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Gasoline Direct Injection

Gasoline Direct Injection: LIN is a low-cost single-wire master-scheduled network and LIN 2.x has a maximum data rate of 20 kbit/s. The page also includes a worked example and measurement sequence.

6 concrete technical facts1 worked example2 sources

Technical frame

Gasoline Direct Injection: LIN is a low-cost single-wire master-scheduled network and LIN 2.x has a maximum data rate of 20 kbit/s. The page also includes a worked example and measurement sequence.

The technical values here expose the standard, protocol or physical relationship directly; model-specific service values are linked through the matching model/variant dossier.

The goal is not only to define the term but to let the reader calculate and interpret what the data means in a scan, scope or physical test.

Concrete technical facts

  • LIN is a low-cost single-wire master-scheduled network and LIN 2.x has a maximum data rate of 20 kbit/s.
  • The master sends the header and the addressed slave sends the response field.
  • A frame includes a Protected Identifier (PID), data and checksum.
  • Enhanced checksum includes the PID while classic checksum remains defined for certain frame types.
  • LIN dominant/recessive levels are referenced to vehicle supply and should not be interpreted like differential CAN.
  • If a slave does not respond, power/ground, wake-up, schedule table and PID matching are separate checks.

Worked example

  • Timing example: at 20 kbit/s one bit is about 50 µs, which gives a practical oscilloscope time-base starting point for edge and delay checks.

Measurement and verification sequence

  • Observe idle and dominant levels with a scope.
  • Confirm that the master header is present.
  • Check whether the slave response follows the PID.
  • Verify supply, ground and wake-up conditions.

Fault-separation logic

  • Is a valid command present and are power/ground/network healthy?
  • Does feedback follow the command?
  • Does an independent physical measurement confirm the output?
  • Is the fault limited to a specific temperature/load/speed condition?
  • Does the result remain stable when the original condition is repeated after repair?

Technical sources

  1. Otodünyam Teknik Editoryal Sözlük R2
  2. ISO standards catalogue · road vehicles

Continue investigating

Model-specific real technical data · Measurement references · Technical diagnostic atlas