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Nexon Gasoline – EMS ECU Bosch
DTC Troubleshooting Manual
Version: 0.1
Date: 26-08-2017
Prepared By: Sunu S Babu/Yogesh Jadhav
Checked By: Yeshwant Jadhav
Approved By: Satish Kumar
Document Part No: 2921 02 224 A1736
Page: 1133 of 1203
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.