NEXON NEW MCE-2 DCT BS VI DTC Troubleshooting Guide Version: 1.0 Date: 16-06-2023 Author: Akash/Rahul Page:243 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. 70. P0968-71 Line valve: actuator stuck (EDS5) Overview: ISO Code P0968-71 Customer Symptom • CAN buss off limphome actived Fault Effects (On Vehicle) • CAN buss off limphome actived Lamp Status (If Any) Transmission Fault Lamp OFF Service indication 0x0 Fault Detection Condition Line pressure valve stuck (FTT=500ms) Normal Operating Condition TCU does not detect any fault Probable Trouble Area 1. TCU EEPROM. 2. Oil level. 3. Drain oil and check for metallic particles in oil. 4. Oil is contaminated. 5. Gasket between HCU and clutch housing. 6. HCU. 7. TCU. Healing Condition The reaction is cleared at SW restart if the detection is FALSE for more than 1000 ms Component Details: EDS 5 = Line pressure solenoid used in hydraulic control unit to maintain line pressure necessary to actuate clutch actuation. Preliminary Checks: 1) Loose/ Damaged Connections between Electro valve and TCU. 2) Loose/ Damaged mechanical fitments of TCU (TCU to valve body mounting). 3) Check correct fitment of ground cable connections on vehicle chassis. Trouble Shooting:- Step Checks IF YES IF NO 1. Clear TCU EEPROM data and flash back the HCU adaptions and perform CPC adaptions (in case of permanent sticky valve) , Clear the DTC and check if the DTC does not come back. Go to step 2 2. Check oil level, if oil level too low, fill untill correct level, Clear the DTC and check if the DTC does not come back. Go to step 3 3. Oil level is fine, but DTC persists, drain oil and check for metallic particles in oil. <To be checked with example pictures of acceptable oil contamination> Clear the DTC and check if the DTC does not come back. Go to step 4 4 If oil is contaminated, replace transmision with new oil and filter, and let the transmission run for some time (stationary, manual mode go trough gears) + Go to step 5
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