Immobilizer System Outline

- The immobilizer system prevents the engine from starting when anything other than the programmed ignition key is used. (even if the ignition switch is short-circuited. If unprogrammed key is used the PCM will cut the fuel and ignition.)
- The system components are:
- Key with transponder
- Security light
- Coil
- Immobilizer unit
- PCM

- The engine will start only if the key with the corresponding identification number is recognized and verified by the PCM and immobilizer unit.
- The engine can be started using the key, which has and ID number registered in its transponder and which uses an algorithmic verification method.
- *Code word is input into the immobilizer unit and PCM, and the vehicle will not start if the code word is not newly registered when parts (i.e. PCM) are replaced.
- *The procedure for registering the ID number and the procedure for inputting the code word are different according to the parts being replaced and the number of the registered keys.

*: These are very important outlines for the immobilizer system.