NEXON NEW MCE-2 DCT BS VI DTC Troubleshooting Guide Version: 1.0 Date: 16-06-2023 Author: Akash/Rahul Page:555 of 645 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. 160. U0402-41 Gear shifter received Invalid data from TCM: General checksum failure Overview: ISO Code U0402-41 Customer Symptom • Warning message 'get vehicle checked' • Gear Actuation Limited Mode - discomfort / shift quality impacted • Transmission Fault Lamp ON Fault Effects (On Vehicle) • Warning message 'get vehicle checked' • Gear Actuation Limited Mode - discomfort / shift quality impacted • Transmission Fault Lamp ON Lamp Status (If Any) Transmission Fault Lamp ON (Service indication 0x2) Fault Detection Condition When data is corrupted during communication. Normal Operating Condition Gear shifter received correct data in normal condition. Probable Trouble Area 1. GSL 2. TCU Healing Condition The reaction is cleared at SW restart and driing if the detection is FALSE for more than 0 ms Component Details:- Each ECU shall have one message CRC failure DTC per partner ECU, depending on the criticality of receive message from partner ECU. Preliminary Checks:- Trouble Shooting:- Step Checks IF YES IF NO 1. Hardware related issue in gear shift lever and DCT TCU. First replace the gear shift lever. Clear the DTC and check if the DTC does not come back 2. replace the TCU . flash the adaption data from the previous TCU. Clear the DTC and check if the DTC does not come back DTC’s confirmation:- After rectification, clear all DTC’s and ensure the following points by referring TCU parameters using TML diagnostic tool before handing over to customer.
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