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OSPREY- Application
DTC Troubleshooting Data
Version: 4.0
Date: 10-02-2017
Prepared by: Mithipati Prasad
Checked by: G S Raju / Senthilnathan S
Page: 633 of 654
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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.
P3021: SRS1 crash detected on CAN
Overview:
ISO Code
P3021
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
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
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:
x
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.
x
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