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: 787 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. B1314 – 16: Auto Up ECU Undervoltage Overview: ISO Code B1314 – 16 Customer Symptom No Window up movement Fault Effects (On Vehicle) No Window up movement. Lamp Status (If Any) - Fault Detection Condition BCM log this fault when window winding auto up ECU supply is under voltage. Normal Operating Condition Window up operation takes place normally when window winding switch is normally operated. Probable Trouble Area 1. BCM connector Fault 2. Harness shorted, Connection faulty 3. Auto up ECU under voltage Healing Condition 1. Check battery voltage 2. Ignition OFF  ON. 3. Clear DTC Command. Component Details: Window winding switch is located near driver arm rest of the vehicle. Preliminary Checks: 1. Check Battery Voltage (12.5 V & above) 2. Check ECU pins for oxidation, bending & damage.