Vehicle Platform: NEXON, X4, Q5, TIGOR_MCE ECU Name: PEPS DTC Troubleshooting Data Version: 1.8 Date: 28 Feb 2023 Author: Rajasekhara Reddy Page: 354 of 407 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 VCU - Bus Signal / Message Failure Overview:- ISO Code U1320-08 Customer Symptom Engine will not start Fault Effects (On Vehicle) Cranking will not happen Lamp Status (If Any) N.A Fault Detection Condition 1. VCU connector is not connected properly or disconnected from its location 2. CAN Stub wire from VCU connector side is disconnected. 3. VCU ECU is not powered up. Normal Operating Condition VCU ECU communicates properly TML diagnostic Tool. Probable Trouble Area Disconnection of the VCU connector Healing Condition To fix the VCU connector correctly and Fix the wiring harness issues from VCU side. Table 73:- U1320 -08 overview details
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