4625 / 5157
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.
Tata Bolt / Zest / Tiago/ Tigor – 4 Loop – Restraints Control Module (SRS / Airbag)
ECU Replacement Procedure
Version: 3.1
Date: 24-Feb-2017
Author: Airbag CoC, ERC
Page: 4 of 6
4.
Read ECU Parameterization number using service tool ($22 72 44) and compare with Look up
table/PLM server (or with old ECU) as per defined VC. It should match with the existing ECU
data.
5.
If both the Assembly number & Parameterization number matches then only ECU replacement
will be allowed, otherwise not.
6.
Vehicle should not be allowed outside the Service station with the Cannibalized ECU from
another vehicle.
ECU needs to be replaced in service, if SRS (Airbag) ECU logs any of the below
DTC’s
:
1.
If following DTCs are present, then follow the below steps for its rectification: -
a.
U1006 – 43 - Control Module Internal special memory failure (follow the below process)
i.
Clear DTC. Turn OFF & ON Ignition & Check for DTC’s (at least 2 to 3 times).
ii.
If DTC is still present, replace the Airbag ECU (
as per ECU replacement
procedure
).
iii.
Send the old ECU to TML QA team for analysis.
b.
U1006 – 49 - Control Module Internal electronic failure (follow the below process)
i.
Clear DTC. Turn OFF & ON Ignition & Check for DTC’s (at least 2 to 3 times).
ii.
If DTC is still present, replace the Airbag ECU (
as per ECU replacement
procedure
).
iii.
Send the old ECU to TML QA team for analysis.