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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.
Restraints Control Module (SRS / Airbag) -ECU Replacement Procedure
Version: 4.0
Date: 29-10--2016
Author: Airbag CoC, ERC
Page: 3 of 7
h. Select the correct CAN Node Configuration ($2E 4019 DATA) as per the VC number
(Please refer to Parameterization number
in Look up table or as per R16 server
).
i. Select the correct Passenger SBR Switch & Chime ($2E 401A DATA) as per the VC
number (Please refer to Parameterization number
in Look up table or as per R16
server
).
j.
Please give ECU soft reset (11 01),
instead of taking out ignition key from vehicle.
k. Clear DTC’s & check for DTC’s
l. Go to extended session (10 03) & Get security access for the Airbag ECU with the dll
(using production key in build in service tool).
m. Unlock ECU (Enable Firing) using $2E 40 13 service
n. Turn OFF and ON ignition. (Take out the vehicle key to ensure proper power latch).
o. Clear DTC’s and check for DTC’s.
p. Check the Warning Lamp in Instrument Cluster. (
After prove out SRS warning lamp
should be off in Instrument Cluster, if no faults are qualified in SRS ECU
)
q. Read ECU data after successful writing and compare it with PLM server data for the
respective VC:
1. VIN (Vehicle Identification) number ($22 F1 90)
2. ECU installation date ($22 F1 9D)
3. ECU assembly number ($22 72 34)
4. ECU parameterization number ($22 72 44)
5. System Configuration ($22 40 10)