LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Lighting - Damaged Light

Sensor Verdict: The LCM sensor alert on the YELLOW (Left Turn) circuit is confirmed as a valid defect detection with high confidence (92%). The technician's notes explicitly state that the left side midship lamp had 'a couple of LEDs out,' which is a classic partial LED failure condition that the LCM system is designed to detect. The faulted circuit (YELLOW/Left Turn) aligns precisely with the location and function of the repaired lamp — a mid-trailer side turn indicator and clearance lamp on the left side. There is no ambiguity between the alert circuit and the repair location, strongly supporting sensor accuracy.

Photo Evidence: No photos appear to have been submitted with this work order. The LCM troubleshooting procedure explicitly requires photos of each light illuminated, a clear picture of the nosebox wiring, and a TechAssist app completion screenshot showing a green 'Verified' status beside each of the 5 circuits. None of these documentation requirements appear to have been fulfilled based on the available work order data. This is a significant compliance gap and prevents independent visual verification of the defect, the repair quality, nosebox condition, or confirmation of proper circuit restoration.

Vendor Compliance: The vendor (TA) partially followed the LCM troubleshooting procedure. On the positive side, the technician did use the Phillips TechAssist app to test the light circuits post-repair and confirmed all lights were working — this is explicitly noted in the technician comments ('tested the light circuits using Phillips app'). The technician also checked Smart7 power and the seven-way connector, demonstrating a reasonable diagnostic approach. However, the vendor failed to provide required photographic documentation (individual lit lamp photos, nosebox wiring photo, and TechAssist app 'Verified' screenshot), and the feedback provided does not precisely map to one of the required expected feedback categories from the procedure. Overall compliance is rated as incomplete.

Repair Summary: The repair involved removing and replacing one mid-trailer side turn indicator and clearance lamp assembly on the left (midship) side of the trailer. The replacement part used was an 'AUX TURN SIG/MARK LED P3' (line item: $113.99), which is an LED unit. The alerting circuit (YELLOW/Left Turn) was directly addressed by this repair. Additional unrelated work was performed on the trailer — specifically a tire pressure sensor activation (AMAZON PCT SENSOR ACTIVATION), which appears to be a separate maintenance item not related to the LCM alert. Regarding brand compliance, the part description 'AUX TURN SIG/MARK LED P3' does not clearly identify a Phillips/Grote or other approved OEM brand, and the 'AMAZON PCT SENSOR ACTIVATION' reference for tire sensor work raises a flag about sourcing practices. Compliant brand status is marked NO pending confirmation of the lamp assembly manufacturer.

Key Concerns: There are three notable concerns with this work order. First, the complete absence of required photographic documentation is a serious procedural gap — no lit-lamp photos, no nosebox photo, and no TechAssist verification screenshot were provided, making independent audit impossible. Second, the replacement lamp part number ('AUX TURN SIG/MARK LED P3') does not clearly indicate a Phillips-compliant or OEM-approved brand, which warrants follow-up to confirm the correct approved part was used. Third, the inclusion of a tire pressure sensor activation line item (sourced via Amazon) on a lighting LCM work order is irregular and suggests possible scope creep or bundling of unrelated repairs onto this WO — this should be reviewed to ensure proper cost allocation and that the LCM work order was not used as a catch-all for other maintenance items.