Overview
ISO 17987-6:2016 - "Road vehicles - Local Interconnect Network (LIN) - Part 6: Protocol conformance test specification" defines the protocol conformance tests for LIN communication controllers. The standard specifies test cases, test-system requirements and timing/measurement conventions to verify that an Implementation Under Test (IUT) conforms to the LIN protocol behavior required by ISO 17987‑2 and ISO 17987‑3. A primary objective is reproducibility: when a test suite and test system comply with ISO 17987‑6:2016, test results should be identical across different test setups.
Keywords: ISO 17987-6, LIN protocol conformance test, Local Interconnect Network, LIN conformance, automotive LIN testing.
Key technical topics and requirements
- Scope and test architecture: Definitions of IUT roles (IUT as master / IUT as slave), test classification and mandatory preconditions.
- Test system requirements: Precise generation of LIN frames, bit timing measurement, header/response handling and sleep/wake verification to ensure consistent execution across different test systems.
- Timing parameters: Tests for break field length, break delimiter, sync byte verification, header length and bit-rate tolerance including synchronized and unsynchronized slave behavior.
- Frame and data validation: Checksum handling (classic and enhanced), unused/reserved bits and frames, detection of incomplete/unknown frames.
- Error and robustness tests: Bit errors, framing errors, checksum corruption (inversion/carry), communication robustness and error signaling.
- Event-triggered frames and collision handling: Tests for event triggered frames, collision resolving and related error conditions.
- Schedule and timing management: Schedule table timing, jitter verification, sample point tests and initialization times.
- Sleep/wake and power mode tests: Go-to-sleep commands, wake-up signaling, blocks of wake-up signals and behavior after power loss or LIN bus faults.
Practical applications and who uses this standard
ISO 17987-6:2016 is used by:
- Automotive ECU manufacturers and suppliers to validate LIN controllers and ensure interoperability.
- Test tool and instrumentation vendors who implement LIN conformance test suites and automated test systems.
- Compliance and certification labs performing standardized protocol conformance testing.
- Quality assurance and system integrators verifying LIN networks in vehicle subsystems (body electronics, sensors, actuators).
Using this standard helps reduce integration defects, accelerates supplier validation, and supports regulatory or customer conformance requirements for LIN-based in-vehicle networks.
Related standards
- ISO 17987-2 - LIN physical and data link layer definitions (referenced by Part 6 for conformance).
- ISO 17987-3 - LIN frame and signal specifications (referenced for test expectations).
- Other parts of the ISO 17987 series for broader LIN protocol and application-layer guidance.
For LIN protocol conformance testing, ISO 17987-6:2016 is the definitive reference to ensure reproducible, standardized validation of LIN controllers and implementations.
Open preview (PDF)Road vehicles — Local Interconnect Network (LIN) — Part 6: Protocol conformance test specification