AI control of electrical connectors and pins — a bent pin passes the inspection desk and shows up at the test bench.

The problem

The defect the test bench never gets to see in time.

The electrical connector is the part that generates the most PPM in many Tier-1 plants — and the reason is not electrical complexity, it is geometry:

1. Bent pin — the insertion hits the pin at a 2° angle. The connector still closes. The electrical bench makes contact. But months later, with vibration and temperature, the contact opens. Customer call.
2. Empty cavity — a pin that was never inserted. The operator does not see it because there are 32 cavities, two of them spares, and the electrical bench does not test those cavities.
3. Crimping outside the window — crimp height is off by 5 microns. The applicator let it through. The electrical bench sees continuity. The day the wire moves, contact is lost.
4. Connector changed for a variant — the new SKU was set up in a spreadsheet that never reached the line, and the bowl feeder was still loaded with the previous part number.

The operator knows it. So does the quality manager. And even so, the classic system (visual + electrical bench) works 99% of the time. That 1% is the OEM's 8D — and in safety electronics, that 8D carries weight.

How it fits the IRIS system

iLEAN does not replace the electrical bench — it offloads the defects it should never have to see.

The problem is not a lack of technology: it is that the defect is seen too late, once time and work are already invested. And that the information the control needs (BOM, variant, crimping window) lives in islands and never reaches the camera in time. iLEAN acts as the putty between the line, the ERP and the test bench.

Edge sees every cavity before final assembly. Connect reads the BOM and the crimping window wherever they live. The agent cross-references with the batch variant and, if something does not add up, holds the part. The person signs — never the other way round.

The three iLEAN pieces applied to electrical connector control:

• Edge — a terminal with machine vision (CNN) and optics calibrated to the family (micro-connector, HV traction, etc.). It segments every cavity, measures pin height and alignment, verifies presence. It fires the actuator in milliseconds. It works without a network.
• Connect — captures the BOM and the crimping window whether they come from the ERP, from the MES, or from the setup sheet for the new SKU. And it captures whatever arrives from outside (an email from the OEM with a spec change, a WhatsApp from the pin supplier with a dimensional change) at second zero.
• Agent — cross-references the BOM, the line's history, the image of the connector and the crimping window. If there is a deviation, it holds the part and assembles the file — photo, batch, shift, operator. The person validates and signs; the carrier does not move on by itself.

See the full IRIS architecture →

Before and after

Visual inspection + electrical bench vs. cross-referenced control with iLEAN

Aspect	Visual + electrical bench	With iLEAN Edge + Connect + Agent
Pin bent <3°	Passes if there is continuity	Caught by geometry >0.3 mm
Empty spare cavity	Not tested by the bench	Verified by image
Crimping outside the window	Passes if the applicator does not flag it	Verified against the batch window
Variant changeover	Setup in a spreadsheet + the operator's memory	New BOM pushed to the Edge in seconds
Error detection	End-of-line electrical bench (late)	Before assembly, in milliseconds
PPAP/IATF file	Rebuilt by hand, weeks	Per-batch dossier, automatic, with a photo of the pins

Impact estimate

Impact estimate for your plant — to be validated with your numbers.

The block below is an estimate to be validated with the specific data of your plant. We put it forward so the committee has an order of magnitude; we refine it during the diagnostic.

• Tier-1 electrical connector plant (ECU, EV, HV), 1-2 priority families carrying most of the accumulated PPM.
• Edge pilot on the carrier ahead of final assembly (camera + calibrated optics + actuator + integration with the ERP/MES BOM). First value expected within a few weeks.
• Indicative payback between 4 and 9 months, depending on the starting PPM and the average cost of downstream rework/scrap.
• Expected reduction in pin/sequence defects of ≥30% in the first quarter and ≥80% by the sixth month, depending on the family's pareto. The hard lever is a single customer call avoided and the load taken off the electrical bench.

The industry standard and the reliability of anchored AI

The quality standard in automotive is of the order of 25 parts per million defective ^[1]. A connector with a bent pin in every 40,000 is out of range. A camera with a CNN does see it.

On reliability: hallucination is a problem of free generation, not of anchored tasks. In tasks where the AI merely recontextualizes a piece of data (reading the cavity and comparing it with the BOM), the best models brought error below 1.5% ^[2]. And even so, what is critical is never decided alone: iLEAN holds the connector and the person signs.

^[1] The 25 PPM standard in automotive quality — Symestic.

^[2] OpenAI paper “Why Language Models Hallucinate”, 2025 — on the reliability of AI in anchored tasks.