Q5/X451 FATC DTC Troubleshooting Data Version: 1.0 Date: 16-Oct-2018 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: 3 of 202 Table of Contents B1F1B-11:- Solar Radiation Sensor Circuit - Circuit short to Ground; ----------------------------------------------- 5 B1F1B-15:- Solar Radiation Sensor Circuit - Circuit short to battery or open; ------------------------------------ 8 B1F23-11:- Evaporator Temperature Sensor Signal - Circuit Short to Ground; --------------------------------- 11 B1F23-15:- Evaporator Temperature Sensor Signal - Circuit Short to Battery or Open; --------------------- 14 B1F2D-11:- Air Temperature Motor Drive Line- Circuit Short to Ground; ----------------------------------------- 17 B1F2D-12:- Air Temperature Motor Drive Line - Circuit Short to Battery; ----------------------------------------- 21 B1F2D-13:- Air Temperature Motor Drive Line- Circuit Open; -------------------------------------------------------- 25 B1F2E-11:- Air Distribution Motor Drive Line– Circuit short to Ground; ------------------------------------------ 29 B1F2E-12:- Air Distribution Motor Drive Line– Circuit short to Battery; ------------------------------------------- 33 B1F2E-13:- Air Distribution Motor Drive Line – Circuit Open; -------------------------------------------------------- 37 B1F2C-11:- Fresh Air/RECIRC Motor Drive Line- Circuit Short to Ground; --------------------------------------- 41 B1F2C-12:- Fresh Air/RECIRC Motor Drive Line- Circuit Short to Battery; --------------------------------------- 45 B1F2C-13:- Fresh Air/RECIRC Motor Drive Line- Circuit Open: ------------------------------------------------------ 49 B1F2F-12:- Blower Motor Drive Signal - Circuit Short to battery; ---------------------------------------------------- 53 B1F1F-11:- Air Temperature Feedback Signal - Circuit Short To Ground; ---------------------------------------- 56 B1F1F-15:- Air Temperature Feedback Signal - Circuit Short to Battery or Open; ----------------------------- 60 B1F21-11:- Air Distribution Feedback Signal – Circuit Short to Ground; ----------------------------------------- 64 B1F21-15:- Air Distribution Feedback Signal – Circuit Short to battery or Open; ------------------------------ 68 B1F1D-11:- Fresh Air/RECIRC Feedback Signal - Circuit Short to Ground; -------------------------------------- 72 B1F1D-15:- Fresh Air/RECIRC Feedback Signal - Circuit Short to Battery or open; --------------------------- 76 B1F3E-71:- Temperature Door Control Motor - Actuator stuck; ------------------------------------------------------ 80 B1F3E-54:- Temperature Door Control Motor Calibration Fault; ----------------------------------------------------- 84 B1F3D-71:- Air Distribution Motor Drive Line– Actuator stuck; ------------------------------------------------------ 88 B1F3D-54:- Air Distribution Motor Drive Line– Missing calibration; ------------------------------------------------ 92 B1F3F-71:- Fresh Air/RECIRC Drive Motor – Actuator stuck; --------------------------------------------------------- 96 B1F3F-54:- Fresh Air/RECIRC Drive Motor – Missing calibration; --------------------------------------------------100 B1F4A-23:- AC Request Button-Signal Stuck Low ----------------------------------------------------------------------104 B1F4B-23:- Blower Speed Up Request Button-Signal Stuck Low --------------------------------------------------107 B1F4C-23:- Blower Speed Down Request Button- Signal Stuck Low; --------------------------------------------110 B1F4D-23:- Air Distribution Request Button-Signal Stuck Low -----------------------------------------------------113 B1F35-23:- ECON Request Button-Signal Stuck Low -------------------------------------------------------------------116 B1F33-23:- Auto Request Button-Signal Stuck Low --------------------------------------------------------------------119 B1F36-23:- Control Panel Request Button-Signal Stuck Low --------------------------------------------------------122 B1F37-23:- Max. Defrost Request Button-Signal Stuck Low ---------------------------------------------------------125 B1F38-23:- Rear Defog Request Button -Signal Stuck Low -----------------------------------------------------------128 B1F39-23:- Fresh Air / Recirc Request Button -Signal Stuck Low --------------------------------------------------131 U3006-16:- Control Module Input Power “A” – Circuit Voltage below Threshold ------------------------------134 U3006-17:- Control Module Input Power “A” – Circuit Voltage above Threshold ------------------------------138 B1F50-11:- Control Module output power for FATC Control Head- Circuit Short to ground ---------------142 B1F50-15:-Control Module output power for FATC Control Head- Circuit Short to battery and Open --145 B1F48-14:- All HVAC & non-HVAC sensors Voltage reference pin- Circuit Short to ground or Open --148 B1F48-12:- All HVAC & non-HVAC sensors Voltage reference pin- Circuit Short to battery ---------------151 P0604-00:- Internal Control Module Random Access Memory (RAM) Error -------------------------------------154 P062F-00:- Internal Control Module EEPROM Error ---------------------------------------------------------------------156
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