Vehicle Platform: All ECU Name: Telematics Control Unit (TCU) DTC Troubleshooting Data Version: 1.12 Date: 02-06-2022 Author: TCM COC Page: 94 of 150 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. B2833 - 12 :- Wake-Up Input from VCU - Circuit Short To Battery: Overview: ISO Code B2833 – 12 Wake-Up Input from VCU - Circuit Short To Battery Customer Symptom Following Telematics features will not be working:- Remote climate/HVAC control, Remote immobilization when car is stolen , Remote charging On/Off, Valet Mode , EV range prediction - VCU Calculated, View Car Health Dashboard, Time to charge ( in Hrs and Mins), Remote SOC, EV motor check, one battery and DTE check 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 wake-up input from VCU pin is shorted to battery Normal Operating Condition TCU ECU receives proper wake-up input from VCU Probable Trouble Area Faulty TCU TCU Connector Fault Wake-up input from VCU (pin:32)is shorted to battery Internal Component failure TCU pin have problem with oxidation, bending & damage Healing Condition 1. Verify DTC ageing-Clear in case of ageing 2. Verify any other communication related DTCs present 3. Verify TCU DTCs and check for any related DTCs 4. Follow TCU trouble shooting guideline to clear the relevant functional DTCs 5. Replace TCU connector 6. If problem persists after above steps (from 1 to 5) then replace TCU
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