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: 1011 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. B162D - 14: Tailgate Unlock Signal - Circuit Short to Ground or Open Overview: ISO Code (DTC Code) B162D - 14 Customer Symptom Tailgate will not unlock Fault Effects (On Vehicle) Unnecessary battery power consumption (because Interior Roof lamp in Auto mode selection will always ON for 10 minutes.) Lamp Status (If Any) Interior Roof lamp in Auto mode selection will ON for 10 minutes every time any door open. 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 or open, then the Tailgate state is closed / ajar state. If the Tailgate is closed, then BCM shall receive the feedback of Tailgate as closed / ajar status. Preliminary Checks: Check Battery Voltage (9V-16V) Check ECU pins for oxidation, bending & damage.