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: 535 of 549

B100D-2B:- Passenger Side Peripheral sensor cross coupled

Overview:-

ISO Code

B100D-2B

Customer Symptom

SRS Warning Lamp continuously ON in Instrument Cluster.

Fault Effects (On Vehicle)

Passenger side Crash detection performance is degraded &

Passenger Side angular crash detection is not guaranteed.

Lamp Status (If Any)

SRS Warning Lamp continuously ON in Instrument Cluster.

Fault Detection Condition

This fault gets logged if the signal of Passenger side Peripheral

Sensor gets cross coupled with any other sensor terminal during

Power ON.

Normal Operating Condition

No cross coupling should be present.

Probable Trouble Area

Related wiring Harness, connector or terminals

Passenger side Peripheral sensor

Airbag ECU

Airbag Wiring Harness

Healing Condition

Cross coupling should be removed & Ignition should be turned

OFF & ON.

Component Details:-

Passenger Side peripheral Sensor

: - These sensors are mounted on left side “B” pillar at the bottom end.

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:-