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: 140 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.

P244B-15: Diesel Particulate Filter delta pressure sensor (circuit short to battery or open)

Overview:

DTC Description as per ISO standard

Diesel Particulate Filter delta pressure sensor (circuit short to

battery or open)

ECU Pin Number

K15, K16, K42

Customer Symptom

MIL ON.

Fault Effects (On Vehicle)

Cruise control off

Lamp Status (If Any)

MIL ON

Fault Detection Condition (Root cause)

Ignition ON engine ON

Normal Operating Condition

Fault condition no more present.

Probable Trouble Area

Issue in electrical differential pressure sensor wiring harness

Differential pressure sensor failure.

EMS ECU.

Healing Condition

Rectify the error

Clear through diagnostic tool

Ignition OFF & ON

Component Details:

The Differential Pressure Sensor for DPF function is to measure the pressure drop across the Diesel Particulate Filter

system and send to ECU an output signal of the differential pressure drop.

The sensor shall be mounted on engine or chassis, and receives its pressure input from two direct ports attached to the

pressure sources across the DPF. In order to operate in severe air pressure conditions (presence of soot or condensate

contamination), sensor element must have an high degree of robustness against chemical corrosion.

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 whether the EMS is receiving Battery supply and Ground.

4. Check whether the Battery is healthy.

5. Check air and fuel system.

6. DPF filter clogged.

7. Exhaust differential pressure sensor connection.

8. DPF sensor connection.