Immobilizer –DTC Troubleshooting Data Version: 1.2 Date:03-June-2014 Prepared Author: SK Review & approved by: R A Rode (ERC-E&E) Page: 41 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. Trouble Shooting:- Voltage fluctuates between 0V and 14V? A Yes Disconnect VICM ECU power supply connector. Check voltage b/w pin 1& 2. (Refer Connector View & Information) No Is DTC Present? Yes No Stop 1. Connect the TML Diagnostic Tool. 2. Turn the Ignition ON 3. Check the status of DTC’s (Memorized/Current) 4. Record the DTC & Clear 5. Turn Ignition OFF & ON. 6. Read ECU parameters using diagnostic tool Range: 9 to 16 V. 7. Verify If U3006 – 17 is present Replace wiring harness (Vehicle side) Check resistance of Under bonnet fuse box (60 Amp). Is it infinity /Showing No value (fuse is blown)? Yes No Replace the respective fuse A
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