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: 322 of 549

B0073-55:- Second Row Left Seatbelt Pre tensioner Deployment Control not configured

Overview:-

ISO Code

B007355

Customer Symptom

SRS Warning Lamp continuously ON in Instrument Cluster

Fault Effects (On Vehicle)

No Effect

Lamp Status (If Any)

SRS Warning Lamp continuously ON in Instrument Cluster

Fault Detection Condition

Second Row Left Seatbelt Pre tensioner Deployment Device is

not configured in EOL, but physically present in the vehicle

Normal Operating Condition

Second Row Left Seatbelt Pre tensioner configuration &

physical presence in the vehicle should be as per the VC.

Probable Trouble Area

Related wiring Harness, connector or terminals

Second Row Left Seatbelt Pre tensioner Device

System Configuration

Airbag ECU

Healing Condition

1. Correct System configuration should be written to

Airbag ECU as per VC.

2. Second Row Left Seatbelt Pre tensioner physical

presence should be as per VC.

Component Details:-

Second Row Left Seatbelt Pre tensioner Module

: - It is located at the rear passenger door wheel arch inner panel.

Airbag ECU

: - It is fitted in the floor of central console in the car. The Airbag Electronic Control Unit (ECU) controls

the deployment system to allow an appropriate igniting of the Airbags and belt pre-tensioners to restrain the Driver

and passengers.

Preliminary Checks:-

1. Check Battery Voltage (12 V & above)

2. Check for any faults in Airbag Warning Lamp indication in Instrument Cluster.

3. Ensure the proper locking of Airbag ECU wiring harness connectors in the vehicle by the locking sound.

Trouble Shooting:-