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: 80 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.

U0138-31: Lost Communication With All Terrain Control Module: Drive Control Switch / DCS Node Tout Faulty

Overview:

DTC Description (User Friendly)

Lost Communication With All Terrain Control Module: Drive

Control Switch / DCS Node Tout Faulty

ECU Pin Number

K013 – CAN_H

K014 – CAN_L

A075 – Ignition

K001, K003, K005 – Supply voltage battery

K002, K004, K006 - Ground voltage battery

Customer Symptom

MIL OFF, CEL ON.

Fault Effects (On Vehicle)

ECU will go into the default mode.

Lamp Status (If Any)

CEL ON. CEL Turns Off as and when fault condition is not

present / healed.

Fault Detection Condition (Root cause)

Any of the the selected frames from DCS node is timed out.

Normal Operating Condition

ECM ECU communicates properly.

Probable Trouble Area

Connection between EMS ECU and DCS Connector

Healing Condition

fix the dcs connector correctly

Component Details:

DCS controls the working of Drive control mode switch.

Preliminary Checks:

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

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

2. Check whether other customers report similar complaints earlier. If yes, perform the preliminary checks with

respect to earlier issue closure.

3. Check for Damage in EMS ECU connector / DCS Connector.

4. Check for any back out of pins at EMS ECU connector / DCS Connector.

5. Check for any damage of pins at EMS ECU connector / DCS Connector.

Trouble Shooting: