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. P3026 - 12: - Battery cooling chiller solenoid valve activation line - circuit short to battery ............... 148 P3026 - 11: - Battery cooling chiller solenoid valve activation line - circuit short to ground ................ 152 P3028 - 13: - Cabin cooling Evaporator solenoid valve activation line - circuit open ............................ 156 P3028 - 12: - Cabin cooling Evaporator solenoid valve activation line - circuit short to battery .......... 160 P3028 - 11: - Cabin cooling Evaporator solenoid valve activation line - circuit short to ground .......... 163 P302B-13: - DC Charging Contactor Negative Coil Low Side activation line - circuit open .................... 166 P302B- 12: - DC Charging Contactor Negative Coil Low Side activation line - circuit short to battery . 171 P302B- 11: - DC Charging Contactor Negative Coil Low Side activation line - circuit short to ground .. 176 P302C-13: - DC Charging Contactor Positive Coil Low Side activation line - circuit open ...................... 181 P302C- 12: - DC Charging Contactor Positive Coil Low Side activation line - circuit short to battery ... 186 P302C- 11: - DC Charging Contactor Positive Coil Low Side activation line - circuit short to ground ... 191 P302D - 94: - HV Battery Cooling Pump dry run detected - unexpected operation .............................. 196 P302D - 19: - HV Battery Cooling Pump - circuit current above threshold ............................................ 202 P302D – 98: HV Battery Cooling Pump - component or system over temperature ............................... 208 P302D - 07: - HV Battery Cooling Pump - Mechanical Failures ............................................................... 214 P302D - 04: - HV Battery Cooling Pump - System Internal Failures ........................................................ 219 P302D – 86: - HV Battery Cooling Pump - signal invalid ......................................................................... 224 P302D – 13: - HV Battery Cooling Pump - circuit open ........................................................................... 229 P302D – 12: - HV Battery Cooling Pump - circuit short to battery .......................................................... 234 P302D – 11: - HV Battery Cooling Pump - circuit short to ground .......................................................... 239 P302E - 13: - HV Battery Keep alive relay activation line - circuit open ................................................. 244 P302E - 12: - HV Battery Keep alive relay activation line - circuit short to battery ............................... 249 P302E - 11: - HV Battery Keep alive relay activation line - circuit short to ground................................ 254 P302F - 13: - PTC Contactor Low Side activation line - circuit open ....................................................... 258 P302F - 12: - PTC Contactor Low Side activation line - circuit short to battery ..................................... 263 P302F - 11: - PTC Contactor Low Side activation line - circuit short to ground ...................................... 268 P3030 - 13: - E-Drive Contactor Low Side activation line - circuit open ................................................. 273 P3030 - 12: - E-Drive Contactor Low Side activation line - circuit short to battery ............................... 278 P3030 - 11: - E-Drive Contactor Low Side activation line - circuit short to ground ................................ 283 P3031 - 13: - Traction cooling fast fan relay activation line - circuit open ............................................. 288 P3031 - 12: - Traction cooling fast fan relay activation line - circuit short to battery ........................... 292 P3031 - 11: - Traction cooling fast fan relay activation line - circuit short to ground ............................ 295 P3032 - 13: - Traction cooling slow fan relay activation line - circuit open............................................ 298
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