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: 99 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.

U0423-81: Invalid Data Received From Instrument Panel Cluster Control Module : IPC Node Invalid data faulty

Overview:

DTC Description (User Friendly)

Invalid Data Received From Instrument Panel Cluster Control

Module : IPC Node Invalid data 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

RPM indication will be disabled. MIL OFF, CEL ON

Fault Effects (On Vehicle)

ECU will go into the default mode.

Lamp Status (If Any)

Check engine lamp will be ON.

Fault Detection Condition (Root cause)

1. IPC connector is not connected properly or

disconnected from its location.

2. CAN wire from IPC connector side is

disconnected

3. IPC is not powered up.

4. CAN_H, CAN_L or/ and both lines of IPC are

Opened.

Normal Operating Condition

ECM ECU communicates properly with IPC ECU.

Probable Trouble Area

1. Disconnection of the IPC connector

2. CAN_H and CAN_L lines at IPC connector end.

Healing Condition

1. To fix the IPC connector correctly and Fix the

wiring harness issues from IPC side.

2. CAN_H, CAN_L or/ and both lines of IPC are

connected properly to the IPC connector.

Component Details:

ECM ECU communicates properly with IPC ECU in the CAN network.

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 / IPC ECU Connector.

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

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

Trouble Shooting: