TIAGO TIGOR BSVI - SERVICE MANUAL - DTC 24-12-2021

TATA BSVI Gasoline Program – EMS ECU Bosch DTC Troubleshooting Service Manual Version: 1.2 Date: 18-12-2019 Prepared By: Sunita Mandlik Checked By: Yeshwant Jadhav Approved By: Satish Kumar Document Part No: 2921 02 xxx xxxx Page: 1048 of 1498 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. P3025-68: Crash Information Sent from Air Bag ECU, Safety action took by Switching Off Fuel Pump– Event Information Overview: ISO Code P3025-68 Customer Symptom Fuel Cut off. Engine Shut Down Fault Effects (On Vehicle) Fuel Cut off. Engine Shut Down Lamp Status (If Any) CE Lamp ON after 1 drive cycle Fault Detection Condition This fault takes placeif 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 Normal Operating Condition Vehicle crash should not happen. Vehicle should start Probable Trouble Area SRS Module (Airbag) Healing Condition After 3 Drive cycles Fault permanent deletion 1. Clear DTC Command form Scan tool 2. Stack Over Flow. 3. 40 warm up cycles. 4. ECU flashing 5. ECU Power-Fail 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: 1. 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. 2. Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to earlier issue closure.