Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 715 of 834 Copyright by TATA MOTORS Ltd. This document must not be used in any w ay, such as copying and redistributing to third parties, w ithout our consent P3011-00: Reading of variant coding failed after attempts – General electric Failure Overview: DTC Code P3011-00 DTC Description As per ISO Standard Reading of Variant Coding Failed after attempts Customer Symptom Vehicle will not function as per design intent. Fault Effects (On Vehicle) Vehicle will not function as per design intent. Lamp Status (If Any) NA Fault Detection Condition This fault gets logged when the Variant Coding activity is failed at EOL station due to incorrect writing of variant code. Normal Operating Condition Variant Coding activity will be successful at TML EOL Probable Trouble Area Manual error in entering variant code, EOL tool faulty, EMS ECU Component Details: NA Preliminary Checks: 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 whether Variant code is written as per the Specification provided to EOL team. Trouble Shooting: Step Checks IF YES IF NO 1. Is variant code being written into EMS ECU is aligned to the Vehicle variant? Go to step 2 Write the variant code for the Vehicle variant correctly. 2. Check whether the EOL tool is sending the information properly to EMS ECU? Go to Step 3 Replace EOL tool 3 If the fault still persists? Replace EMS ECU Repeat the above procedure for fault confirmation DTC’s confirmation: After rectification, ensure the following points by referring engine parameters using TML diagnostic tool before handing over to customer. Clear the DTC, Turn OFF the ignition and then turn it ON. Read the DTC’s. Ensure that fault shall not reappeared. Circuit Schematic Diagram:
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