Transponder & CAN based Immobilizer (Continental) Part Replacement handling – Service Documentation TITLE : Immobilizer (Conti) Service Manual-Aria Eagle xxxx Date: 28-08-2015 Version: 0.1 Page: 11 of 25 Prepared : Amanulla Bugga Approved: Dinesh G Dodmane This specification is the exclusive property of Tata Motors Limited. Without their consent it may not be reproduced or given to third parties. The above specifications are subject to change and therefore suppliers are requested to refer the latest one. CONTROLLED COPY FOR RESTRICTED CIRCULATION 3.2. Immobilizer Status in EMS ECU: The information given in table below is the status of Immobilizer system in EMS & it can be accessed by steps given below. Steps 1. Connect the EMS ECU diagnostic tester to the Diagnostic connector in the vehicle 2. Start the communication 3. Go to "Engine parameter" 4. Select “Electronic key” and press “Start” 5. The diagnostic tester will show the following No. Text indicted Condition Description Normal/ Abnormal 1 Immo programmed in EMS - EMS ECU software is Immobilizer enabled Normal Virgin ECU - - Abnormal 2 Engine starting enabled by EMS Original E-Key in SCL Vehicle Ready to start Normal Engine starting disabled by EMS No/wrong E-Key in SCL Vehicle will not start Abnormal 3 AESKEY code programmed in EMS but not locked Pairing operation not done properly AES key is written in to EMS but not locked Abnormal (displayed only if exists) AESKEY code programmed in EMS but locked Pairing operation OK AES key is written in to EMS and locked. Normal 4 Immo learnt Pairing operation OK AES key is written in to EMS and locked. Normal Immo blank Pairing operation OK AES key is written in to EMS and locked. Abnormal 5 Antiscan inactive Pairing operation OK Vehicle Ready to start Normal Antiscan active Pairing NOK Vehicle will not start Abnormal 6 Key code OK /Authentication OK Successful authentication & AES key is OK AES key for EMS ECU & Immobilizer are same Normal No Valid key detected/ bad Authentication Check the DTC code in section 10 Vehicle will not start Abnormal 7 Not Used - Not Used Normal 8 Immo CAN communication CAN OFF/BUS OFF Refer Section 8 CAN communication error (bus off/mute) Abnormal Immo CAN communication OK - - Normal
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