NEXON 3.0 EV DTC Troubleshooting Document for VCU Version: 2.0 Date: 22-Sep-2023 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. P3034 – 13: - E-Drive ignition activation line - circuit open Overview: ISO Code P3034- 13 Customer Symptom Vehicle is not drivable. HV Critical Alert Tell-tale is seen blinking on cluster. Charging will be disabled. Fault Effects (On Vehicle) The E-drive control unit does not receive LV supply. Vehicle will not be drivable. If vehicle is in running condition, it will go from Drive to Neutral. Air conditioning will be disabled. Vehicle may not crank in the next Ignition cycle if this error is in confirmed state. Lamp Status (If Any) HV critical lamp Blinking Fault Detection Condition Open circuit of Motor Control Unit Ignition Wake Up Normal Operating Condition Motor Control Unit receives LV supply when vehicle ignition is given Probable Trouble Area LV wiring Harness MCU LV connector VCU LV connector Healing Condition If DTC trigger condition is healed, DTC is present only in memory. Component Details: E drive MCU receives LV battery ignition signal from the VCU. Preliminary Checks: 1. Loose connection/pin backout of LV wiring harness between VCU and actuator MCU LV connector 2. Damage to LV wiring harness connections between VCU and actuator MCU LV connector Trouble Shooting: - 1. Remove the LV battery connections.
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