NEXON AMT BS VI DTC Troubleshooting Guide Version: 2.3 Date: 23-07-2019 Author: Rahul N Page: 417 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. 4) Loose/ Damaged virtual gas pedal sensor Connections. 5) Check for damage or back out of pins at EMS connector and TCU connector. 6) Check correct fitment of ground cable connections on vehicle chassis. Trouble Shooting:- Step Checks IF YES IF NO 1. Is there any rust/oxidation observed on EMS or TCU connectors? Clean the Rust or repair or replace Go to Step 2 2 Clear the DTC’s in EMS. Go to step3 Go to step3 3 Connect the TML diagnostic tool and check the value of virtual gas pedal position when cruise is active and enable, are correct values observed? Replace the TCU Go to Step 4 4 Fault Still Persists? Recheck the above steps Follow the steps again for reconfirmation 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. • After key and engine ON with TML TCU diagnostic tool connected, monitor the virtual gas pedal and confirm that it changes when the cruise enable and active . • Drive the vehicle with cruise active state • Ensure no DTC is active and Transmission Fault Lamp is OFF. Circuit Schematic Diagram: Component Location & Image:- NA Connector Location: TCU system connector (12 Pin) and TCU vehicle Connector (28 Pin) are in Engine compartment, near the AMT kit.
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