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: 60 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.

P068A-94: Battery disconnection

Overview:

DTC Description as per ISO standard

Battery disconnection – Unexpected operation

ECU Pin Number

K01,K03,K05

Customer Symptom

Fault Effects (On Vehicle)

Vehicle starting disabled

Lamp Status (If Any)

Fault Detection Condition (Root cause)

At ignition ON

Normal Operating Condition

No Fault Code

Probable Trouble Area

ECU power supply wiring

EMS ECU

Fault condition no more present

Component Details:

EMS ECU powered by battery supply and it function based only on battery supply. ECU provide the battery power to all

internal hardware components.

Preliminary Checks:

1. Check whether the customer voice / view about the issue is matching with the fault effects mentioned above. If

Yes, go ahead with next steps. If not, check for other DTC’s presence.

2. Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to

earlier issue closure.

3. Check for any other faults presence related to ECU Internal power supplies; Follow rectification process for those

faults, before proceeding further.

4. Check inlet air circuit for clogging; wrong assembly/fitment etc; Clean the inlet air circuit and remove any clogging.