HARRIER BOOK 2

TATA MOTORS Ltd.

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SRS / Airbag

ECU – DTC Troubleshooting Guide

Version: 14.0

Date: 14-February-2017

Prepared by:Airbag COC Review &

Approved by:Sanjeev VM

Page: 247 of 549

DTC’s confirmation:-

After rectification, ensure the following points using TML diagnostic tool before handing over to customer.

a) Clear the DTC’s & make sure no DTC’s are present for Airbag system

b) Check whether any new DTC’s are getting qualified for repeated cranking.

c) Ensure the Airbag Warning Lamp Indication is continuously ON in Instrument Cluster for

4 seconds

after

Ignition ON

d) Ensure the Airbag Warning Lamp Indication goes OFF after

4 seconds

from Ignition ON.

Circuit Schematic Diagram:-

Schematic shown below for illustration

Battery>>>>>Fuse>>>>Relay>>>>>>>Sensor/Actuator>>>>>ECU

Component Location & Image:-

Passenger Airbag Deactivation switch (PADS) is provided on the left side of the dash board.

Fig226:- Passenger Airbag Deactivation switch (PADS)