Q501 4 Cylinder MT Application DTC Troubleshooting Data Version: 0.1 Date: 21-Sep-2018 Prepared By: Mithi Prasad, Sarang Kulkarni, Manish Gupta Checked By: Yogesh Jadhav Approved By: Satish Kumar P Page: 60 of 1052 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. P068A-94: Battery disconnection Overview: DTC Description as per ISO standard Battery disconnection – Unexpected operation ECU Pin Number K01,K03,K05 Customer Symptom - Fault Effects (On Vehicle) Vehicle starting disabled Lamp Status (If Any) - Fault Detection Condition (Root cause) At ignition ON Normal Operating Condition No Fault Code Probable Trouble Area ECU power supply wiring EMS ECU Fault condition no more present Fault condition no more present Component Details: EMS ECU powered by battery supply and it function based only on battery supply. ECU provide the battery power to all internal hardware components. Preliminary Checks: 1. 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. 2. Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to earlier issue closure. 3. Check for any other faults presence related to ECU Internal power supplies; Follow rectification process for those faults, before proceeding further. 4. Check inlet air circuit for clogging; wrong assembly/fitment etc; Clean the inlet air circuit and remove any clogging.
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