Gravitas FATC Gen 3 DTC Troubleshooting Data Version: 1.0 Date: 15-July-2023 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. Author: ERC Page: 4 of 301 B1F4A-23:- AC Request Button-Signal Stuck Low-------------------------------------------------------------------------153 B1F4D-23:- Air Distribution Request Button-Signal Stuck Low -------------------------------------------------------156 B1F59-23:- Driver side Air Temperature Up-Signal Stuck Low --------------------------------------------------------159 B1F5A-23 :- Driver side Air Temperature Down - Signal Stuck Low-------------------------------------------------161 B1F5B-23:- Co-Driver side Air Temperature Up-Signal Stuck Low---------------------------------------------------165 B1F5C-23:- Co-Driver side Air Temperature Down-Signal Stuck Low ----------------------------------------------167 B1F4B-23:- Blower speed up request-Signal Stuck Low ----------------------------------------------------------------170 B1F4C-23:- Blower speed down request-Signal Stuck Low ------------------------------------------------------------173 B1F33-23:- Auto Request Button-Signal Stuck Low-----------------------------------------------------------------------177 B1F64-11:-PTC heater temperature sensor signal-circuit short to ground ---------------------------------------180 B1F64-15:-PTC heater temperature sensor signal-circuit short to battery or open----------------------------188 B1F36-23:- Control Panel Request Button-Signal Stuck Low ----------------------------------------------------------195 B1F37-23:- Max. Defrost Request Button-Signal Stuck Low -----------------------------------------------------------198 B1F38-23:- Rear Defog Request Button -Signal Stuck Low-------------------------------------------------------------201 B1F39-23:- Fresh Air / Recirc Request Button -Signal Stuck Low----------------------------------------------------204 U3006-16:- Control Module Input Power “A” – Circuit Voltage below Threshold -------------------------------207 U3006-17:- Control Module Input Power “A” – Circuit Voltage above Threshold-------------------------------211 B1F50-11:- Control Module output power for FATC Control Head- Circuit Short to ground----------------215 B1F50-15:-Control Module output power for FATC Control Head- Circuit Short to battery and Open--218 B1F48-14:- All HVAC & non-HVAC sensors Voltage reference pin- Circuit Short to ground or Open---221 B1F48-12:-All HVAC & non-HVAC sensors Voltage reference pin- Circuit Short to battery ----------------224 P0604-00:- Internal Control Module Random Access Memory (RAM) Error --------------------------------------227 P062F-00:- Internal Control Module EEPROM Error -----------------------------------------------------------------------229 P0605-00:- Internal Control Module Read Only Memory (ROM) Error -----------------------------------------------231 CAN Bus Architecture: ---------------------------------------------------------------------------------------------------------------233 Wiring Harness -------------------------------------------------------------------------------------------------------------------------- 233 Preliminary Check ---------------------------------------------------------------------------------------------------------------------234 U0028-13:- Vehicle Communication Bus A-open circuit -----------------------------------------------------------------235 U0028-88:- Vehicle Communication Bus A-Bus off ------------------------------------------------------------------------237 U131D-88:- CCH LIN Bus A ---------------------------------------------------------------------------------------------------------238 U2416-81:- Invalid Data Received From IN CAR Temperature Sensor ----------------------------------------------240 B1F4E-02:- CCM is configured as Dual while CCH as Single (Zone 2) – General signal Failure ----------242 B1F4F-02:- CCM configured as Single while CCH as Dual (Zone 3) – General signal Failure --------------244 U2417-57:- Flash Image Record Data Mismatch- Invalid /Incompatible Software component -------------246 B1F52-4B:- Half Bridge Driver Thermal Warning –Over Temperature ----------------------------------------------248 B1F53-55:- CCH_CCM Read ECU Parameter Routine –Not Configured -------------------------------------------- 250 B1F68-55:- CCH_CCM fascia configuration fault –Not Configured --------------------------------------------------253 U0100-08:- Lost communication with ECM- Message Timeout Failure ---------------------------------------------255 U0155-08:- Lost communication with instrument Panel Cluster- IPC Message Time Out Failure --------261 U0140-08:- Lost communication with Body Control Module- Message Timeout Failure ---------------------265 U0198-08:- Lost communication with Telematics control unit- Lost communication with telematics control unit- bus signal/message failure --------------------------------------------------------------------------------------272 U1320-08:- Lost communication with Vehicle control unit- Lost communication with vehicle control unit- bus signal/message failure--------------------------------------------------------------------------------------------------276 U0401-81:- Invalid Data Received From ECM --------------------------------------------------------------------------------280
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