Immobilizer –DTC Troubleshooting Data Version: 1.2 Date:03-June-2014 Prepared Author: Sarang K/Mithipati P Review & approved by: R A Rode (ERC-E&E) Page: 61 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. U1614 - 81:- Odometer storage fault invalid serial data received Overview: ISO Code U1614 -81 Customer Symptom No Impact Fault Effects (On Vehicle) No effect Lamp Status (If Any) None Fault Detection Condition VICM monitors odo value after ignition OFF Normal Operating Condition No fault in immobilizer Probable Trouble Area Instrument cluster faulty Healing Condition N/A Component Details: Immobilizer system is designed to prevent vehicle theft by electronically disabling the engine starting system. The engine can be started only with vehicle’s original immobilizer ignition key, which has an electronic identification programmed code. Immobilizer unit is an add-on part on the ignition switch, fitted on the steering column. The engine can be started only with the vehicle’s original immobilizer ignition key. The electronic key communicates the identification code to ICU when the key is turned to the "Ignition ON" position. Preliminary Checks: NA Trouble Shooting: Step Checks IF YES IF NO 1 Check instrument cluter supply connection. Rectify fault Go to next step 2 Replace instrument cluster DTC’s confirmation:- After rectification, ensure the following points before handing over the system to the customer 1) Battery Voltage is between 9 to 16V. 2) Replacement of ECU. 3) Drive the vehicle on road and check the assistance. Circuit Schematic Diagram:- NA
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