NEXON DIAGNOSTIC MANUAL

OSPREY- Application

DTC Troubleshooting Data

Version: 4.0

Date: 10-02-2017

Prepared by: Mithipati Prasad

Checked by: G S Raju / Senthilnathan S

Page: 544 of 654

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 VGT Actuator connector is fitted

properly.

Go to Next Step

Fit the connector

properly

Is there any dirt or Rust on Connector

Remove the

connector and clean

it and refit it tightly

Go to Step 3

Perform the VGT actuator test. Is the test successful

Go to step 4

Some problem in

Wiring harness

connections. Rectify

the wiring

connections between

actuator and EMS

ecu.

Check the continuity between the EMS ECU pin 08 and

VGT connector pin 2. Check the continuity between the

VGT valve connector pin 1 and EMS main relay supply. Is

continuity test successful.

Go to step 5

Establish continuity

by rectifying wiring

harness connections

as per the schematic.

Is the VGT Valve connector pin 1 short circuited to

battery/Ground? Perform this test by keeping Ignition Off.

Go to Step 6

Rectify Wiring

Harness connections

as per the schematic

Check whether the VGT valve control pin 08 is Short

circuited to Ground

Rectify Wiring

Harness

connections as per

the schematic

Go to step 7

7. Is the resistance across the VGT valve terminals less than

1.4 ohms?

Go to Step 8

Rectify / Replace the

VGT valve.

Check whether any pins are backed out at ECU Connector

or VGT connector

Rectify / Replace the

connector

Go to Step 9

Is there any physical damage to VGT valve connector /

ECU Connector.

Replace the

respective

connectors

Go to step 10

10 If the fault still persists

Call Hotline

Repeat the 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.

Perform the actuator test for VGT valve. Test result should be successful.

Ensure that there are no faults logged by EMS before handing over the vehicle back to customer.