LCM Record — HV2300913

Defect Detected

88%

Confidence

Failure Category

Lighting

Subcategory

Smart7 - Wiring in Smart7

Approved by Kevin Eisentrout

Work Order Details

Asset ID

HV2300913

Site

PDX9

Vendor

COX

Circuit

YELLOW (Left Turn)

Date Actioned

2026-04-30T21:03:30+00:00

Week

amz-id

02975756

Relay Garage

Open in RG →

AI Deep Dive Analysis

Sensor Verdict: The LCM sensor alert on the YELLOW (Left Turn) circuit is validated as a true positive with high confidence (88%). The technician's own notes confirm that when the YELLOW circuit was activated, the left turn signal functioned but all other lights illuminated simultaneously — a classic symptom of a short circuit. The root cause was identified as a failed brake strobe light, which, when non-functional, caused current to backfeed through the circuit in a manner the LCM sensor correctly flagged. After replacing the strobe, the left turn signal operated properly, directly confirming the sensor's alert was legitimate.

Photo Evidence: No photos were provided or attached to this work order. The LCM troubleshooting procedure explicitly requires photos of each light illuminated per circuit, a clear photo of the nosebox wiring, and a TechAssist app completion screenshot showing a green 'Verified' status beside each of the five circuits. None of these deliverables are present. This is a significant documentation deficiency and represents non-compliance with the required procedure regardless of whether the underlying repair was sound.

Vendor Compliance: The vendor (COX) did use the Phillips Connect TechAssist app and followed a logical diagnostic sequence — starting with the YELLOW circuit, identifying the anomaly, isolating the strobe as the cause, replacing it, and then cycling through all remaining circuits (RED, GREEN, BROWN, BLACK) to confirm normal operation. This procedural approach aligns with the intent of the LCM troubleshooting protocol. However, the vendor failed to provide: (1) photos of each illuminated circuit, (2) a nosebox wiring photo, (3) a TechAssist app completion screenshot with green 'Verified' status, and (4) a specific feedback category from the required list. The labor line descriptions are informal and lack the structured reporting expected. Overall, troubleshooting is marked as non-compliant due to missing documentation deliverables.

Repair Summary: The repair consisted of removing and replacing a faulty brake strobe light, which was the root cause of the short detected on the YELLOW circuit. The technician confirmed post-repair that the left turn signal operates correctly and that all other circuits (RED, GREEN, BROWN, BLACK) are functioning properly. The alerting circuit was directly addressed and resolved. No specific part number, brand, or quantity beyond a placeholder line item ('Details to Follow') was recorded, making it impossible to assess brand compliance. The line item is listed as a placeholder, which is unacceptable for a completed work order.

Key Concerns: Several issues warrant follow-up: (1) Zero photo documentation — this is the most critical gap; without photos, there is no independent verification of the repair or circuit condition. (2) Placeholder line item — the parts/labor entry reads 'Placeholder - Details to Follow,' which should not exist on a completed work order dated 2026-04-30; the vendor must submit finalized billing details. (3) Brand compliance unknown — without a part number or brand name for the replacement strobe, compliant brand verification is impossible. (4) Informal technician notes — while the narrative is sufficient to understand what happened, it does not align with the structured feedback categories required by the procedure (e.g., the correct category here would be 'light failure'). Recommend requiring the vendor to submit photos, a finalized line item, and a TechAssist completion screenshot before closing this work order.

LCM Current Readings — All Circuits

RED (Brake)

GREEN (Right Turn)

YELLOW (Left Turn) ALERTING

BROWN (Marker)

BLACK (Clearance / License Plate)

Vendor WO Notes

Yard Location Update: ParkingSlip - PS202 --- RO#301912276 Labor Line 1: COMPLAINT - SMART BOX DETECTED SHORT IN LIGHTING SYSTEM CAUSE- UNKNOWN CORRECTION- FIRST I ACTIVATED THE APP AND CONNECTED TO THE TRAILER, NEXT I FOLLOWED THE PROCEDURE AND STARTED WITH THE YELLOW CIRCUIT ONCE ACTIVATED LEFT TURN SIGNAL WORKED BUT ALL THE OTHER LIGHTS WERE ON TO THERES A SHORT, DIAG AND INSPECTED SYSTEM, BRAKE STROBE LIGHT WASNT WORKING , NEEDS REPLACED FIRST AND RE TEST, BEFORE PROCEEDING THIS NEEDS TO BE REPLACED AND RE TESTED Labor Line 2: COMPLAINT - SMART BOX DETECTED SHORT IN LIGHTING SYSTEM CAUSE- STROBE LIGHT CORRECTION- REMOVED AND REPLACED AND RE TESTED, LEFT TURN SIGNAL IS WORKING PROPERLY NOW Labor Line 3: COMPLAINT - SMART BOX DETECTED SHORT IN LIGHTING SYSTEM CAUSE- UNKNOWN CORRECTION- NEXT TESTED RED CIRCUIT EVERYTHINGS WORKING PROPERLY, NEXT GREEN CIRCUIT AND EVERYTHING IS WORKING PROPERLY , NEXT TESTED THE BROWN CIRCUIT AND EVERYTHING IS WORKING PROPERLY AND LASTLY TESTED THE BALCK CIRCUIT SND EVERYTHING IS WOROKG PROPERLY --- PV --- V A/H