TechAssist-guided workflow. PCT app use is assessed as false.

Repair Summary: The vendor removed and replaced the seven-way receptacle (part: 16 726 7 WAY RECEPT, $35.99) and performed associated labor. The repair is categorized under Smart 7 / damaged connector, which is appropriate given the worn seven-way finding. The seven-way replacement is a legitimate and commonly required repair. However, the repair was performed for the brake light circuit failure, not explicitly for the GREEN (Right Turn) circuit that triggered the LCM alert. There is no documentation confirming that the right turn circuit was tested post-repair and found to be functioning. Additionally, a PCT sensor activation line item appears on the work order, suggesting some sensor-related activity occurred, but there is no elaboration on this in the notes.

Key Concerns: The most significant concern is the circuit mismatch — the LCM alerted GREEN (Right Turn), but all repair activity and documentation references the brake light circuit only. This could indicate the vendor misidentified the primary fault, addressed a secondary symptom, or simply did not understand the LCM alert. The absence of TechAssist app usage and the lack of a verified five-circuit screenshot are serious procedural gaps. The vendor notes also contain apparent transcription artifacts (e.g., 'SEV ENW WAY,' 'S EVEN WAY,' 'THIR D BRAKE LIGHT') suggesting the notes may have been auto-corrected or reformatted and may not fully capture the technician's findings. The note about the trailer lacking a third brake light is useful context but not directly related to the alerted circuit. This WO should be flagged for follow-up to confirm the GREEN circuit is functioning correctly.