NEXON NEW MCE-2 DCT BS VI DTC Troubleshooting Guide Version: 1.0 Date: 16-06-2023 Author: Akash/Rahul Page:445 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. 127. P3113-00 Drum Homing Failure Overview: ISO Code P3113-00 Customer Symptom • Critical malfunction. Power train is opened. Power loss immediately triggered- Gearshift is disabled • Transmission fault lamp ON • Creeping function is disabled. • Reverse and manual mode is disabled Fault Effects (On Vehicle) • Critical malfunction. Power train is opened. Power loss immediately triggered- Gearshift is disabled • Transmission fault lamp ON • Creeping function is disabled. • Reverse and manual mode is disabled Lamp Status (If Any) Transmission fault lamp ON (Service indication 0x1) Fault Detection Condition if drum angle sensor at low end position is not in the range of [-4, 1]° Normal Operating Condition TCU does not detected any fault Probable Trouble Area 1. TCU. 2. BLDC motor. 3. Transmission. Healing Condition The reaction is cleared at SW restart Component Details: The BLDC motor is driving the shift “Drum” through a set of gears. By rotating the drum, the shift forks are synchronizing and engaging specific gearsets. BLDC controller supply voltage is regulated at 12V TCU. Connections are internal to TCU. Preliminary Checks: 1) Check for any visible damage BLDC controller to TCU. 2) Check correct fitment of ground cable connections on vehicle chassis. Trouble Shooting:- Step Checks IF YES IF NO 1. Clear the DTC and perform key cycle (=Low end homing will be performed during ignition on). Check if the DTC does not come back. Clear the DTC and check if the DTC does not come back. Go to step 2 2 If DTC persists, replace TCU (flash the adaption data from the original TCU), Clear the DTC and check if the DTC does not come back. Go to step 3 3 If DTC persists, place back the original TCU, and Replace the BLDC motor. Clear the DTC and check if the DTC does not come back. Go to step 4 4 If DTC persists, Replace transmission Clear the DTC and check if the DTC does not come back. • Resistance Check ➢ Disconnect Transmission side 28 pole connector X-201 and check below resistance at (X-201) connector terminal
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