HEXA

ELECTRICAL 184 “TATA_Antitheft_Immobilizer” option.  Now click on the “Pair with EMS ECU” button and follow the instructions. B. For replacing only EMS-ECU Unit:  Use UV diagnostic tool for Vehicle and go to ECU replacement section of EMS ECU.  Now click on the “ Pair with IMMO ” button and follow the instructions C. For replacing both EMS-ECU and ICU Units:  Start the Diagnostic software and select “TATA_Antitheft_Immobilizer” option.  Now click on the “ Write VIN No ” button and enter the VIN number. Caution: As AES key is based on VIN no, proper care should be taken while reading and writing of VIN No. & it cannot be changed once it is written into the ICU. Any irregularity in the above procedure may leads to vehicle immobilization, in spite of new Immobilizer.  Now click on the “Pair with EMS ECU” button and follow the instructions.  After this stage, come out of the “Immobilizer” option and go to “EMS-ECU” option.  Click on “Pair with IMMO” option and follow the instructions. D. Checking Pairing status: In the EMS-ECU software select “Engine Parameter 1”, then select “Electronic key” option and click START. One window will pop-up & shows below mentioned options. This window gives the current status of immobilizer system. i.e.  Immo Programmed: Immobilizer enabled.  Vehicle Not Locked: Vehicle ready for start.  Vehicle locked: Vehicle will not start  Immo code programmed and locked: Pairing operation OK. AES key is written in to EMS and locked.  Immo code programmed and unlocked: Pairing operation not done properly. AES key is written in to EMS and Unlocked.  Key code OK / Authentication OK: AES key for EMS ECU and ICU are same.  Free starts Inactive: After locking AES, free starts are inactive. If AES is not locked free starts is active for 5 times.  Immo CAN Communication OK: Proper communication. Otherwise it will show CAN communication “OFF”.