TIAGO TIGOR BSVI - SERVICE MANUAL - DTC 24-12-2021

Vehicle Platform: Zest, Bolt, Tiago, Tigor, Osprey, Q501, X451, Q502 ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 3.1 Date: 30-11-2019 Author: BCM COC Page: 519 of 1106 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. U1010 - 12: Key In Signal - Circuit Short to Battery Overview: ISO Code (DTC Code) U1010 - 12 Customer Symptom Vehicle RKE Lock will not operate. Fault Effects (On Vehicle) 1. Vehicle RKE Lock will not operate. 2. Battery Drain Lamp Status (If Any) NA Fault Detection Condition This fault will be logged after the input switch test routine execution. User has to operate the switch manually during routine. If short to battery fault is detected for ignition power mode input switch then this DTC code will be returned with the Routine results. Normal Operating Condition There should not be any fault returned by routine. Probable Trouble Area 1. BCM connector wired wrong 2. Cockpit wiring harness short to ground 3. Ignition switch failure 4. sensor damaged Healing Condition 1. Ignition OFF  ON 2. Clear DTC Command Component Details: Key In input switch is part of Ignition switch and interfaced to the BCM. If the Key In input switch is activated and RKE Lock functionality will not work. If user put the ignition switch to Key In power mode input position, RKE Lock functionality will not work. Key In input switch is active high. Preliminary Checks: 1. Check Battery Voltage (9V-16V) 2. Check ECU pins for oxidation, bending & damage. Trouble Shooting:-