LCM Alert Validation

Confidence

Failure Category

No Fault Found

Subcategory

No Fault Found

Sensor Verdict: The LCM sensor issued a RED (Brake) circuit alert for trailer HV2500868, and based on the available evidence, this is assessed as 'Defect Detected' with moderate confidence (62%). The vendor's own notes confirm an ABS light out condition and an initial ATIS Lamp sensor fault, both of which are consistent with a real electrical/lighting problem on the unit. However, the technician stated the cause of the RED circuit alert was 'TBD,' meaning the specific root cause of the brake circuit fault was never definitively identified or documented. The fact that the unit was re-dropped for the ABS light-out supports that a genuine defect existed, though the precise relationship between the original LCM alert and the confirmed defects remains unclear.

Photo Evidence: The provided photos include two sets of TechAssist app screenshots (IMG_2985, IMG_2986, IMG_2989, IMG_2990) showing before-and-after sensor verification states, a photo of what appears to be an amber clearance/marker lamp illuminated on the trailer nose area (TC_08366), a nighttime rear/side view of the trailer showing red reflective tape and marker lights (TC_08367), the trailer's VIN/data plate showing it is a Hyundai Translead unit (TC_08368), and a blurry exterior photo of the trailer (TC_08369). Critically, there are no photos of the RED (Brake) circuit lights illuminated — neither the brake lamps nor the full rear light bar are documented as lit. There is no clear nosebox wiring photo provided. The TechAssist screenshots show that at 6:31 PM, the ATIS Lamp sensor had a 'gateway can't find this sensor' error (red broken-link icon), and multiple sensors were unverified. By 6:41 PM (IMG_2989 and IMG_2990), most sensors show green verified status including ATIS Lamp (verified 6:39 PM), ABS Fault Code (verified 6:32 PM), ATIS Regulator, AirTank, CargoVision, Light Circuit, and TPMS — though Door sensor remained unverified at that time.

Vendor Compliance: The vendor partially followed the LCM troubleshooting procedure. They did use the Phillips Connect TechAssist (PCT) app, which is a positive finding, and they captured before/after screenshots showing sensor verification progress. However, they failed to photograph each light in the RED (Brake) circuit individually while illuminated, which is a core requirement of the procedure. No nosebox wiring photo was provided. The vendor did not select a specific feedback category from the required list (e.g., 'light failure,' 'no defect found confirmed with PCT'), instead providing a vague 'cause TBD' note. The technician's narrative is difficult to parse due to significant typographical errors, making documentation quality poor overall. The re-drop notation for ABS light out is appropriate but should have been captured as a separate defect with its own documentation.

Repair Summary: No formal parts or labor line items were submitted for this work order, and no specific repairs to the RED (Brake) circuit are documented. The vendor's actions appear to have been limited to: (1) re-establishing power to the unit, (2) reconnecting and re-verifying sensors in the TechAssist app, and (3) identifying secondary defects — specifically missing door sensors and an ABS light out. The unit was re-dropped for the ABS light-out repair, indicating that defect was not corrected during this visit. There is no evidence that the original RED circuit alert root cause was physically repaired, replaced, or even located. The sensor re-verification in the app may have cleared the alert without an underlying physical repair being made.

Key Concerns: Several significant concerns are flagged for this work order. First, the root cause of the RED (Brake) circuit LCM alert was explicitly stated as 'TBD' — meaning the vendor closed the job without identifying or fixing the alerting fault, which is a major compliance gap. Second, no parts were billed and no labor line items exist, suggesting minimal hands-on repair work was performed. Third, the ATIS Lamp sensor initially showed a hard fault ('gateway can't find this sensor') that was later cleared — this could indicate a wiring or connection issue that was temporarily resolved by power cycling rather than a permanent fix. Fourth, the required brake circuit light photos are entirely absent. Fifth, the unit was re-dropped for ABS light out, which means the asset left the facility with at least one known unresolved lighting defect. The combination of no root cause identified, no parts replaced, no brake circuit photos, and a re-drop condition suggests this work order should be flagged for vendor follow-up and quality review.