Autoliv 627844200C – SRS Airbag Control Module for Automotive Safety Platforms

The Autoliv 627844200C is a safety-rated SRS control unit designed to monitor crash sensors and deploy pyrotechnic devices (airbags and pretensioners) with millisecond-level precision. From my experience with Autoliv modules, this model sits in the typical 12 V vehicle electronics architecture, communicates over CAN, and integrates internal acceleration sensing for robust decision logic. It’s the kind of ECU that quietly prevents failures: stable under vibration, tolerant of voltage spikes, and traceable for quality audits.

You might notice that teams value it most for platform compatibility and serviceability—drop-in replacement is usually straightforward if you’re matching harness pinouts and mounting points. For maintenance depots and reman partners, that predictability saves hours during diagnostics and commissioning.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week if in stock; no more than 1 month at the latest
• Payment: 50% advance; full payment prior to delivery
• Express options: FedEx, UPS, DHL
• Process: Confirm part number and vehicle application → issue PI with availability → receive advance → functional test and packing → balance payment → dispatch with tracking

Key Features

• Automotive-grade robustness – Designed for vibration, shock, and electrical transients typically seen on 12 V systems.
• Integrated crash sensing – Internal accelerometer plus external satellite sensor channels for reliable multi-point detection.
• Deterministic deployment logic – Redundant diagnostics and squib monitoring to ensure airbags/pretensioners fire only when conditions are met.
• CAN-based diagnostics – Supports standard CAN messaging; technicians can access fault codes and event data through UDS-style services in many cases.
• Drop-in serviceability – Compact aluminum housing and keyed multi-pin connector simplify replacement within the same vehicle platform.
• Traceability – Labeling typically includes serial/lot data, helping with PPAP, recall traceability, and audit trails.

Technical Specifications

Application Fields

– Passenger vehicles and light commercial platforms using 12 V SRS architectures
– OEM production lines and Tier-1 service networks requiring like-for-like module replacements
– Fleet refurbishment, accident repair centers, and remanufacturing facilities
– Research and test labs simulating deployment logic and crash-sensing behavior

A recent customer running a mixed-brand fleet replaced a batch of legacy ECUs with 627844200C units across two model years. The notable win was reduced nuisance fault codes—diagnostics settled faster, and they cut calibration time per vehicle by roughly 30% compared with their previous stock.

Advantages & Value

• Reliability under real-world conditions – Autoliv’s SRS controllers are built for harsh shock profiles and electrical noise; in most cases, failure rates remain very low post-installation.
• Compatibility – Works within standard 12 V CAN-based architectures, easing integration on platforms already using Autoliv sensors and squibs.
• Cost control – Short lead times and predictable fit reduce vehicle downtime; fewer diagnostic callbacks typically mean lower service overhead.
• Support for audits – Module labels and traceability data simplify compliance reporting and PPAP documentation.

Installation & Maintenance

• Environment – Install inside cabin on a flat, rigid surface. Maintain ventilation around the housing; avoid water ingress and high-heat zones.
• Wiring – Disconnect the battery before work. Use OEM-grade harnesses; do not probe squib lines with standard multimeters. Observe ESD precautions.
• Orientation & torque – Mount per arrow/orientation mark. Follow OEM torque values to ensure correct crash sensing behavior.
• Commissioning – After installation, perform CAN diagnostics, clear DTCs, and run seat/occupant calibration if applicable.
• Routine checks – Visual inspection of connectors and grounds during scheduled services. Firmware updates only via approved tools when specified by the vehicle OEM.

Supporting Components (Typical)

• Autoliv satellite crash sensors (front/side) on dedicated input channels
• Seatbelt pretensioners and airbag inflators using compatible squib connectors
• Occupant Classification System (OCS) and seatbelt buckle switches via CAN/LIN or discrete inputs
• OEM harness assemblies with sealed multi-pin connector interface

Quality & Certifications

• Developed to ISO 26262 principles for SRS applications (ASIL-D targets on safety functions)
• Manufacturing under IATF 16949 quality systems
• RoHS and REACH compliant materials, typically used in passenger vehicle interiors
• 365-day warranty coverage from delivery