NEXON DIAGNOSTIC MANUAL

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: 143 of 549

DTC’s confirmation:-

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

Clear the DTC’s & make sure no DTC’s are present for Airba

g system

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:-

Fig138: Frontal Impact Passsenger sensor is usually located in the radiator support vertical member.

12 V

Battery

A23

CAN H

Ignition Sw itch

CAN L

A12

RESTRAINTS

CONTROL

MODULE

Passenger

Front

Impact

Sensor

Fuse 10A

PFIS -

PFIS+

Vbat