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. P3089 - 68: - VECU EEPROM write successful for Crash Detection - event information ISO Code P3089 - 68 Customer Symptom Vehicle is not drivable as crash detected Fault Effects (On Vehicle) Vehicle is not drivable Lamp Status (If Any) NA Fault Detection Condition Crash signal received from SRS ECU to VECU over CAN Normal Operating Condition No crash signal received from SRS ECU to VECU over CAN Probable Trouble Area NA Healing Condition If DTC trigger condition is healed, DTC is present only in memory DTC will be in present in confirmed state until it is being erased by tester tool using DID Name – crash detect status Component Details: Crash signal received from SRS ECU to VECU over CAN. Preliminary Checks: DID No Vehicle Parameter Name Expected Value 3489 crash detect status 1 - crash detected Trouble Shooting: - This DTC signifies crash signal is detected by SRS and received by VECU over CAN and successfully written in VECU memory. Then DTC is logged in VECU. DTC’s confirmation: - After rectification, ensure that DTC is not present in VECU memory using TML diagnostic tool before handing over to customer by writing the below parameter as 0 using the service tool. DID No Vehicle Parameter Name Expected Value 3489 crash detect status 0 - Crash Not detected Circuit Schematic Diagram: NA Component Location & Image: - NA
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