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: 72 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. U1008 – 16 :- Control Module Input Power 1 - circuit voltage below threshold Overview: ISO Code U1008 - 16 Customer Symptom BCM will probably not function or will function intermittently or partially Fault Effects (On Vehicle) Cannot determine scope without knowledge of power line applicability Lamp Status (If Any) None Fault Detection Condition If Battery(supply) voltage goes below 11.5V If Alternator is not charging the battery and alternator voltage is less than 13.5V or 0V. Normal Operating Condition Normal operating range: ECU will be awake from 6V to 16 V. Full assistance is b/w 11.5 to 16 volts. Reduced assistance is b/w 9 to 11.5 V Probable Trouble Area Low battery Healing Condition N/A Component Details: N/A Preliminary Checks: 1. Voltage at the battery terminals should be greater than 11.5V. 2. BCM power supply connector should have greater than 11.5V for full assistance. 3. Check battery cable and BCM connector terminals for damage. 4. Check BCM ECU for pin bend/damage. 5. Alternator output voltage should be between 13.5 V to 14.5 V in engine running condition.