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. P3018 – 84: - Charging- Vehicle Inlet PP Signal - signal below allowable range Overview: ISO Code P3018 - 84 Customer Symptom Vehicle would not go into charging mode Fault Effects (On Vehicle) The vehicle is drivable but charging will not happen Lamp Status (If Any) Charging fault indication lamp is Blinking on the cluster Fault Detection Condition Charging session stopped, Since PP signal detected Error Normal Operating Condition Charging will happen Probable Trouble Area A96-PP signal short to ground/Open PP line connection wiring Healing Condition If DTC trigger condition is healed, DTC is present only in memory Component Details: PP signal is used for successful gun detection. Preliminary Checks: NA Trouble Shooting: - 1. Remove the LV battery connections. Ste p No. Description Check point If Yes If No 1. Check for continuity between Vehicle Charging gun inlet and EVCU Check for continuity between Vehicle charging gun inlet PP pin C448A-5 and EVCU PP pin C776B96 Problem is in EVCU. Action: Replace EVCU and try Fast Charging Problem is in wiring harness between Vehicle Charging gun inlet and EVCU Action: Repair harness DTC’s confirmation: - After rectification, read DTC using TML diagnostic tool and Clear the DTC Ensure no DTC is in defect/confirmed state before handing over to customer Circuit Schematic Diagram:
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