Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 533 of 834 Copyright by TATA MOTORS Ltd. This document must not be used in any w ay, such as copying and redistributing to third parties, w ithout our consent Read Immo status from the diagnostic tool, Immo status shall be – ‘Authentication between EMS and IMMO failed / Bad authentication’ && Engine starting disabled by EMS. If Immo status is not as above, then vehicle not starting issue is not related to Immobilizer Trouble Shooting: Step Checks IF YES IF NO 1 Give a battery reset to EMS and IMMO and give a Power latch of 15 secs and then Turn ON ignition. Problem resolved? Confirm that issue resolved and handover vehicle back to customer. Go to next step 2 Perform the Immo pairing using the diagnostic tool. Immo pairing successful? Go to next step Check whether the CAN Communication is healthy. If Yes, replace Immo / EMS and perform the Immo pairing. DTC’s confirmation (checks before handing over vehicle to customer): After the DTC clearing, vehicle should start, no error in immobilizer & Immo telltale off. Circuit Schematic Diagram: NA Component Location & Image: NA Connector View & Information: Wiring Harness Side NA
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