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: 1019 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. U1320 – 08 : Lost Communication With Vehicle Control Unit (VCU) – Bus Signal/Message failures Overview: ISO Code U1320 - 08 Customer Symptom Vehicle control system may not function. Fault Effects (On Vehicle) Vehicle control system may not function. Lamp Status (If Any) NA Fault Detection Condition CAN transceiver fault, partner ECU fault. Normal Operating Condition Vehicle control system should function normally. Probable Trouble Area CAN transceiver fault, partner ECU fault. Healing Condition Check with Service tool, check function of partner ECU. Component Details: NA Preliminary Checks: 1. Check Battery Voltage (12.5 V & above) 2. Check ECU pins for oxidation, bending & damage.