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: 417 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. B162C - 11: Tailgate State Switch - Circuit Short to Ground Overview: ISO Code (DTC Code) B162C - 11 Customer Symptom 1. The IC shows Tailgate as open status, even if the Tailgate is closed as presumed by the customer. 2. Interior Roof lamp in Auto mode selection will ON for 10 minutes. 3. The Mis-lock sound occurs on RKE lock command. Fault Effects (On Vehicle) 1. Unnecessary battery power consumption (because Interior Roof lamp in Auto mode selection will always ON for 10 minutes.) 2. The vehicle will not enter into arm state, when RKE lock is given and no alarm functionality will work. Lamp Status (If Any) 1. Interior Roof lamp in Auto mode selection will ON for 10 minutes. 2. Tailgate door telltale status on IC shows always ON. 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 ground fault is detected for Tailgate State 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 Fault 2. Rear side wiring harness short to ground 3. Tailgate State Switch is damaged or stuck or faulty 4. BCM ECU fault Healing Condition 1. Ignition OFF  ON 2. Clear DTC Command Component Details: Tailgate State Switch, BCM connector Functionality: If the Tailgate State Switch is Short to Ground, then the Tailgate state is in opened/ ajar state. If the Tailgate is opened, then BCM shall receive the feedback of Tailgate as open/ ajar status. Preliminary Checks: 1. Check Battery Voltage (9V-16V) 2. Check ECU pins for oxidation, bending & damage.