NEXON DIAGNOSTIC MANUAL

Nexon Gasoline – EMS ECU Bosch

DTC Troubleshooting Manual

Version: 0.1

Date: 26-08-2017

Prepared By: Sunu S Babu/Yogesh Jadhav

Checked By: Yeshwant Jadhav

Approved By: Satish Kumar

Document Part No: 2921 02 224 A1736

Page: 1047 of 1203

TATA MOTORS Ltd.

This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author.

Trouble Shooting:-

Step

Checks

IF YES

IF NO

Check whether the EMS ECU is receiving supply and

Ground

Go to step 2

Rectify wiring

harness

connections as

per schematic

Check whether the battery is healthy

Go to step 3

Repair Battery

If fault still persists

Replace EMS ECU

Repeat above

procedure for

reconfirmation

DTC’s confirmation:-

After rectification, ensure the following points by referring engine parameters using TML diagnostic tool before

handing over to customer.

Replace EMS ECU and check whether the fault is rectified or not.