NEXON 2.0 EV DTC Troubleshooting Document for VCU Version: 1.0 draft Date: 31-Jan-2022 Copyright © TATA MOTORS Ltd. This document must not be used in anyway, such as copying and redistributing to third parties, without the consent of author. Contents U1006 - 04: - Control Module Internal - System Internal Failures ............................................................ 11 U1006 - 47: - Control Module Internal - watchdog / safety Microcontroller failure ............................... 15 U0028 - 13: - Vehicle Communication Bus A - circuit open ...................................................................... 19 U0028 - 88: - Vehicle Communication Bus A - bus off ............................................................................... 23 U0037 - 13: - Vehicle Communication Bus B - circuit open ....................................................................... 27 U0037 - 88: - Vehicle Communication Bus B - bus off ............................................................................... 31 U0046 - 13: - Vehicle Communication Bus C - circuit open ....................................................................... 36 U0046 - 88: - Vehicle Communication Bus C - bus off ............................................................................... 39 P3045 - 44: - Read diagnosis for non-volatile memory (EEPROM) - data memory failure ...................... 42 P3046 - 44: - Write diagnosis for non-volatile memory (EEPROM) - data memory failure ..................... 46 P3003 -14: - Accelerator Pedal Sensor 1- circuit short to ground or open circuit .................................... 50 P3003 -12: - Accelerator Pedal Sensor 1 - circuit short to battery ........................................................... 55 P3003 - 29: - Accelerator Pedal Sensor 1 - signal invalid .......................................................................... 61 P3004 – 8F: - Accelerator Pedal Sensor 1 and Sensor 2 values inconsistent - erratic .............................. 65 P3006-14: - Accelerator Pedal Sensor 2 - circuit short to ground or open circuit .................................. 69 P3006-12: - Accelerator Pedal Sensor 2 - circuit short to battery........................................................... 75 P3006- 29: - Accelerator Pedal Sensor 2 - signal invalid ........................................................................... 81 P3008 -11: - Power Distribution Unit Positive Busbar Thermistor - circuit short to ground ................... 85 P3008 -15: - Power Distribution Unit Positive Busbar Thermistor - circuit short to battery or open ..... 91 P3008 - 4B: - Power Distribution Unit Positive Busbar Thermistor - over temperature ......................... 96 P3008 - 29: - Power Distribution Unit Positive Busbar Thermistor - signal invalid ................................ 101 P3009 - 11: - Power Distribution Unit Negative Busbar Thermistor - circuit short to ground .............. 105 P3009 -15: - Power Distribution Unit Negative Busbar Thermistor - circuit short to battery or open . 110 P3009- 4B: - Power Distribution Unit Negative Busbar Thermistor - over temperature ....................... 115 P3009- 29: - Power Distribution Unit Negative Busbar Thermistor - signal invalid ............................... 119 P3016 - 85: - DC Charging Inlet temperature sensor 1 - signal above allowable range ......................... 123 P3016 - 84: - DC Charging Inlet temperature sensor 1 - signal below allowable range ......................... 127 P3016 - 86: - DC Charging Inlet temperature sensor 1 - signal invalid ................................................... 132 P3017 - 85: - DC Charging Inlet temperature sensor 2 - signal above allowable range ......................... 133 P3017 - 84: - DC Charging Inlet temperature sensor 2 - signal below allowable range ......................... 138 P3017 - 86: - DC Charging Inlet temperature sensor 2 - signal invalid ................................................... 143 P3026 - 13: - Battery cooling chiller solenoid valve activation line - circuit open ................................. 144
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