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. P3026 - 12: - Battery cooling chiller solenoid valve activation line - circuit short to battery Overview: ISO Code P3026 - 12 Customer Symptom Service Indicator Lamp is ON Fault Effects (On Vehicle) Battery cooling solenoid valve will not open leading to battery cooling system not to function. Chances of HV battery getting over heat. amp Status (If Any) Service Indicator Lamp is ON If temperature of battery is reached above operable threshold, battery over-heat tell-tale is seen on cluster. Fault Detection Condition Short circuit of Battery cooling solenoid valve activation line to Battery Normal Operating Condition Solenoid valve will open and close depending on the input received from the VCU Probable Trouble Area LV wiring harness Solenoid valve LV connection Powertrain VCU connector Healing Condition If DTC trigger condition is healed, DTC is present only in memory. Component Details: Battery cooling chiller solenoid valve receives electrical input from VCU for opening and closing of solenoid valve. Preliminary Checks: Loose connection of LV wiring harness between VCU and actuator Damage to LV wiring harness connections between VCU and actuator Trouble Shooting: - 1. Remove the LV battery connections.
RkJQdWJsaXNoZXIy MTIwNTUz