Vehicle Platform: Nexon-EV ,Nexon-MCE ECU Name: Telematics Control Unit (TCU) DTC Troubleshooting Data Version: 1.4 Date: 16-09-2020 Author: TCM COC Page: 113 of 121 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. B2836 - 12 :- Digital Output - Circuit Short To Battery Overview: ISO Code B2836 – 12 Digital Output - Circuit Short To Battery Customer Symptom Telematics ECU features will not be working Fault Effects (On Vehicle) Remote , Vehicle security, Alerts and other telematics features will not be working Fault Detection Condition DTC is set in case of TCU Digital output pin is shorted to battery Normal Operating Condition Digital Output data is properly transmitting in normal condition Probable Trouble Area Faulty TCU TCU Connector Fault Digital output pin (pin :34/35) is shorted to battery Internal Component failure TCU pin have problem with oxidation, bending & damage Healing Condition Verify DTC ageing-Clear in case of ageing Verify any other communication related DTCs present Verify TCU DTCs and check for any related DTCs Follow TCU trouble shooting guideline to clear the relevant functional DTCs Replace TCU connector If problem persists after above steps then replace TCU
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