Immobilizer –DTC Troubleshooting Data Version: 1.2 Date:03-June-2014 Prepared Author: Mithipati Prasad Review & approved by: R A Rode (ERC-E&E) Page: 34 of 67 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. DTC’s confirmation:- After rectification, ensure the following points before handing over the system to the customer 4) Battery Voltage is between 9 to 16V. 5) Replacement of ECU 6) Drive the vehicle on road and check the assistance. Circuit Schematic Diagram:- VICM pin no Pin description A Stop Yes No Is voltage < 13.5v? Replace/ Recharge the battery Take corrective action to repair alternator circuit. No Yes Is DTC Present? Check whether under bonnet fuse box (60 Amp) is blown off. (Circuit Schematic Diagram) Is Fuse blown off? Yes No Replace the respective fuse Check the Alternator output voltage.
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