NEXON EV MAX SERVICE MANUAL - DTC

`63 Author: Navya Krishnan/Satyajit Copyright © TATA MOTORS Ltd. This document must not be used in anyway, such as copying and redistributing to third parties, without the consent of author. Kanger 2.0 DTC Troubleshooting Data Version: 1.0 Date: 15-Feb-2022 Pre-Check Points: a) Check for 3in1 10A fuse in fuse box. b) Check LV Battery voltage c) Check the DC output connector for damage d) Check LV Connector for damage (Pin n. 1&8) TroubleShooting:- Flow Diagram or table format for diagnosing the fault code Step no. Description Check Point if YES if NO 1 Remove the 12V LV battery negative terminal. After a minute connect the 12V LV battery negative terminal & "Ignition Switch" to ON position. Crank and wait for 2 minutes. Clear fault code and check again. Fault code P198F16 is PRESENT? Go to step 2 Repair complete. 2 Turn Ignition switch “OFF" and remove the LV battery negative terminal. Check the continuity between KL30 and 3in1 LV battery fuse. Is there proper continuity? Go to step 3 Make the connection proper and check this fault code again. 3 Check for the 3in1 LV battery fuse Is LV battery fuse(10A) blown? Replace the fuse and go to step 1 Go to step 4 4 Check for DCDC converter output under voltage and KL30 Check 3in1 DTC P19A106? Refer Trouble shooting code P19A106. Go to step 5 5 Remove the LV connector of 3in1 Check if there is continuity between 3in1 signal connector pin 1 (KL30) andLV battery positive as per below schematic. 3in1 signal connector pin 8 (KL31) and LV battery negative. Is there any terminals damage or LV harness damage? Replace the pins/ terminals or replace the LV harness and go to step 1 Go to step 6 6 Check for fault code again. Fault code P198F16 is present? Record the local snapshot of DTCs. Replace 3in1 combo unit. Repair completed DTC’s confirmation:- After rectification, ensure the following points by referring DCDC parameters using TML diagnostic tool before handing over to customer. a) DCDC converter charging LV battery in the range of 8V to 16V b) OBC charges HV battery

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