HARRIER BOOK 2

Q501 4 Cylinder MT Application

DTC Troubleshooting Data

Version: 0.1

Date: 21-Sep-2018

Prepared By: Mithi Prasad, Sarang Kulkarni, Manish Gupta

Checked By: Yogesh Jadhav

Approved By: Satish Kumar P

Page: 910 of 1052

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.

Perform the Routine – Glow Plug Low Voltage test. Is the

result specifying any of the below errors:

- General electrical failure in glow plug 1

- General electrical failure in glow plug 2

- General electrical failure in glow plug 3

- General electrical failure in glow plug 4

- GCU in fault

- T30 missing

- General electrical failures in feedback line or open

circuit of command line or feedback signal not valid

- Short circuit to Vbatt in the command line

- Short circuit to Gnd of the command line

Perform the

rectification as per

the error returned by

EMS ECU for

routine.

Go to Next Step

Is there wiring harness electrical continuity between

Cylinder 4 glow plug & GPIU module connector pin G4 (in 4

pole connector), EMS pin K054 and GPIU Module

connector pin 2, GPIU Module connector pin 1 and Main

relay supply, GPIU Module connector pin 5 and Battery

supply.

Go to next step

Rectify the wiring

harness

connections as per

the circuit

schematic.

Check whether the GPIU module connector pin G4 (in 4

pole connector) is short-circuited to Battery / Ground.

Rectify the wiring

harness connections

as per the circuit

schematic.

Go to next step

Are there any pins damaged at EMS ECU Connector

Replace the

connector or wiring

harness

Go to Next Step

Are there any pins backed out from the EMS ECU

Connector

Rectify/Replace

Connectors

Go to Next Step

Fault Persists.

Call Hotline

Repeat the above

steps for re-

confirmation

DTC’s confirmation:

After rectification, Test Drive the vehicle for 2 KM and ensure that no DTC’s are logged in ECM.

Perform the ‘Glow Plug Low Voltage Test’ for GPIU Module by opening the Routines tab in Service tool. Test result shall

be successful.