HARRIER BOOK 2

TATA MOTORS Ltd.

This document must not be used in any w ay, such as copying and redistributing to third parties, w ithout the consent of author.

SRS / Airbag

ECU – DTC Troubleshooting Guide

Version: 14.0

Date: 14-February-2017

Prepared by:Airbag COC Review &

Approved by:Sanjeev VM

Page: 90 of 549

DTC’s confirmation:-

After rectification, ensure the following points by referring engine parameters 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:-

Fig85: Passenger Seatbelt Pretensioner is located in the B-pillar and is connected with the seat belt buckle assembly

Connector Location:-

Battery

A23

CAN H

Ignition Sw itch

CAN L

A12

RESTRAINTS

CONTROL

MODULE

Belt

Tensioner

Front

Passenger

Fuse 10A

A21

A22

BTFP+

BTFP-

Vbat