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: 416 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 a

re present for Airbag system

Check whether any new DTC’s are getting qualified for repeated cranking.

k) Ensure the Airbag Warning Lamp Indication is continuously ON in Instrument Cluster for

4 seconds

after

Ignition ON

l) Ensure the Airbag Warning Lamp Indication goes OFF after

4 seconds

from Ignition ON.

IS DTC

PRESENT?

CLEAR DTC. TURN OFF & ON IGNITION.

IS DTC STILL

PRESENT

CHECK WHETHER THE PSP

SENSOR

CONNECTED TOTHE WIRING HARNESS IS

HAVING THE TML PART NUMBER

542754209910

IS PART

NUMBER

CORRECT ?

REPLACE WITH

THE CORRECT

PSP

YES

TURN OFF &

ON IGNITION.

CLEAR DTC &

CHECK FOR

DTC’s

IS DTC

PRESENT?

CLEAR DTC’s. TURN OFF & ON IGNITION &

CHECK FOR DTC’s

STOP

RE-CONNECT

THE ECU,

PSP

W/H MODULE IN

THE VEHICLE

YES

REPLACE THE

AIRBAG ECU

WITH A NEW ONE

YES

IS DTC STILL

PRESENT?

START

TURN ON IGNITION. CONNECT THE

DIAGNOSTIC TOOL AND CHECK FOR DTC’s

B100D-4A