Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1.0 Date: 30/11/2019 Author: ERC Page 585 of 610 Copyright by TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without our consent Check whether the customer voice / view about the issue is matching with the fault effects mentioned above. If yes, go ahead with next steps. If not, check for other DTC’s presence. Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to earlier issue closure. Check the connection of sensors powered by sensor supply Voltage 2. Follow sensor supply voltage2 check /rectification process. Check sensor connections for rust dirt etc; Follow rectification process of concerned sensor if faulty. Check ECU; Replace ECU, if problem still persists. Check with diagnostic tool if the sensor supply voltage lies in between 4.75 V to 5.35 V Trouble Shooting: Step Checks IF YES IF NO 1. Check whether the EMS ECU is receiving supply and Ground Go to step 2 Rectify wiring harness connections as per schematic 2. Check whether the battery is healthy Go to step 3 Repair Battery 3 Check sensor connections for rust dirt etc Go to step 4 Follow rectification process of concerned sensor if faulty. 4 Check whether the EMS ecu pins A56, A57, A58, A59, A35, A36 are short circuited to Ground. Or short circuited to Battery Or Open circuit Go to step 5 Follow rectification process of concerned sensor if faulty 5 Check with diagnostic tool if the sensor supply voltage lies in between 4.75 V to 5.35 V Go to step 6 Check battery voltage also check proper wiring harness 6 If fault still persists Call Hot Line Repeat above procedure for reconfirmation DTC’s confirmation (checks before handing over vehicle to customer): Check the errors at Ignition ON, engine running @ Idle & Fly-up with different vehicle speeds as well Circuit Schematic Diagram: A : Accelerator Pedal 2
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