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: 117 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 ar

e present for Airbag 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.

TURN ON IGNITION.

CONNECT THE

DIAGNOSTIC TOOL AND CHECK FOR DTC’s

IS DTC

PRESENT?

CLEAR DTC

IS DTC STILL

PRESENT

TURN OFF IGN, REMOVE DRIVER FIS

SENSOR

CONNECTOR FROM VEHICLE W/H.

TURN ON IGNITION. CLEAR DTC’s & CHECK

FOR DTC’s.

IS DTC B100E-

12 PRESENT?

REPLACE

THE

DRIVER

FIS

YES

TURN OFF

& ON THE

IGNITION &

CHECK FOR

DTC’s

IS DTC

PRESENT?

CHECK WHETHER

THE VOLTAGEAT

OUTPUT PINS OF W/H C209-1 & C209-2

W.R.T VEHICLE GROUND

IS IN THE RANGE

OF 10 TO12 V

STOP

RE-CONNECT

THE ECU,

SENSOR

& W/H

MODULE IN

THE VEHICLE

YES

REPLACE THE

DRIVER FIS

SENSOR

IS VOLTAGE IS

IN 10 T0 12 V?

REPLACE AIRBAG ECU

WITH A NEW ONE.

YES

TURN OFF IGN. REPLACE AIRBAG W/H.

CONNECT THE AIRBAG

ECU, W/H & DRIVER

FIS IN VEHICLE.

3. TURN ON IGNITION. CLEAR DTC’s & CHECK

FOR DTC’s.

IS DTC B100E-

12 PRESENT?

START

B100E12::

Frontal Impact

Driver Sensor

circuit short to

battery

OUTPUT

PINS OF W/H C209B-1& 209B-2W.R.T VEHICLE

GROUND IS IN THE RANGE 10 O 12V.