ELECTRICAL 172 4. IMMOBILIZER CONNECTOR AND PINOUT DETAILS: 5. IMMOBILIZER WORKING PRINCIPLE: The EMS ECU and the immobilizer are paired together by an encrypted secret code called as “AES secret key”, to improve the security of the vehicle. This AES secret key is generated using the vehicle identification number (VIN) and it is unique for each vehicle. Both immobilizer and the EMS ECU are programmed with same secret key for mutual authentication. If any one of EMS or ICU has different/wrong secret key, vehicle will be locked (engine cannot be started). If EMS or Immobilizer is changed in a vehicle, it is required pairing operation (EMS ECU and ICU programmed with same secret key) for proper mutual authentication. The pairing of EMS and Immobilizer can be done through diagnostic tester. Immobilizer comes with two Electronic keys (E-key). These E-keys are learned for that immobilizer and are unique to that Immobilizer and vehicle. The E-key of other vehicles will not work with this immobilizer and vice versa. If anyone of the E-key is lost, it is recommended to approach authorized dealer for new E-key. It is possible to learn new keys with the help of diagnostic tester. (Refer the key learning procedure). If both the keys are lost, it is not be possible to learn the new keys for that immobilizer, as original key is required during E-key learning operation. Immobilizer system status on Starting: During Ignition off, immobilizer status lamp (“Lock” symbol on the instrument cluster) blinks, indicating Immobilizer is awaiting E-key. When the ignition key is turned to the "ON" position, 1. If the status lamp goes OFF indicates that the system is working and the vehicle is unlocked (Engine is ready to start). 2. If the status lamp is continuously ON, there may be something wrong with key or with the immobilizer system. PIN NO DESCRIPTION 1 NC 2 K-line Diagnostics 3 CAN_H 4 GND 5 CAN_L 6 Battery (+12V) 7 NC 8 NC 9 Status Lamp (“lock symbol”) in cluster 10 NC 11 Light guide 12 Ignition (+12V)
RkJQdWJsaXNoZXIy MTIwNTUz