Q501 4 Cylinder MT Application DTC Troubleshooting Data Version: 0.1 Date: 21-Sep-2018 Prepared By: Mithi Prasad, Sarang Kulkarni, Manish Gupta Checked By: Yogesh Jadhav Approved By: Satish Kumar P Page: 1004 of 1052 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. P3023 - 29: Airbag invalid crash information Overview: DTC Description as per ISO standard Airbag invalid crash information ECU Pin Number - Customer Symptom Fuel cut off. Engine shut down Fault Effects (On Vehicle) Fuel cut off. Engine shut down Lamp Status (If Any) CE lamp is ON Fault Detection Condition (Root cause) This fault takes place if the vehicle crashed detected by the ECU due to any of the following reasons 1: Front deploy crash 2: Rear crash 3: Crash impact due to non-fire event 4: LHS crash 5: RHS crash 6: Airbag invalid crash information Normal Operating Condition No vehicle crash event detected by Airbag ECU Probable Trouble Area SRS module( Airbag ) Healing Condition Immediate after replacing airbag. Component Details: SRS / Air bag ECU detects various types of crash events using sensors like Front deploy crash, rear crash, crash impact due to non-fire event, LHS crash and RHS crash. Once the SRS / Airbag ECU detects crash, it sends a CAN signal to EMS indicating Crash. Then EMS ECU will perform the safety fuel cut off function. Preliminary Checks: • Check whether the customer voice / view about the issue is matching with the fault effects mentioned above. If yes,go ahead with next steps. If not, check for other DTC’s presence. • Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to earlier issue closure. Trouble Shooting: Step Checks IF YES IF NO 1. Ensure that the repairs are performed - - 2. Check whether the Airbag ECU is sending CAN signal indicating No crash detected. Confirm Fault Rectification Replace Airbag ECU / Relevant sensors 3. If fault still persists Replace EMS ecu Repeat above procedure for reconfirmation DTC’s confirmation:
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