Vehicle Platform: Zest, Bolt, Tiago, Tigor, Osprey, Q501, X451, Q502 ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 3.8 Date: 17-10-2022 Author: BCM COC Page: 10 of 1202 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. B161A - 23: Internal Unlock Switch - signal stuck low ............................................................................................... 486 B161E - 23: Mechanical Key Reset Signal - signal stuck low ................................................................................... 490 B161F – 23: Mechanical Key Set Signal - signal stuck low ....................................................................................... 494 B163F – 23: Tailgate Unlock Switch - signal stuck low .............................................................................................. 498 Power Mode (OMM) DTCs ............................................................................................................................................. 502 U100F - 11: Ignition Power mode Input - Circuit Short to Ground ............................................................................ 502 U100F - 12: Ignition Power mode Input - Circuit Short to Battery ............................................................................ 506 U1000 - 11: Accessory Power mode Input - Circuit Short to Ground ...................................................................... 509 U1000 - 12: Accessory Power mode Input - Circuit Short to Battery ....................................................................... 513 U1010 - 11: Key In Signal - Circuit Short to Ground ................................................................................................... 516 U1010 - 12: Key In Signal - Circuit Short to Battery ................................................................................................... 520 U100E - 11: Crank Power mode Input - Circuit Short to Ground .............................................................................. 523 U100E - 12: Crank Power mode Input - Circuit Short to Battery .............................................................................. 527 U100E - 23: Crank Power mode Input – switch stuck low ......................................................................................... 530 B1F00 – 11: Accessory Delay Signal – Circuit Short to Ground ............................................................................... 534 U1013 – 11: Wake-Up Signal – Circuit Short to Ground ............................................................................................ 538 U1013 – 12: Wake-Up Signal – Circuit Short to Battery ............................................................................................ 542 U1014 – 09: Ignition Switch Failure ............................................................................................................................... 543 Interior Lamps DTCs ........................................................................................................................................................ 544 B1F04 – 11: Front Courtesy Light – Circuit Short to Ground .................................................................................... 544 B1F06 – 11: Ignition Keyhole Illumination Signal – Circuit Short to Ground ........................................................... 548 B1F09 – 11: Interior Lamp Deactivation Signal – Circuit Short to Ground .............................................................. 552 B1F11 – 11: Ambient Door Pocket Lights – Circuit Short to Ground ....................................................................... 556 B1F11 – 15: Ambient Door Pocket Lights – circuit short to battery or open ........................................................... 560 B1F12 – 11: Ambient Roof Lights – Circuit Short to Ground ..................................................................................... 564 B1F12 – 15: Ambient Roof Lights – circuit short to battery or open ......................................................................... 568 B1F13 – 11: Ambient Spot Lights – Circuit Short to Ground ..................................................................................... 572 B1F14 – 11: Ambient Roof Lights – Circuit Short to Ground ..................................................................................... 576 B1F14 – 15: Ambient Foot well Lights – circuit short to battery or open ................................................................. 580
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