NEXON 2.0 EV DTC Troubleshooting Document for VCU Version: 1.0 draft Date: 31-Jan-2022 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. P3037 - 11: - E-Drive power supply relay activation line - circuit short to ground Overview: ISO Code P3037 - 11 Customer Symptom HV Critical Alert Tell-tale is glowing on the cluster Fault Effects (On Vehicle) The vehicle is drivable as per driver inputs. No effect on vehicle drive ability. E-drive will always receive LV supply Lamp Status (If Any) HV critical lamp ON on cluster Fault Detection Condition E-drive power supply relay will not operate depending on the input received from the VCU Normal Operating Condition E drive power supply relay will operate depending on the input received from the VCU Probable Trouble Area LV wiring harness E drive power supply relay Powertrain VCU connector Healing Condition If DTC trigger condition is healed, DTC is present only in memory. However, cluster indication will be ON till one drive cycle of vehicle, until DTC is cleared using tester tool. Component Details: E drive Relay receives input from the VCU to enable or disable the E drive. Preliminary Checks: Check voltage at the terminals of relay. Check wiring connections E drive Relay. Check the connectors between VCU and E drive relay Trouble Shooting: - 1. Remove the LV battery connections. Step No. Description Check point If Yes If No
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