LCM Alert Validation

Confidence

Failure Category

No Fault Found

Subcategory

No Fault Found

Sensor Verdict: The LCM system triggered an alert on the RED (Brake) circuit for trailer HV2506389 (visible in TC_07379 and TC_07383). Confidence is moderate at 72% — the PCT TechAssist screenshot shows all circuits marked 'Verified,' which could suggest no active fault at time of inspection, but the nosebox wiring photo raises serious concern that an underlying wiring issue may have been present and not formally documented or repaired.

Photo Evidence: The photo set is reasonably comprehensive but incomplete for full circuit verification. TC_07387 and TC_07388 show both rear stop/tail/turn lights illuminated in red — functioning. TC_07386 and TC_07392 show amber side marker lights functioning. TC_07391 and TC_07386/TC_07914 show clearance/marker lights lit. TC_07389 appears to show a roof clearance light with a missing or damaged lens/grommet. TC_07390 shows what appear to be small red marker lights on the rear roofline illuminated. TC_07384 and TC_07383/TC_07311 show the front upper corners of the trailer. TC_07380 and TC_07382 both show the 7-way electrical connector — TC_07380 notably shows a connector that appears dirty, corroded, or worn, which could contribute to intermittent brake circuit faults. TC_07393 is the most concerning photo: it shows the nosebox interior with what appears to be multiple loose, unprotected wire terminations, absent proper strain relief or organized routing — a condition consistent with wiring damage or incorrect installation. IMG_7445 shows the PCT TechAssist app with all five circuits (Red, Green, Yellow, Brown, Black) marked as 'Verified' with 'No defects' listed. However, this screenshot alone is insufficient to close a defect work order without supporting notes explaining what was done.

Vendor Compliance: The vendor (TA) partially followed the LCM troubleshooting procedure. The PCT TechAssist app was used and a screenshot was captured, satisfying that requirement. Several lights were photographed while illuminated. However, the vendor failed to provide any written notes describing observations, steps taken, or a feedback category from the required list. No line items for parts or labor were submitted. The nosebox wiring photo (TC_07393) was included, which is positive, but the condition visible in that photo demanded documented follow-up that is absent. The troubleshooting is therefore deemed non-compliant.

Repair Summary: No repair line items were submitted and no vendor notes indicate any corrective action was taken. It is unclear whether the wiring anomaly observed in the nosebox (TC_07393) was addressed, left as-is, or considered pre-existing. The alerting RED circuit cannot be confirmed as repaired given the total absence of documentation. The connector condition in TC_07380 also warrants attention but no action is recorded.

Key Concerns: There are several flags on this work order: (1) Complete absence of vendor notes and labor/parts line items despite visible wiring concerns; (2) The nosebox wiring in TC_07393 shows a potentially unsafe and non-standard wiring condition that should have generated at minimum a documented observation; (3) The 7-way connector in TC_07380 shows signs of corrosion or wear that could contribute to intermittent RED circuit faults; (4) The PCT app 'Verified' result may reflect a momentary passing state rather than a resolved root cause; (5) Without documentation, it is impossible to determine if the LCM alert was a true defect that was repaired, a transient fault, or a wiring issue that was overlooked. This work order should be escalated for vendor follow-up and additional documentation.