NEXON AMT BS VI DTC Troubleshooting Guide Version: 2.3 Date: 23-07-2019 Author: Rahul N Page: 408 of 442 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. 140. U0146-08:-Lost communication with Drive Control Switch Module-DCS Bus signal/Message Failure Overview: ISO Code U0146-08 Customer Symptom TBD Fault Effects (On Vehicle) TBD Lamp Status (If Any) TBD Fault Detection Condition 6. DCS connector is not connected properly or disconnected from its location. 7. DCS is not powered up 8. DCS connector is not connected/ disconnected from vehicle side wiring harness. 9. CAN_H, CAN_L or/ and both lines of TCM are opened 10. Wrong data length (less than expected data) from DCS Normal Operating Condition TCM ECU communicates properly with DCS ECU. Probable Trouble Area 3. Disconnection of the DCS connector 4. CAN_H and CAN_L lines at TCM connector end Healing Condition 3. To fix the DCS connector correctly and Fix the wiring harness issues from DCS side. 4. CAN_H, CAN_L or/ and both lines of TCM are connected properly to the TCM connector.
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